The Rock Cycle

Rocks form in many different ways. What type of rock form when magma or lava hardens?

• rock salt

• igneous rock

• sedimentary rock

• metamorphic rock

Manuel labels a sample of quartz as "nonmetallic". Which mineral property is he describing?

• cleavage

• fracture

• luster

• streak

Scientists can manufacture diamonds from carbon by using heat and pressure. These diamonds can be used to cut rocks, but they are NOT classified as minerals. Why?

• They are made of glass.

• They do not form in nature.

• They are very soft and crumbly.

• They don't have a crystal structure.

Which group of words describes all minerals?

• natural, solid, nonliving

• metallic luster, fracture, streak

• liquid, natural, made of elements

• hardness, crystal shape, nonmetallic luster

Which mineral can conduct electricity?

• calcite

• feldspar

• talc

• quartz

Quartz breaks into uneven pieces. Which property is that?

• streak

• luster

• cleavage

• fracture

A mineral can be scratched with a fingernail and breaks into thin sheets. Which mineral is this?

• diamond

• gold

• mica

• quartz

Which property can be used to identify a rock without using tools?

• hardness

• luster

• mass

• streak

Which processes would change igneous rock into metamorphic rock?

• weathering, cooling, and melting

• weathering, erosion, and cementation

• melting, cooling, and an increase in pressure

• changes in temperature, pressure, and melting

Which type of molten rock would form if quartzite deep within the earth melted?

• granite

• lava

• magma

• sandstone