rocks and minerals

Front

What are igneous rocks?

Back

Igneous rocks are formed from the cooling and solidification of molten rock (magma or lava). They are not formed from geysers.

Front

What is a characteristic of all minerals?

Back

All minerals have a crystalline structure.

Front

What is the streak of a mineral?

Back

The streak of a mineral is the color of the powder produced when it is rubbed against an unglazed tile.

Front

What is the color of a mineral?

Back

The color of a mineral is a physical property that can be easily observed.

Front

What does the Mohs Scale measure?

Back

The Mohs Scale measures the hardness of minerals.

Front

What is the definition of a mineral?

Back

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

Front

What is the difference between igneous and sedimentary rocks?

Back

Igneous rocks are formed from molten material, while sedimentary rocks are formed from the accumulation of sediments.

Front

What is cleavage in minerals?

Back

Cleavage is the tendency of a mineral to break along flat, even surfaces.

Front

What is luster in minerals?

Back

Luster describes how light reflects off the surface of a mineral, indicating its shine.

Front

What is hardness in minerals?

Back

Hardness is a measure of a mineral's resistance to scratching.