Rocks, mineral, soil

Rocks are formed from ________.

• minerals

• salts

• sand

• clay

Minerals make up rocks. Which of the following is not a mineral?

• quartz

• feldspar

• mica

• hydrogen

There are two types of soils we have learned. What are these?

• clay and loam

• clay and sandy soil

• dirt and clay

• dirt and sand

Clay can hold much water and it is not good for drainage.

• true

• false

Sandy soils drains water easily because of the large gaps between particles.

• true

• false

Farmers can add sand to clay to allow more drainage for better plant growth.

• false

• true

Gold is an example of _______.

• rock

• mineral

• soil

• none of the above

What do we call the part of the soil which are remains of plants and animals?

• humus

• humerus

• humorous

• humid

Scientists who study rocks are called _________.

• Geogrpahy

• Geologists

• Doctors

• Engineers

The Earth's surface is covered by a layer of rocks called ________.

• core

• crust

• layer

• minerals