3rd Grade MYF Spiral Review

Front

What is a characteristic of a rock that has been in the ocean for a long time?

Back

A rock that is smooth and round.

Front

What is the hardness of Orthoclase on the Mohs scale?

Back

Orthoclase can scratch Apatite but can be scratched by Quartz.

Front

How do insulators work to keep things warm?

Back

They stop heat from moving in or out.

Front

What property of a mineral is observed when it has a metallic sheen?

Back

Luster.

Front

What happens to a large rock at the end of a moving stream over the years?

Back

The rock will get smaller.

Front

What is the definition of a mineral?

Back

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

Front

What is the Mohs hardness scale used for?

Back

To measure the hardness of minerals.

Front

What is the difference between an insulator and a conductor?

Back

An insulator stops heat from moving, while a conductor allows heat to flow.

Front

What does the term 'luster' refer to in minerals?

Back

The way a mineral reflects light.

Front

What is erosion?

Back

The process by which rocks and soil are worn away and transported by natural forces.