What is made of a mixture of clay, sand, and humus?

• soil

• rocks

• sand

• boulders

Check all that are true about natural resources.

• They are not useful to people.

• They come from Earth.

• Some can be replaced when they are used up.

• They are useful to people.

Tags

NGSS.MS-ESS3-4

What is soil made of?

• soil

• boulders

• gold and silver

• tiny pieces of rock

What natural resource is this chair made of?

• soil

• cotton

• wood

• minerals

What is erosion?

• a kind of soil

• when roots of plants keep soil in place

• a kind of rock

• when rocks and soil are moved by water or wind

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

What is it called when people add harmful things to the land, water, or air?

• reusing

• pollution

• recycling

• protection

Tags

NGSS.MS-ESS3-4

Check all the ways that people can help take care of the Earth.

• pick up trash

• plant new trees

• cut down trees

• recycle and reuse things

What is clay soil like?

• hard and rough

• smooth and dark

• soft and sticky

• rough and soft

What is a refuge?

• a place where people build their homes

• a place where all the trees are cut down

• a safe place for people to work and live

• a safe place for plants and animals to live

Check two answers that tell how people can use air.

• to breath

• to wash their car

• to fill a balloon

• to eat