Earth surface review

Decayed organic material in soil is called______.

• Litter
• Silt
• Humus
• Clay

Topsoil which contains the HUMUS is the soil layer best for growing plants.

• True
• False

Which of the following is NOT one of the three types of soil?

• clay
• sand
• silt
• mud

When plants, animals, and other organisms die, they break down and become part of the soil. What is this part of the soil called?

• sand
• silt
• clay
• humus

Which of the following is the largest particle in soil?

• sand
• silt
• humus
• clay

Which of the following best describes soil erosion?

• A.  the breakdown of soil 
• A.  the improvement of soil
• A.  the addition of soil
• A.  the movement of soil by wind or water

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

• sand
• silt
• clay
• loam

Many plants cannot grow in sandy soil. Why is this true?

• Sandy soil does not hold enough water.
• Air cannot pass through sandy soil.
• Roots cannot easily push through sandy soil.
• Sandy soil has too many nutrients.

Tags

CCSS.RI.2.9

CCSS.RI.4.8

CCSS.RI.5.8

CCSS.RI.6.8

CCSS.RL.4.5

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