Rock Cycle Practice Quiz

Sedimentary rocks are changed to sediments by (a)   .

• compaction

• weathering and erosion
• cementation

• heat and pressure

Igneous rocks form from _______________ when it cools.

• a) magma

• b) lava

• c) neither a nor b

• d) both a and b

The crystals that form in slowly cooled magma produce (a)   mineral or crystal grains.

• tiny

• invisible

• fine-grained

• large

Which statement is correct regarding metamorphic rock formation?

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

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

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

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

Rocks can change throughout many different processes through the rock cycle. All of the following change rocks on Earth’s surface except _____.

• A) melting

• B) weathering

• C) deposition

• D) compaction

What causes the difference in grain size between intrusive igneous rocks and extrusive igneous rocks?

• Slow cooling in intrusive rocks leads to larger crystals, while fast cooling in extrusive rocks results in smaller crystals.

• Different chemical compositions of the rocks.

• Variations in magma viscosity.

• Differences in pressure during formation.

Fossils are more commonly found in sedimentary rocks than in igneous rocks because:

• Sedimentary rocks form from the accumulation of sediments that preserve organic remains.

• Igneous rocks are too hot and do not allow for fossil preservation.

• Fossils only form in marine environments.

• Sedimentary rocks are the only type of rock that undergo rapid cooling.

What material is used to form igneous rocks? (Select all that applies)

• magma
• sand
• gravel
• fossils
• lava

What causes igneous rocks to form?

• pressure

• cooling magma and lava

• compaction

• cementation

• heat

What causes sedimentary rocks to form? (Select all that applies)

• pressure

• cooling magma and lava

• compaction

• cementation

• heat