Ch. 4 Weathering & Erosion

This is an organic material made of chickpeas that is edible and used as a healthy snack.

Wearing something down by friction (rubbing together) is known as?

What is the main cause of chemical weathering?

This is something that is different in different locations and helps determine what to grow.

Which of the following is a soil conservation practice that is used by farmers in our area?

Sand is not a good soil for growing a crop because?

The soil horizons in a specific area of land is called?

How does mechanical weathering help chemical weathering occur quicker?

The decayed matter in soil is known as?

The process by which natural forces break down rock is called?

Ice, pressure release, plant roots, and moving water can all cause this to occur?

The breakdown of rock by chemical reactions that change a rock's composition is known as?

The layer of soil that is different from the layer above and below it is called?

The four properties of soil include: color, texture, pore space and?

In dry regions, overgrazing by animals can destroy large amounts of vegetation. This causes?

Geologists label which of the following in groups of A, B and C?

When layers or sheets of rock break off this is called?

The rate at which a rock weathers depends a great deal on how much of this that is present.

Chemical weathering changes rocks through...?

The main ingredient of soil is?

A farmer spreads lime on his soil to make it less acidic. He is changing the soil's what?

The breakdown of rock by natural forces that does not change a rock's composition is known as?

The force of moving water can create enough friction for this to occur.

The expansion of desert conditions in an area is known as?