Grade 3 Rocks and Minerals

Front

Rocks that come from hot lava and magma that is cooled and hardened are called:

Back

Igneous

Front

All rocks contain at least one mineral.

Back

True

Front

Rocks that are made from bits of rock that have been pressed together under water are called:

Back

Sedementary

Front

Can minerals be used to make things we need?

Back

True

Front

Sand, soil, and decayed organisms ___________________ to become sedimentary rock.

Back

pile up and cement together

Front

We use the Moh's Scale to measure the ______________ of a mineral.

Back

hardness

Front

Which of these is NOT a property of minerals? luster, hardness, scratch, streak

Back

scratch

Front

We use this test to measure the hardness of a mineral.

Back

scratch test

Front

______ are nonliving materials found in nature.

Back

rocks

Front

Existing rock ______________ to become metamorphic rock.

Back

uses pressure and heat