Soil and Agriculture

Which type of soil can hold the greatest amount of water?

• sand
• silt
• clay
• loam

Wind blowing dirt and sand through the air is an example of...

• weathering 
• erosion

Water gets into the cracks of rock and freezes, causing the rock to break.  What is this an example of?

• erosion
• weathering

Movement of soil and rocks from one place to another is called...

• weathering 
• humus
• erosion

Breaking down or wearing away of rocks is called....

• weathering
• humus
• erosion 

What is the movement of soil from one place to another?

• weathering
• deposition
• discharge
• erosion

This type of weathering occurs when rock is physically broken down into smaller pieces of rock.

• mechanical weathering
• chemical weathering
• erosion weathering
• deposition

How is mechanical weathering different from chemical weathering?

• Chemical weathering happens over much shorter time frame than mechanical weathering.
• Chemical weathering changes the chemical composition of rocks; mechanical weathering does not.
• Chemical weathering occurs only in tropical climates; mechanical weathering occurs only in cool climates.
• Chemical weathering occurs only in the mountains; mechanical weathering occurs only on flat land.

Weeds growing into the cracks in a sidewalk and the sidewalk begins to crumble is an example of:

• mechanical weathering
• chemical weathering

Potholes forming in the road after a cold winter is an example of:

• mechanical weathering
• chemical weathering