Rocks

The _______ shows how one rock changes into another.

• rock cycle

• formation of crystals

• melting process

• none of the above

Which statement is correct regarding metamorphic rock formation?

• The temperature inside Earth is cooler which allows metamorphic rocks to form more quickly.

• Small pieces of rocks are buried, squeezed, and cemented together.

• Weathering and erosion cause rocks to break down to form metamorphic rocks.

• The deeper into Earth's crust, the higher the pressure that forms metamorphic rocks.

The crystals that form in slowly cooled magma produce

• tiny mineral grains.

• invisible mineral grains.

• fine-grained mineral grains.

• large mineral grains.

Foliated rocks are distinguished by

• layers

• compaction

• crystallization

• lack of layers

The processes involved in the rock cycle include all of the following EXCEPT

• condensation

• erosion

• weathering

• air holes

Rocks are formed when magma or lava

• erodes

• crystallizes

• undergoes radioactive decay

• weathers

All of the following conditions in Earth can cause metamorphic rocks to form EXCEPT:

• exposure to air

• the presence of hot, watery fluids

• heat

• pressure

Sedimentary rocks are changed to sediments by

• compaction

• weathering and erosion

• cementation

• heat and pressure

Which factors allow rocks to bend or fold without melting?

• gravity and pressure

• composition and gravity

• pressure and temperature

• temperature and gravity

Sediments in sedimentary rocks are often

• held together with natural cements

• formed when atoms of melted minerals rearrange themselves

• formed when lava erupts from a volcano

• formed by magma trapped below Earth's surface