Science Quiz 7.4 - 7.5 Soil

What are the two main ingredients that soil contains?

• Humus

• Metal

• Minerals

• Herbs

What is soft organic matter in soil made from the decayed remains of living things called?

• Humus

• Loam

• Minerals

What are solid and made of atoms that are always arranged in a precise, repeating pattern?

• Crystals

• Energy

• Humus

• Minerals

Tags

NGSS.MS-PS1-1

Label the soil horizons, which are the layers contained in most soils.

a

b

c

d

Subsoil

Topsoil

Bedrock

Humus

Where does the color in soil come from?

• Texture

• Gems

• Minerals

(a)   are rare and valuable minerals.

• Crystals

• Salts

• Gems

Tags

NGSS.MS-ESS3-1

What is a mixture of sand, silt, and clay?

• Loam
• Mud
• Bedrock

• Subsoil

Match the terms to their definitions.

• Weathering

• The breaking down of rock by the forces of nature

• Erosion

• The loss of soil by water or wind

• Sediment

• Matter that settles to the bottom or sides of a body of water

Tags

NGSS.MS-ESS2-2

What is a substance found naturally in the earth that has a crystal-like structure?

• Humus

• Loam

• Glass
• Mineral

Answer explanation

According to geologists, a substance must have the following to be called a mineral:

1) Never manmade

2) A particular mineral is always made up of exactly the same kinds of atoms, no matter where on Earth it's found

3) The atoms of a mineral often form a crystal.

What two things can cause the Earth's surface to change rapidly or slowly?

• Meteor showers

• Human activities

• Erosion

• Weathering

Tags

NGSS.MS-ESS2-2