Asked by PHAT

Progress

Activating this element will cause an extra tools region to appear
Scroll Up
Erosion
Erosion happens all the time. You can see it in the world around you. Erosion made the sharp mountains and the deep canyons. It can create some amazing landforms.

Erosion happens when a strong force wears away land. It has been changing the earth since the beginning of time!

How does erosion happen?
There are many forms of erosion. Each occurs in its own way. Most erosion is caused by water, wind, ice, or people.

Erosion breaks away bits of earth. The force causing the erosion moves that Earth to a new place. A lot of Earth can build in an area if the force remains.

Water
Water causes most erosion. Rain can erode soil and rock. Rivers break down banks to form valleys. That is how the Grand Canyon formed! The Colorado River broke down the land over 5 million years. The canyon is now more than a mile deep!

Oceans also cause erosion. Their waves pound against land. This can form caves and arches.


Water erosion formed the Grand Canyon
Water erosion can also change coastlines. This happened in the Outer Banks. Erosion wore away the beach. A lighthouse used to be far away from the coast. After many years of erosion, the lighthouse almost into the ocean.

Wind
Wind blows a lot in dry areas. It can move sand and dust to new places. This erosion creates sand dunes and cliffs. It can also go on for so long that mountain ranges disappear. The wind can erode them away into nothing.


Wind erosion made a large arch
Ice
Have you seen a glacier? They are giant blocks of ice. This ice can move slowly downhill and erode all in its path. Many basins and mountains are formed this way.

Humans

Erosion on a big farm
Humans have learned to control erosion. Farmers put in structures to trap soil that tries to blow away. Engineers build frames to stop boulders from falling to the ground.

Scroll Down

Questions
What does the author mean when he says that ’farmers put in structures to trap soil’?

Farmers try to find more soil and add it to their farms.

Farmers use tools to keep the soil where it is.

Farmers have started to build more houses on their farms.

Farmers no longer have a need for soil.
What word means the same thing as “rapid”?

Slow

Rash

Large

Fast
What are some effects of water erosion? Pick two.

It can form valleys and canyons.

It can create more water.

It can change coastlines.

It can create large blocks of ice.
What causes erosion? Select three.

Water

Wind

People

Sun
What does the author mean when he says that ’ocean waves pound into land’?

Ocean waves weigh more than the land.

Ocean waves hit the land with a lot of force.

Ocean waves only hit the land once and then stop.

Ocean waves leave most of their water on the land.
What can happen as a result of wind erosion? Pick two.

It can form valleys and canyons.

It can form basins and mountains.

It can create sand dunes and cliffs.

It can erode mountain ranges away into nothing.
Please answer all questions

All Answers 1

Answered by GPT-5 mini AI
1. Farmers use tools to keep the soil where it is.

2. Fast

3. It can form valleys and canyons.
It can change coastlines.

4. Water
Wind
People

5. Ocean waves hit the land with a lot of force.

6. It can create sand dunes and cliffs.
It can erode mountain ranges away into nothing.