Soil Practice Quiz

What is soil?

• A mixture of minerals
• A mixture of water, minerals, gases and organic matter
• A type of rock
• A type of bacteria

What does weathering mean?

• To form or create new
• To build up
• To break down
• To completely destroy

Why is soil important to plants?

• Plants extract water from the soil
• Plants extract nutrients from the soil
• Plants anchor themselves in the soil
• All of the above

Which of the following is not a major weathering factor?

• Plants
• Animals
• Water
• Wind

Texture of soil is most often decided by

• The colour of the particles
• The chemical properties of the particles
• The size of the particles
• The density of the particles

Different soil types are made of:

• different types of organic matter
• different amounts of soil textures
• different rocks and minerals
• the same types of soil textures but different types of organic matter

What type of sand is made of nearly equal parts of sand, clay and silt?

• Sandy soil
• Clay soil
• Loamy soil

What do we call the layers of soil?

• Deposits
• Horizons
• Minerals
• Rocks

The very top layer of soil is mostly made of

• Solid rock 
• Clay and mineral deposits
• A mixture of minerals and organic material
• Mostly organic material (humus)

Soil is made up of

• living things only
• living and nonliving things
• nonliving things only