Topic 4 Lesson 3 Rocks, Minerals, and Soil

Front

What is luster in minerals?

Back

Luster is the way a mineral reflects light. It can be described as shiny, dull, waxy, or greasy.

Front

What mineral has a waxy or greasy appearance?

Back

Talc is a mineral that has a waxy or greasy appearance.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat surfaces or layers.

Front

What is streak in minerals?

Back

Streak is the color of the powder left when a mineral is rubbed on a plate.

Front

What is a mineral?

Back

A mineral is a naturally occurring, inorganic solid with a definite chemical composition and crystalline structure.

Front

What is the difference between rocks and minerals?

Back

Rocks are made up of one or more minerals, while minerals are individual substances.

Front

What is soil?

Back

Soil is a mixture of organic matter, minerals, gases, liquids, and organisms that support plant life.

Front

What are the three main types of rocks?

Back

The three main types of rocks are igneous, sedimentary, and metamorphic.

Front

What is an igneous rock?

Back

Igneous rock is formed from the cooling and solidification of molten rock (magma or lava).

Front

What is sedimentary rock?

Back

Sedimentary rock is formed from the accumulation and compaction of mineral and organic particles.