Weathering and Erosion Objective: Define and identify two types of slow processes that change the landforms on our Earth.

Did You Know? Did you know that our Earth is changing everyday? Some changes happen quickly. Example- Volcano Some changes happen slowly. Example- Weathering and Erosion

What is Weathering and Erosion? Weathering- is the breaking down of rocks. This is caused by- wind, water, ice, and root growth. Erosion- is the movement of rocks from one place to another. This is caused by- wind, water, and gravity.

$1,000,000.01 Questions! Where does sand come from? -from larger pieces of rock How is sand made? -from weathering~ wind, water, ice, root growth

Let’s look at how landforms can weather and erode by the wind.

This rock has been weathered by the wind. Pieces of the rock eroded away by the wind

More landforms that have weathered and eroded by the wind.

Let’s look at how landforms can weather and erode by water.

As the water moves, what might happen to the land over time?

This land has been weathered by moving water. This land has been eroded by moving water.

More landforms that have been weathered and eroded by water.

Let’s look at how landforms can weather by ice and erode by gravity.

This rock has weathered by ice. This rock has eroded by gravity.

Let’s look at how landforms can weather by root growth and erode by gravity.

Let’s review weathering and erosion with a song!!! Written by: Ms. Rich Sung by: A Class Full of Geologists