Science Chapter 8 Soil, Rocks, and Minerals BJU 3rd grade

What is NOT a characteristic to identify minerals?

• Hardness

• Streak

• Color

• Size

Rocks are weathered by ...

• Water, snow, and animals

• Water, wind, and people

• Water, wind, ice, plants

• Water, cars, volcano

What layer of soil helps crops grow?

• topsoil

• subsoil

• bedrock

Topsoil contains ...

• worms and ants

• decayed leaves and plants

• roots to plants

• a dog's missing bone

Hard pieces of the earth's surface is ....

• fossils

• humus

• bedrock

• rocks

Any remaining part of a living thing that died long ago is...

• humus

• fossil

• rocks

• weathering

the remains of living things that have died and decayed

• humus

• weathering

• bedrock

• gross

the breaking down of rocks into smaller pieces

• rocks

• bedrock

• weathering

• fossils

the soil layer that has large pieces of rock and contains NO humus

• topsoil

• bedrock

• humus

• subsoil

What type of rock is formed when melted rock has cooled

• igneous

• sedimentary

• metamorphic