Soil Quiz

Soil that is made up of dead plants and animals.

• humus
• silt
• sand
• subsoil

The top layer of soil that contains the most humus. Many living things live here. 

• silt
• topsoil
• subsoil
• bedrock

What is the layer of soil that contains pebbles, and solid rock?

• bedrock
• subsoil
• topsoil

What layer soil contains bugs, worms, and living things?

• topsoil
• subsoil
• bedrock

A mixture of rock and minerals particles, decayed organic material, air, and water is called ______. 

• clay
• soil
• sand
• humus

Which processes are primarily responsible for the formation of soil?

• volcanic activity
• physical and chemical weathering 
• worms and decaying organisms 
• none of the above

Why is it important to protect soil?

• It covers the bedrock layer at the bottom of the earth

• It dries up quickly in the sun.

• It has many harmful pollutants that can damage the earth.

• It has nutrients and minerals that help plants grow.

Tags

NGSS.MS-LS1-5

NGSS.MS-LS2-3

Select the layer of soil which is the best for plant growth.

• bedrock

• topsoil

• weathered rock fragments

• subsoil

Tags

NGSS.MS-LS1-5

Over many years, weather, water, and living things help break down rocks and create soil. This process is called____________

• nutrients

• topsoil

• weathering

• bedrock

Tags

NGSS.MS-ESS2-2

Leaves fall to the ground and decay. What component of soil do they become?

• sand

• clay

• silt

• humus

• rock

Tags

NGSS.MS-LS2-3