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4 years ago

A tree root breaking a rock into smaller fragments is an example of both _______ and mechanical weathering

Geography

1 answer:

Bad White [126]4 years ago

5 0

Answer:

biological

Explanation:

The trees are plants, thus they are part of the biosphere. With their roots, the trees manage to create lot of pressure on the rocks, thus contributing to their weathering through breaking them up. Even though this weathering is happening because of the usage of physical force, because it is force created by living organism, it is considered as biological process. The mechanical weathering in this situation is exactly that, the physical force used, so the tree roots manage to create two different types of weathering at the same time.

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Assume that the Moon is hit by about 25 million micrometeorite impacts each day (this number comes from observations of meteors

mestny [16]

Answer:

3.03 Billion Days or 8.30 Million years

Explanation:

Given,

No. of micrometeorite impacts per day on the Lunar surface = 25000000

Impacts needed to erase a footprint = 20

Area of footprint = 300 cm²

We know that surface area of the Moon = 37.93 Million Km² = $37.93\times 10^{16} cm^{2}$

To find: How long will it take to erase one footprint?

Using the above information,

No. of impacts per cm² per day is

$= \frac{25000000}{37.93\times 10^{16}}$

No. of impacts on area of a foot print (300 cm²) per day will be,

$= \frac{25000000}{37.93\times 10^{16}}\times 300$

$= 6.59\times 10^{-9}$

To erase the footprint there must be 20 impacts on the area of footprint.

Time taken for $6.59\times 10^{-9}$ impacts = 1 Day

Time taken for 1 impact is

$= \frac{1}{6.59\times 10^{-9}} days$

Hence, time taken for 20 impacts will be

$= \frac{1\times20}{6.59\times 10^{-9}} days$

$= 3.03 \times 10^{9} days$

$= \frac{3.03 \times 10^{9}}{365}years$

$= 8.30 \times 10^{6} years$

It would take around 3.03 Billion Days or 8.30 Million years for one of the footprints left by the Apollo astronauts to be erased.

6 0

3 years ago

Which statements does NOT describe people’s interactions whit the environment A) people adapt to their environment B) population

lisabon 2012 [21]

C.) The environment is seldom affected by technological advances.

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3 years ago

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What is it about cities that make them microclimates?

Sav [38]

Answer:

Explanation:

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3 years ago

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Where in the us do hurricanes typically occur the most.

sashaice [31]

Where in the U.S. do hurricanes typically occur the most?
B.west coast

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3 years ago

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How are hills different from mountains

ArbitrLikvidat [17]

Hills are easier to climb than mountains. They are less steep and not as high. But, like a mountain, a hill will usually have an obvious summit, which is its highest point. According to the U.S. Geological Survey, there is no official difference between hills and mountains.

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3 years ago