CHAPTER 5 TEST: The Good Earth

Weathering is a process that breaks down rocks to create soil. This process takes –

• many years

• a few days

• several months

• six weeks

What two things does soil, as a natural resource, provide for plants?

• Bedrock for protection

• Support for roots to grow

• Nutrients to stay healthy

• Energy to make food

A student planted sunflower plants in different components of soil. In which component of soil will the plant have the most nutrients?

• Clay

• Humus

• Sand

• Rock particles

These organisms need soil to-

• provide support for trees to grow

• give shade from the sun

• provide a habitat for them to live

• give small streams water they need to flow

Which soil component consists of small grains of worn-down rock, has few nutrients, and does not hold water well?

• Parent Rock

• Clay

• Bedrock

• Sand

Humus can best be described as –

• a layer of soil full of large rocks and minerals

• tiny particles of soil that hold water well

• the movement of soil from one place to another

• decayed matter in the soil

Materials that plants and animals need to live and grow are called –

• particles

• organisms

• adaptations

• nutrients

Which component of soil is made up of very small broken pieces of rock with particles larger than clay and smaller than sand?

• Silt

• Bedrock

• Humus

• Compost

Soil is important to people because it –

• creates new landscapes

• supports the growth of a lot of food

• can be replaced quickly

• changes components quickly

Tags

CCSS.RI.3.2

CCSS.RI.4.2

CCSS.RL.2.2

CCSS.RL.3.2

CCSS.RL.4.2

Which of the following can become humus?

• Rocks

• Sand

• Leaves

• Water