Each year, new seafloor is added at the Mid-Atlantic Ridge. The Atlantic Ocean widens, causing North and South America to move farther away from Europe and Africa. Close to the ridge, rocks are younger. As you move away from the ridge, the rocks become older.

The rate of seafloor spreading has not been the same over time. In this activity, you will calculate the average rate of seafloor spreading and then determine when the seafloor started to spread.

1. Where would you find the oldest sections of seafloor, near the continents or near the Mid-Atlantic Ridge?


Working with Map Scales
Below is a map of a section of the North Atlantic. You can see the coastlines of North America and Africa. On both sides of the Mid-Atlantic Ridge, strips of seafloor are labeled with their ages in millions of years. Note the map scale.
2. What is the scale of the map? For this activity, you will use centimeters.

cm = km

3. Choose one strip of seafloor rock. What is the age of the rock?



4. Use your ruler to measure the distance of the strip from the Mid-Atlantic Ridge.

cm

5. Using the calculator, multiply the answer to #4 by 405 to figure out its distance in kilometers. Round to the nearest whole number.

km

Determining Rate of Spreading
Use the age of the rock you have chosen and its distance from the Mid-Atlantic Ridge to calculate seafloor spreading.

6. First you will find out how fast the seafloor is moving away from the ridge on one side. Use a calculator to divide the answer to #5 by the answer to #3. Round to the nearest whole number.

#5 km ÷ #3 million years = km/million years

7. Now find out how fast the seafloor widens every 1 million years. Multiply the answer you got in #6 by 2.

The seafloor spreads at a rate of km every 1 million years.


When Did the Seafloor Start Spreading?
The distance between Point A and Point B, or the coasts of Africa and North America, is 4,550 km. Using your answer to #7, find out when the Atlantic Ocean began to open. Divide 4,550 km by your answer in #7 to find out.

8. 4,550 km ÷ #7 = million years ago.

9. Look at the Geologic Timeline. During what geologic period did the Atlantic start to open?




See if you can figure out the rate of floor spreading (in cm/year) between North America and Africa.
10. #7 x 1000 m x 100 cm ÷ 1,000,000 years = cm/year


11. How far, in centimeters, has the distance between North America and Africa increased since you were born? Multiply the rate by your age.
cm


12. How much has the distance increased during the average lifetime of 82 years?

cm


13. How much closer were the continents when Columbus crossed the Atlantic in 1492?

cm

Answer:

mhjhk

Explanation:

jkjkjk

Answer:

Mexico City

Explanation:

Its a big city, but also a primate ;)

Establishment of new schools and colleges.

Boost of morale.

Political unification of India.

Growth of nationalism.

Paint and Cool Whip are both examples of colloids. Option B is the correct answer.

Colloids are a type of mixture where particles are dispersed throughout a medium, creating a stable and homogeneous mixture. In colloids, the particles are larger than those in solutions but smaller than those in suspensions. Option B is the correct answer.

Paint is a colloid because it consists of small pigment particles dispersed in a liquid medium, such as oil or water. These particles do not settle over time and the mixture appears uniform. Cool Whip, a whipped dessert topping, is also a colloid. It contains small air bubbles dispersed in a mixture of water, oil, and sweeteners. These air bubbles give Cool Whip its light and fluffy texture.

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Answer:

hi do u see my answer? pls tell me

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Answer:

Explanation: One reason that Catastrophism was popular was: Ussher’s estimation age of the earth is a huge events to form mountains and canyons.

Answer:

It is A

Explanation:

 i got it rigt

The conquered the Incan civilization after it had flourished between Spanish; 1100 to 1435. Thus, the correct option is A.

A society governed by a state that has a well-developed culture, language, writing system, and money is referred to as a civilization. As its etymology suggests, the term "civilization" was first connected to towns and cities.

Domestication of plant and animal species, labor specialization, building, upkeep of infrastructure, technological advancement, taxes, and regulation are further characteristics of civilizations.

In the past, a civilization was frequently thought of as a larger and "more sophisticated" culture, in contrast to smaller, ostensibly less developed societies.

In the broadest sense, a civilization contrasts with non-centralized tribal communities, such as the cultures of nomadically herding livestock, Neolithic societies, or hunter-gatherer societies; yet, on occasion, it also contrasts with the cultures that are found inside civilizations itself.

The beginning of civilizations is typically dated to the West Asian Neolithic Revolution's later stages, which culminated in a relatively quick process of urban revolution and state formation, a political development linked to the establishment of a ruling elite.

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Answer:

since no numbers you will assume it is 1

Explanation:

Answer:  The answer is D

Explanation:

Answer:

melted

Explanation:

drásticas changing

Answer:

1: Rock

2:Constantly

Explanation:

most of earth is made of ROCK rock is CONSTANTLY changing

Answer:

Caldera

Explanation:

To accurately create a topographic map, the types of data one needs to collect include the "determination of the right elevation contour."

Also, a geographer needs to determine the contour of the landscape. A topographical map is generally used to show the details of physical features on the site.

Some of the features or things you find on the topographical maps include buildings, fences, roads, rivers, forests, elevation height, etc.

Hence, in this case, it is concluded that making a topographical map counter and height of the land is essential.

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Answer:

Explanation:

1-Exploration is an important step in finding minerals so they can be potentially mined. Our demand for minerals is increasing, for example we need more copper to build renewable energy assets such as wind turbines. This demand is helping drive an increase in exploration across the state.

2-In surface mining, the ore is accessed directly from the Earth's surface, and contact is maintained with the surface throughout the operation. Underground or subsurface mining is accomplished with the help of tunnels going into the Earth, and does not occur on the surface.

3-Milling

food processing

The flour milling process begins with cleaning the grain and tempering it by adding water. The tempered grain is ground in a series of rollermills to remove the bran and to cut the endosperm. Between each rollermill cycle, the ground grain is sifted and separated into various sizes. Middle-size material is sent to a purifier, or shaking sifter, and on to another set of rollermills for further reduction and sifting into a variety of flours and flour blends. These are then stored in large bins.

The flour milling process begins with cleaning the grain and tempering it by adding water. The tempered grain is ground in a series of rollermills to remove the bran and to cut the endosperm. Between each rollermill cycle, the ground grain is sifted and separated into various sizes. Middle-size material is sent to a purifier, or shaking sifter, and on to another set of rollermills for further reduction and sifting into a variety of flours and flour blends. These are then stored in large bins.

Encyclopædia Britannica, Inc.

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wheatIn cereal processing: Milling

Cereal processing is complex. The principal procedure is milling—that is, the grinding of the grain so that it can be easily cooked and rendered into an attractive foodstuff. Cereals usually are not eaten raw, but different kinds of milling (dry and wet) are employed,…

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distilled spirits

The fermentation and distillation process for producing whiskey. The production of whiskey begins with grinding grain into a meal, which is cooked. Malt is introduced to the meal, which results in mash that is cooled and pumped into a fermenter, where yeast is added. The fermented mixture is heated in a still, where the heat vaporizes the alcohol. The alcohol vapours are caught, cooled, condensed, and drawn off as clean, new whiskey. This liquid is stored in a cistern room, and water is added to lower the proof (absolute alcohol content) before the whiskey is placed in new charred oak barrels for aging and later bottling.In distilled spirit: Milling and pressing

The purpose of milling and pressing is to make the starch or sugar more available for enzyme action. Crushing and pressing (grapes and other fruits), milling (cereal grains), or a combination of milling and pressing (sugarcane) are used.

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flour

The flour milling process begins with cleaning the grain and tempering it by adding water. The tempered grain is ground in a series of rollermills to remove the bran and to cut the endosperm. Between each rollermill cycle, the ground grain is sifted and separated into various sizes. Middle-size material is sent to a purifier, or shaking sifter, and on to another set of rollermills for further reduction and sifting into a variety of flours and flour blends. These are then stored in large bins.In flour

… flour, the purpose of the milling process is to separate the endosperm from the other kernel portions. In the production of whole wheat flour, all parts of the kernel are used.

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wheatIn cereal processing: Wheat flour

The milling of wheat into flour for the production of bread, cakes, biscuits, and other edible products is a huge industry. Cereal grains are complex, consisting of many distinctive parts. The objective of milling is separation of the floury edible endosperm from the various branny outer…

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rice

wheatIn cereal processing: Milling

Milling methods used in most of Asia are primitive, but large mills operate in Japan and some other areas. Hulling of the paddy is usually accomplished by pestle and mortar worked by hand, foot, or water power. Improvements are slowly taking place. The yield…

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sugarcane

sugarcaneIn sugar: Juice extraction

…of up to eight four-roll mills, it is forced against a countercurrent of water known as water of maceration or imbibition. Streams of juice extracted from the cane, mixed with maceration water from all mills, are combined into a mixed juice called dilute juice. Juice from the last mill in…

Answer:

A. Stratosphere

Explanation:

The ozone layer, which blocks harmful ultraviolet radiation, is primarily located in the stratosphere, the second layer of the Earth's atmosphere. Therefore, option A is correct.

The ozone layer, which serves as a protective shield against harmful ultraviolet (UV) radiation from the sun, is primarily found in the stratosphere.

The stratosphere is the second layer of the Earth's atmosphere, located above the troposphere. Within the stratosphere, ozone molecules are formed and broken down through a natural process, creating a balance.

This ozone layer absorbs most of the sun's UV-B and UV-C radiation, preventing them from reaching the Earth's surface. This crucial role of the stratospheric ozone layer in shielding the planet from harmful UV radiation is essential for safeguarding ecosystems, human health, and the overall well-being of life on Earth.

Therefore, option A is correct.

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Answer:

B.Countries

Explanation:

This is because the form the largest landforms

Answer:

the answer is continents

Explanation:

When rocks gets deposited on a land then this is known as deposits rocks on. Thus, we can conclude that when Sam blew out through a straw and directed his breath at a pan of sand. Sam is showing the rest of his class how the wind erodes the land.

Answer:

Physical geography focuses on geography as a form of earth science. It tends to emphasize the main physical parts of the earth – the lithosphere (surface layer), the atmosphere (air), the hydrosphere (water), and the biosphere (living organisms)—and the relationships between these parts.

Answer:

latent heat of vaporization: the energy required to transition one unit of a substance from liquid to vapor; equivalently, the energy liberated when one unit of a substance transitions from vapor to liquid.

Explanation:

Answer:

The United States Congress has two houses, the Senate and the House of Representatives

Explanation:

pls mark as brainliest

Answer:

House of Representatives

You dont have any points left .

Answer:

Louisiana

East

North Carolina

Florida

<3

Answer:

The age of rocks and mountains on the edge of neighboring continents varies.

Answer:

I believe it is (D) Grooves created from glacier movement travel in opposite directions on each continent.

Explanation:

pls give brainliest if correct

Answer:

Countries most likely create internal boundaries to: divide territory for administrative purposes.

Answer:

Local market

A person buying large amount of food and beverage

A country with no natural resources

Explanation:

Mark me brainliest

En el pasado, cuando la tecnología de las comunicaciones y el transporte no se habían desarrollado hasta el punto en que se encuentran hoy, las personas solucionaban sus necesidades de ubicación y desplazamiento de forma artesanal.

Así, se utilizaban para la ubicación instrumentos que se guiaban mediante los astros, y para el desplazamiento se utilizaban diversos animales como caballos, bueyes o mulas.

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Answer:

Encouraging aid industrial development can create jobs and improve transport infrastructure.

Explanation:

Infrastructure projects may end up benefiting employers more than employees. Aid can support countries in developing their natural resources and power supplies. Some development projects may lead to food and water costing more.

Answer:

Suelen diferenciarse dos tipos de clientes: el externo es la persona o entidad externa a la organización que mantiene con ella una relación comercial; realiza pedidos y paga por ellos; el interno es la persona que, dentro de la organización, demanda de otras la producción de un bien o servicio.

Explanation:

porque  is

Answer:

Mercury, ball, iron. Planet, crus, wrinkles

Explanation

Thin crust pizza mmmmmm

Answer:

Mercury, ball, iron, planet, crust, wrinkles.