when the geologic time scale was being developed, which method of assigning ages to rock units was used first - relative dating or absolute dating?

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Answer 1

a) Relative dating was used first when the geologic time scale was being developed.

Relative dating is the process of determining the age of a rock unit in relation to other rock units. This method was used first when the geologic time scale was being developed because it does not require knowledge of the absolute age of a rock unit.

Instead, it relies on the principle of superposition, which states that in a sequence of undisturbed layers, the oldest layer is at the bottom and the youngest layer is at the top.

This method also uses other techniques such as stratigraphy, biostratigraphy, and cross-cutting relationships to determine the relative ages of rock units.

Absolute dating, on the other hand, requires knowledge of the absolute age of a rock unit, typically through the use of radiometric dating techniques. This method was not used until later on in the development of the geologic time scale as it requires more advanced technology and an understanding of geology.

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Related Questions

Within the range of latitudes in the Northern Hemisphere is 24 hours of daylight experienced?

Answers

No, within the range of latitudes in the Northern Hemisphere, 24 hours of daylight is not experienced.

This phenomenon, known as the "midnight sun," only occurs in the Arctic Circle, which is located in the Northern Hemisphere but is not within the range of latitudes typically considered to be part of the Northern Hemisphere.

The Arctic Circle is located at a latitude of 66.5 degrees north, which is beyond the range of latitudes typically considered to be part of the Northern Hemisphere (0 to 60 degrees north).

It passes through several countries, including Norway, Sweden, Finland, Russia, the United States (Alaska), Canada, Denmark (Greenland), and Iceland.

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18.Explain how temperature, silica content, viscosity, and gas content determine the type of volcanic products (ex. lavas vs. pyroclastic material) produced during an eruption and, in turn, how they dictate the type of volcanic landforms created.

Answers

Temperature, silica content, viscosity, and gas content are all factors that influence the type of volcanic products produced during an eruption.

Higher temperatures result in more fluid lava, while cooler temperatures result in more viscous lava that may produce pyroclastic materials. High silica content in magma increases viscosity, resulting in explosive eruptions that produce pyroclastic material. Lower silica content results in less viscous lava that flows easily, producing lavas. The gas content of magma also plays a role, as high gas content increases the explosivity of an eruption.

These factors determine the type of volcanic landforms created, with fluid lavas creating shield volcanoes and more viscous lavas producing stratovolcanoes. Pyroclastic material from explosive eruptions can result in cinder cones and calderas.

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ACTIVITY 3 SUBSTITUE ME Directions: Ask the help of your elders and parents to write the possible substitute for the following given cleaning agents. _____________1. A substitute for acid cleaner in removing stains in bed sheets. _____________2. A replacement of detergent powder in cleaning floors and walls. _____________3. It can safely whiten the surfaces of tiles without skin irritations. _____________4. This can eliminate bad smell in the refrigerator. _____________5. This can be an alternative of abrasive cleaner to shine the windows.​

Answers

Answer:

Explanation:

It is too hard for a middle school kid to answer

Explain how waves erode, transport & deposit material

Answers

Answer:

Longshore drift happens when waves approach the beach at an angle. The swash (waves moving up the beach) carries material up and along the beach. Longshore drift provides a link between erosion and deposition. Material in one place is eroded, transported then deposited elsewhere.

Explanation:

Answer: The energy in waves can break apart rocks. Over time waves make small cracks bigger. ... Waves can also erode rock by abrasion. As a wave comes to shallow water it picks up sediment.  

A wave transports its energy without transporting matter. Waves are seen to move through an ocean or lake; yet the water always returns to its rest position. Energy is transported through the medium, yet the water molecules are not transported.

The waves push material at an angle up the beach via the swash and it is then deposited on the beach. The backwash will then collect the material and pull it down the beach in a vertical direction back out to sea. Another wave will then collect that material and carry it obliquely towards shore again.

hope it helps...

Explanation:

The continental climates from the continental air masses mean that the East Coasts of continents in the mid-latitudes have __________ summers.

Answers

The continental climates from the continental air masses mean that the East Coasts of continents in the mid-latitudes have dry summers

What is a climate?

It should be noted that a climate simply means the atmospheric condition of a place for a period of time.

In this case, the continental climates from the continental air masses mean that the East Coasts of continents in the mid-latitudes have dry summers

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Answer:

dry

Explanation:

bcuz east coat for life babyy

is the ocean considered a dessert?​

Answers

Answer:

No the ocean is not considered the dessert.

Explanation:

Answer:

no

Explanation: a desert is something you get at the cheese cake factory

A playa is a(n) __________. a. natural lake that is dry for long periods of time b. underground water reserve c. man-made freshwater reservoir d. navigable river waterway please select the best answer from the choices provided. a b c d

Answers

The correct option is a. natural lake that is dry for long periods of time.

What is playa?

Playas are flat-bottomed depressions that are sometimes surrounded by water which it slowly seeps into the groundwater system or vaporizes into the atmosphere. As a result, salt, sand, and mud are deposited along the depression's bottom and around its edges.

Some key feature of playa are-

Playas are also known as pans, flats, or dry lakes. They are typically found in inner desert watersheds and close to coasts in arid and semi-arid regions.The flattest recorded landforms are playas. Typically, their gradients are less than 0.2 meters per kilometer. Many kilometers of surface may be submerged when only a few centimeters of water are added. The nearly flawless flatness that is so distinctive of these dry region landforms is developed and maintained by the process of flooding.The middle, level basins of arid plains are called playas. They need drainage from the inside to a place where evaporation far outweighs intake. A playa lake arises when the area is inundated, concentrating salts and fine-grained debris. Playa terminology is somewhat confusing due to the abundance of regional names.

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Answer:

a

Explanation:

Which of the following is considered to have a confederation system of governance?

Answers

Answer:

Switzerland is a modern example of a confederation. The Constitution established a system that is a combination of both unitary and confederate systems.

Explanation:

Which excerpt from "The Beginnings of the Maasai” is the best example of a feature found in myths?
My job is important, so I work hard to do it well, even though the cattle can sometimes be troublesome.
You see, soon after I was born, a massive volcano erupted right in the middle of the cattle plains.
When we have rituals or community celebrations, I have to bring the cattle, because their presence is essential.
One by one, Enkai sent the cattle walking down branches of the fig tree, all the way down to the roots at the ground.

Answers

Answer: One by one, Enkai sent the cattle walking down branches of the fig tree, all the way down to the roots at the ground.

I need help asapppp 30 points for the right answer

I need help asapppp 30 points for the right answer

Answers

Answer:

It could be business

Explanation:

Well if you think about it, band won't help him with farming and i don't think history would either. Physics is basically physical science, so I don't think that's it either. I hope this helps. God bless!

Which air mass or masses allow for sleet and freezing rain to develop in our area?

Answers

The air mass or the masses that allow for sleet and the freezing rain to develop in our area is mP and mT.

The different types of the air masses are as : the Maritime Tropical that is mT air masses are the warm, the humid air masses that is originating from the oceans of the tropics. The other is the Maritime Polar that mP air masses are the cold, the humid air masses that is originating from the oceans for the polar latitudes.

The  sleet are the partly melted falling snow or the hail that is the  partly frozen rain.

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(55p earth science) there wasnt an option for earth science so i put it under this.

Describe patterns you see in the precipitation on Earth. How do these patterns change during the course of a year and from year to year? Use lines of latitude and the amount of precipitation in millimeters/day (mm/day) in your description.

What causes the variations in Earth’s precipitation during the course of a year or from year to year at a given location?

EDMENTUM ANSWERS

Answers

The patterns I see in the precipitation on Earth are:

The equatorial zone and Southeast Asia's monsoon region are home to the areas with the most precipitation. Little rain falls in the desert areas of the subtropics and around the poles, while substantial amounts fall in the middle latitudes.

Global warming is one of the main causes of the variations in Earth’s precipitation during the course of a year.

What is the Earth's surface temperature about?

The temperature of the surface of the Earth, or the global surface temperature, has been rising steadily, beating the previous record for the warmest day every year.

The angle of the sun, the distance from the sun, the location's latitude, proximity to the sea, elevation, ocean currents, and lastly some other local factors all affect the temperature of the Earth's surface at any given time.

Due to positive feedbacks from the ice retreat, high latitude regions (beyond the Tropic of Cancer and Tropic of Capricorn) warm more quickly than typical.

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¿Por qué es importante la red geográfica?

Answers

Answer:

Por qué sirven para ubicarse en la superficie terrestre. Es fundamental para la elaboración de mapas y es la base del GPS.

Explanation:

espero haber ayudado

La red geográfica es la red terrestre de líneas imaginarias que sirve para localizar cualquier punto sobre la superficie terrestre mediante dos coordenadas, la Latitud y la Longitud. ... - Los meridianos sirven para obtener la coordenada relativa a la longitud (Este u Oeste).

Select a United States National Park with: (a) sedimentary rocks, (b) metamorphic rocks, and (c) a history of flooding - it must have all three. Use only this park for the entire exam. (State Parks, or Parks from other countries will receive a zero on entire exam.) Provide the Name of the Park, and a description of its regional geography,

Answers

Grand Canyon National Park, which is located in Arizona, fulfills all the criteria of having sedimentary rocks, metamorphic rocks, and a history of flooding.

Grand Canyon National Park is located in northwestern Arizona and encompasses the stunning Grand Canyon, which is one of the most iconic natural landmarks in the world.

The park is situated in the Colorado Plateau region and is characterized by its vast canyons, towering cliffs, and intricate rock formations.

The Grand Canyon is predominantly composed of sedimentary rocks that provide a remarkable record of Earth's geological history.

Metamorphic rocks in the Grand Canyon are primarily found in the Inner Gorge and are the result of intense heat and pressure that caused the transformation of pre-existing rocks.

The Grand Canyon has a long history of flooding due to the presence of the Colorado River, which has carved out the magnificent canyon over millions of years.

Thus, Grand Canyon National Park showcases a breathtaking combination of sedimentary and metamorphic rocks, while its history of flooding.

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The scientific model of pressure belts exactly matches the pressure systems in the atmosphere.
t/f

Answers

The given statement "The scientific model of pressure belts exactly matches the pressure systems in the atmosphere" is False. The scientific model of pressure belts is not completely accurate as the pressure systems in the atmosphere. So, the correct option is False.

What are Pressure Belts? The uneven heating of the earth's surface by the sun produces different pressure systems or zones in the atmosphere. This is referred to as pressure belts. The surface winds are generated by these pressure systems. In the troposphere, there are six main pressure belts. At the equator, the air rises, cools, and then descends at around 30 degrees latitude, forming a series of alternating high and low-pressure systems around the world. These zones of alternating pressure are known as the Inter-Tropical Convergence Zone (ITCZ) and the Sub-Tropical High Pressure Belts (STHPB).The scientific model of Pressure Belts:The scientific model of pressure belts is utilized to explain the pressure systems in the atmosphere. The scientific model of pressure belts is a theoretical model that describes atmospheric pressure in the Northern and Southern Hemispheres. It was created to help scientists comprehend how changes in the atmosphere affect weather systems. The scientific model of pressure belts describes the interactions between high-pressure systems and low-pressure systems. Although the scientific model of pressure belts is useful, it does not provide a complete understanding of the atmospheric pressure system. It provides a foundation for meteorologists to predict and understand weather patterns, but there are still some unanswered questions. So, the scientific model of pressure belts is not exactly matching the pressure systems in the atmosphere.

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What percentage of the atmosphere does nitrogen gas make up?.

Answers

The air in the Earth’s atmosphere is made up of approximately 78% nitrogen and 21% oxygen.

Question 1
Places on Earth receiving more sunlight experience:
O Warmer climate
O Cooler climate

Answers

Answer:

Warmer climate.

Explanation:

Since sunlight makes you hot, places on Earth receiving more sunlight experience Warmer Climates.

Which of the following best describes the difference between oceanic and continental crusts? a. the continental crust is thicker and less dense than oceanic crust
b. the continental crust is thinner and more dense than oceanic crust
c. the continental crust is thinner less dense than oceanic crust
d. the continental crust is thicker and more dense than oceanic crust​

Answers

Answer: The answer is choice A

Explanation: Even though the continental crust is considerably thicker than the oceanic crust, it has a much lower density. Hope this helps!

body of water partially surrounded by land

Answers

Answer:

Explanation:

A bay is a body of water partially surrounded by land. A bay is usually smaller and less enclosed than a gulf. The mouth of the bay, where meets the ocean or lake, is typically wider than that of a gulf.

Where can freshwater be found in Saudi Arabia's vast deserts? 

Answers

Answer: They get their water from groundwater

which island is 65° N, 18° W

Answers

Answer:

Iceland

Explanation:

I put the coordinates in Maps :)

which island is 65 N, 18 W

Iceland is an island country in the Nordic region known for its stunning terrain. Iceland's geographic location is 65° N and 18° W.

What is the location and significance of Iceland?

The stunning terrain of the Nordic island nation of Iceland, which has volcanoes, geysers, hot springs, and lava fields, defines the country. The national parks of Vatnajökull and Snaefellsjökull provide protection for enormous glaciers. The majority of the population resides in the capital, Reykjavik, which is powered by geothermal energy and has the National and Saga museums, which chronicle Iceland's Viking history.

The oldest parliament in the world is located in Iceland. The establishment of a national parliament, the Althingi, to govern the island in 930 is when Iceland's long history of democracy began.

Iceland is frequently named the world's happiest nation and is also regarded as one of the most peaceful nations. Since 1869, they haven't had a permanent army.

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describe the changing nature of this sandy beach if you were to walk from the sand dunes toward the sea

Answers

If you were to walk from the sand dunes toward the sea on a sandy beach, you would likely notice a number of changes in the nature of the beach.

As you first approach the sand dunes, the sand may be loose and granular, and you may notice a variety of plants and wildlife in the area. The sand dunes themselves may be tall and steep, and may be covered in vegetation such as grasses or shrubs.

As you walk closer to the water, the sand may become more compact and harder, and the dunes may become less steep and more gradual. You may also notice that the vegetation becomes less dense, as the salt and wind from the sea can make it difficult for plants to survive.

As you approach the water's edge, the sand may become wet and packed down, and you may see evidence of the tide's movement, such as tide pools or seaweed. The water may be clear and calm, or it may be rough and choppy depending on the weather conditions.

As you move further into the sea, the sand will disappear and will be replaced by rocks, coral reefs or other forms of marine life. The water will become deeper and the sea creatures will become more diverse and abundant. Depending on the location, you may also encounter waves, currents, and tides that create a dynamic and ever-changing environment.

Overall, the sandy beach will change from a relatively stable and protected environment with a rich biodiversity on the dunes side to a dynamic and ever-changing environment with a less diverse but rich in marine life on the sea side.

Bill is investigating the declining population of green tree frogs around Crystal Lake. He estimates that 430 of these frogs currently live around the lake. His studies show the frog population is declining by about 3.7% each year due to severe drought. You can use a function to approximate the population of green tree frogs around Crystal Lake x years from now if the drought continues.

Answers

The function which is used to approximate the population of green tree frogs around Crystal Lake x years from now if the drought continues is P(x) = 430 × (0.963)ˣ

Let P(x) be the population of green tree frogs x years from now, then we can use the formula

P(x) = P(0) × (1 - r)ˣ

where P(0) is the initial population, r is the annual rate of decline (in decimal form), and x is the number of years from now.

Based on the given information, we have:

P(0) = 430 (initial population)

r = 0.037 (annual rate of decline)

Substituting these values into the formula, we get:

P(x) = 430 × (1 - 0.037)ˣ

Simplifying:

P(x) = 430 × (0.963)ˣ

Therefore, we can use this function to estimate the population of green tree frogs around Crystal Lake x years from now if the drought continues.

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give four reasons why the interior of the earth is hot​

Answers

Explanation:

♤decay of radioactive elements

♤ leftover heat from planetary formation

♤heat released as the liquid outer core solidifies near its boundary with the inner core.

Answer:♤decay of radioactive elements

♤ leftover heat from planetary formation

♤heat released as the liquid outer core solidifies near its boundary with the inner core.

Explanation:

As the planets are observed over time, their paths are all in a narrow band in the sky. will wander over the entire sky. are all near the path the Sun takes through the sky. will be near the Sun's path for Venus and Mercury and are in the opposite part of the sky from the Sun's path for the outer planets.

Answers

As the planets are observed over time, their paths Option C. are all near the path the Sun takes through the sky.

In the heliocentric model, the Sun is at the center, and the planets revolve around it in elliptical orbits. From the perspective of an observer on Earth, the apparent paths of the planets across the sky are referred to as their "apparent motion."

The planets, including Earth, follow orbits that are roughly in the same plane called the ecliptic plane. This plane is determined by the plane of Earth's orbit around the Sun. Since the other planets orbit the Sun in a similar plane, their paths appear to be near the same path the Sun takes through the sky, which is the ecliptic.

However, it is important to note that the planets do not wander randomly over the entire sky (option B). They follow predictable paths that are influenced by their orbital motion around the Sun. These paths may appear to deviate slightly due to the tilt of Earth's axis and other celestial phenomena, but overall, they remain close to the ecliptic.

Option D is not entirely accurate because while inner planets like Venus and Mercury are generally found near the Sun's path in the sky, the outer planets can be observed anywhere along the ecliptic. The positions of the outer planets vary relative to the Sun's path, but they are still generally in proximity to the ecliptic.

Therefore, option C is the most accurate choice as it describes the general behavior of planetary paths being near the path the Sun takes through the sky, which is the ecliptic.

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The question was Incomplete, Find the full content below:

As the planets are observed over time, their paths

A. are all in a narrow band in the sky.

B. will wander over the entire sky.

C. are all near the path the Sun takes through the sky.

D. will be near the Sun's path for Venus and Mercury and are in the opposite part of the sky from the Sun's path for the outer planets.

which projection would be best for easily visualizing populations in one part of the world

Answers

Answer:

Three of these common types of map projections are cylindrical, conic, and azimuthal.

Cylindrical Map Projections -  Cylindrical map projections are one way of portraying the Earth.

Conic Map Projections -  A method of projecting a map of parts of the spherical surface on a surrounding cone.

Azimuthal Map Projections

why is the number and intensity of wave cyclones (extra-tropical storms) greatest during the late fall, winter and spring months?

Answers

Cloud cover and light rain to strong gales, thunderstorms, blizzards, and tornadoes can all be caused by extratropical cyclones.

Extratropical cyclones, also known as mid-latitude cyclones or wave cyclones, are low-pressure systems that, combined with high-pressure system anticyclones, control the weather over a large portion of the planet. Cloud cover and light rain to strong gales, thunderstorms, blizzards, and tornadoes can all be caused by extratropical cyclones. Large scale (synoptic) low pressure weather systems that develop in the equatorial middle latitudes of the Earth are known as these kinds of cyclones. Extratropical cyclones, in contrast to tropical cyclones, cause abrupt variations in temperature and dew point along broad axes, known as weather fronts, around the cyclone's center.

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why do hurricanes that form in the eastern pacific ocean tend to head out to sea instead of hitting the west coast of north america? multiple select question.

Answers

Hurricanes that form in the eastern Pacific, typically off the coast of central Mexico, tend to move west-northwest away from the U.S. West Coast because of the trade winds, which help steer hurricanes toward the East Coast and away from the West Coast.

What are hurricanes?

A hurricane is a large rotating storm with swift winds that develops over tropical regions' warm seas. Hurricanes have an eye in the center with low air pressure and sustained winds of at least 74 miles per hour. A tropical cyclone is the designation given to a hurricane in scientific terms. These powerful storms frequently begin as tropical waves, which are low pressure systems that sweep over wet tropical regions and may intensify shower and thunderstorm activity. These waves frequently occur over the ocean. The elements for the formation of a hurricane include thunderstorms, warm ocean water, and low winds.

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HELPPPP ME PLEASE! Thank youu btw extra points

HELPPPP ME PLEASE! Thank youu btw extra points

Answers

Answer:

For 9 its c

For 10 its c also

igneous rocks formed at mid-ocean ridges are primarily

Answers

Igneous rocks formed at mid-ocean ridges are primarily basaltic in nature. Basaltic rocks are dark-colored, dense, fine-grained rocks that are usually composed of minerals such as olivine, pyroxene, and feldspar.

The mid-ocean ridges are formed by the movement of tectonic plates, which results in volcanic eruptions that produce lava flows. When the lava cools down, it solidifies into basaltic rocks. These rocks are formed through a process known as solidification, in which the molten material (magma) cools and solidifies.

In the case of mid-ocean ridges, the magma comes from the Earth's mantle, which is a layer of the planet that lies between the crust and the core.The mantle is composed of several layers, including the lithosphere, the asthenosphere, and the lower mantle.

The lithosphere is the outermost layer of the mantle and is made up of the Earth's crust and the uppermost part of the mantle. The asthenosphere is a semi-solid layer of the mantle that lies just beneath the lithosphere and is responsible for the movement of tectonic plates.

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In a newspaper, it was reported that the number of yearly robberies in Springfield in 2013 was 180, and then went down by 40% in 2014. How many robberies were there in Springfield in 2014? party leaders sometimes use __________ legislation that includes many issues in an effort to create a winning coalition that will support passage of the bill. group of answer choices Choose the best answer. The diagonals of a rectangle:A. are the not same lengthB. are double the shortest sideC. are the same lengthD. none of these 100x100-000000000000000000000000000000000000000000000000000000000000000 Here is another one just 2 more questions I have 2 min left pls! Help me please answer thanks Vanessa gets her hair cut and colored at a salon. She leaves a 15% tip for services. If the haircut is $45 and the color treatment is $150, how much of a tip does she leave? TRUE / FALSE. a software object is created for a university class. a reasonable abstraction allows viewing and modifying variables for the teacher's name, and viewing variables for the list of students' names. Which concept is illustrated by United States participation in both the General Agreement on Tariffs and Trade (GATT) and the North American Free Trade Agreement (NAFTA) I need help figuring out all the blanks with the red "x" Let d be a positive integer. Show that among any group of d+1 (not necessarily consecutive) integers there are two with exactly the same remainder when they are divided by d. HINT: Use the Pigeon-hole Principle! 5Type the correct answer in the box. Spell all words correctly.Complete the sentence.is the sacrifice involved in making one decision over another.ResetNext2 The town council of Frostbite, Ontario, is trying to decide whether to build an outdoor skating rink which would cost S1 million and last for only one season. Operating costs would be zero. Yearly passes would be sold to anyone who wanted to use the rink. If p is the price of the pass in dollars, the number demanded would be q 1200-0.6p. The council has asked you to advise them on building the rink. Your report should say that A) revenue won't cover construction costs at any ticket price. There is no way to B) if the rink is built and price is set to maximize profits, the town makes a profit and C) if the rink is built and price set to maximize profits, the town makes a profit but D) there is no price at which ticket revenues still cover costs, but total consumer surplus E) None of the above increase total consumer surplus by building the rinlk consumers will be better off consumers are worse off than without a rink. from the rink exceeds costs. At your lab station, you put 30 mL of hydrogen peroxide into three separatebeakers and add 2 grams of ground up liver to each one. You place one beakerin a warm water bath and one beaker in an ice water bath. One beaker iskept at room temperature. Large numbers of bubbles are observed forming in the beaker with the warm water, a moderate number in the room temperature beaker, but almost no bubbles are produced in the cold version of the experiment.Based on the investigation above, what inference can be made about theresults? Which equation represents a nonlinear function? A journalist argues that each railway company should be requiredto charge all customers the same price for the same journey. Thisthe journalist argues would increase consumer surplus. Is the jour-n In 1992, 18.6% of the world population was undernourished. In 2015, 10.9% of the population was undernourished. The average percentage change per year was Which of the following is not a good way to see the needs of invisible people around you? Ask the people in my life if they need help with anything Offer invitations to people I don't know very well Ask other people to tell me their story Wait for someone to tell me they need something Refer to the following diagram.A decline in U.S. housing prices, as in 2007, pushed the AD curve from AD1 to AD2. Dynamic feedback effects that would destabilize the economy could shift:A) SAS2 to SAS3.B) AD2 to AD1.C) AD2 to AD3.D) SAS1 to SAS2. There is a tank with 100L of water where 4kg of salt is dissolved. You open a faucet to add a salt solution of .6kg/L at the constant speed of 10 L/min. When do you have to close the faucet if you want the concentration of the salt solution in the tank to be .25kg/L in the tank? Find the time it takes after the faucet is open to the nearest minute.