Soil Review Quiz

Which of the following is not a type of soil?

• minerals

• clay

• topsoil

• sand

Weathering is......

• rocks, grass, and mud.

• the breakdown of rocks into smaller pieces

• the breakdown of wind, rain, and friction

• the weather outside

The four main ingredients of soil are....

• wind, water, ice, and humus

• water, air, rocks, and humus

• worms, ice, rocks, and air

• water, air, rocks, and worms

What soil is best for growing plants?

• clay

• sand

• mud

• topsoil

Soil is only dirt.

• true

• false

Depending on how soil is formed, it's color can be....

• yellow

• red

• black

• all of the above

What is HUMUS made from?

• rocks

• The remains of decayed plants and animals
• clay

• chickpeas

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

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

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

Soil is made of

• weathered rocks and minerals
• dead plants and animals
• air and water
• all of the above