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3 years ago

How do we get thermal and light energy from the sun?

Geography

1 answer:

lorasvet [3.4K]3 years ago

6 0

Answer and explanation:

The sun's core is so hot that there is so much pressure that nuclear fusion takes place. Hydrogen is changed to helium and nuclear fusion creates photons (light) and heat.

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This upland area lies just to the west of the mountain range in the eastern United States.

Anuta_ua [19.1K]

Answer:

Appalachian Plateau

Explanation:

The Appalachian Mountains are a mountain range that runs down the eastern United States.

The Appalachian Plateau is on their northwestern side and stretches from New York to Alabama.

6 0

3 years ago

if earth were to be replaced with an object with the same mass but much smaller size would the moon still orbit it

Serggg [28]

Answer:

Oct 2, 2019 - However the moon is already increasing the size of its orbit around the earth and would continue to do so with a smaller earth just not quite as quickly. This is all assuming the object replacing the earth is still made out of the same stuff such as rock, metal and water.

7 0

4 years ago

A plate moving at a rate of 4 is moving toward a plate that is 10,000 km away. In how many years will the plates collide?

disa [49]

Answer:

The plates will collide in 250 million years.

Explanation:

Earth is divided into numerous plates. All of them are in constant motion which is driven by the convection currents in the mantle. All plates move in different directions, with some moving toward each other, some moving away from each other, and some slide past each other.

In this case, we have a plate that moves toward another plate, and the other plate presumably is static (not really possible, but still). The plate that moves is moving with 4 cm per year, and the distance between the plates is 10,000 km, so in order to get a result in how many years they will collide, we need to convert the km into cm and then simply divide them by the speed of the plate.

1 m = 100 cm

1 km = 1,000 m

1,000 x 100 = 100,000 cm

100,000 x 10,000 = 1,000,000,000 cm

1,000,000,000 / 4 = 250,000,000

We get a result of 250 million, meaning that the plates will collide in 250 million years.

6 0

3 years ago

Read 2 more answers

During the day, land heats faster than water, causing pressure to form over land and pressure over coastal water. A) neither is

Ulleksa [173]

Answer:

The answer to be filled in the given blank is

option B) low, high

Explanation:

Therefore, during the daytime, heating of land is faster as compared to water which causes low pressure to form over land and high pressure over coastal areas.

This is because the heat capacity of water is more as compared to land, i.e., water takes longer time to vary its temperature than land. Thus land gets heated faster as compared to water.

Therefore, movement of warm air above the land reduces pressure over land and increases pressure over sea.

5 0

3 years ago

Because the original assumption about all matter interacting with electromagnetic radiation was proved incorrect for the Milky W

irina1246 [14]

Question: Because the original assumption about all matter interacting with electromagnetic radiation was proved incorrect for the Milky Way Galaxy, scientists next need to determine whether the assumption still holds true for other galaxies. To do this, scientists need a way to calculate the masses of individual galaxies and galaxy clusters, so they can compare those masses with the luminous matter we actually observe. Astronomers use rotation curves to measure the masses of individual spiral galaxies. The faster the stars orbit about the center of a galaxy, the more mass there is between them and the galactic center. Starting from the hypothesis that other galaxies are made up only of visible matter, astronomers can predict what the galaxy rotation curves would look like if the hypothesis were correct. Sort the galaxy rotation curves according to whether they would support or refute the hypothesis that galaxies are made up only of visible matter.

a) Rotation Curve 4

b) Rotation Curve 3

c) Rotation Curve 1

d) Rotation Curve 2

e) Rotation Curve 6

f) Rotation Curve 5

Explanation:

Disproves hypothesis:

b) Rotation Curve 3

c) Rotation Curve 1

d) Rotation Curve 2

Supports hypothesis:

a) Rotation Curve 4

e) Rotation Curve 6

f) Rotation Curve 5

If the hypothesis that galaxies are made only of visible matter is correct, then the galaxy rotation curves should show both an increase and a decline in rotational speed. There should be a peak in rotational speed near the region of concentrated starlight in the galaxy's center. There should then be a decline in rotational speed toward the galaxy's edge, where there is a smaller concentration of visible matter. The steady decline in rotational speed should occur because the stars are farther and farther from the galaxy's center. This distance acts to lessen the effect of gravity due to the central mass concentration.

However, actual measurements of galaxy rotation curves show a flattening or steady increase in rotational speeds, even at large distances from the galaxy centers. This result implies that there must be matter within these galaxies that cannot be seen; in other words, dark matter must be present in other galaxies just as it is present in the Milky Way. Therefore, the data scientists collected refutes the hypothesis that galaxies are only composed of visible matter.

7 0

3 years ago