Which of the following are the three main rock types?

• Igneous

• Sedimentary

• Fossilized

• Metamorphic

Weathering is the process of:

• Breaking rock into smaller pieces

• Moving sediment to new locations

• Changing rock by heat and pressure

• Gluing sediments together

Erosion differs from weathering because erosion involves:

• Breaking rocks chemically

• The movement of sediment by wind, water, or ice

• Changing magma into crystals

• Melting rock into magma

Which process glues sediments together to form rock?

• Weathering

• Cementation

• Erosion

• Crystallization

Obsidian is an igneous rock that forms when lava:

• Cools very slowly

• Cools very quickly

• Is compacted with sediment

• Is buried under pressure

A sandstone rock most likely formed from:

• Weathering of volcanic rock

• Cemented sand-sized particles

• Cooling of magma underground

• Heat and pressure acting on limestone

Large crystals in an igneous rock indicate the magma:

• Cooled very quickly

• Cooled very slowly

• Was weathered and eroded

• Was deposited by water

Metamorphism changes rock by:

• Wind and rain

• Heat and pressure

• Melting and crystallization

• Burial and deposition

The rigid outer layer of Earth made of crust and upper mantle is the:

• Lithosphere

• Asthenosphere

• Outer core

• Biosphere

Convection currents move because:

• Rocks are too heavy

• Hot material rises, cool material sinks

• Earth’s crust pushes upward

• Crystals expand in magma