Rocks and Minerals

What mineral is what is in pencils? You can write with it.

• feldspar

• magnetite

• graphite

• kaolinite

The color of a mineral in powder form is called?

• hardness

• specific gravity

• luster

• streak

Occurs when a mineral breaks along a smooth, flat surface

• cleavage
• fracture
• streak
• luster

A mineral's resistance to being scratched is called?

• streak
• luster
• hardness
• heft

The name rock is given when it is broken down into smaller pieces.

• texture
• weathering
• sediment
• erosion

What type of rock is formed due to pressure and heat within the earth?

• igneous
• sedimentary
• metamorphic

Rocks are classified by how:

• they look
• are formed
• they feel

What type of rock are fossils often found in?

• igneous
• metamorphic
• sedimentary
• magma

The rock shown is GABBRO. We can tell that it is an ______________ igneous rock that cooled slowly underground because it has large, visible crystals.

• extrusive

• intrusive

The rock shown is basalt.  We can tell that it is an ______________ igneous rock that quickly on the surface of the ground because it has tiny crystals and a fairly uniform texture

• extrusive
• intrusive