Rocks and Minerals

Which of these is a continent?

• United States

• Indiana

• North America

• Mariana

The deepest part of the ocean are the ________.

• plains

• trenches

• mountains

• geysers

Large areas of land that rise above the water on Earth's surface are called _________.

• oceans

• countries

• glaciers

• continents

Where is humus found in soil?

• topsoil

• subsoil

• bedrock

• grass

If you observe a mineral's luster, you observe________.

• how it reflects light

• how it breaks

• its hardness

• its color when it is scratched

Why did Mohs pick talc as a 1 on his scale?

• Talc is the hardest mineral.

• Talc is a common mineral.

• Talc is the softest mineral.

• Talc is a very rare mineral.

Rocks are made up of different mixtures of _______.

• minerals

• quarries

• liquids

• crystals

Tags

NGSS.MS-ESS2-1

Most of the water on Earth is salt water found in ____ ______.

(a)  

Soil that has a mixture of sand, silt and clay and is good for growing plants is (a)   .

Living things that break down organic matter and help form humus are (a)   .