Rocks Quiz

What are rocks made of?

• Molten lava

• Sand and mud

• Dirt and soil

• Microscopic living things

Which type of rock is formed when hot lava cools down?

• Sedimentary rock

• Igneous rock

• Diamond

• Metamorphic rock

How are sedimentary rocks formed?

• By the growth of microscopic living things

• By volcanic activity

• By the pressure and heat of the Earth

• By the action of wind and rain

What is the process called when rocks are broken down into sand?

• Melting

• Erosion

• Weathering

• Crystallization

Which type of rock is formed by the pressure and heat of the Earth?

• Sedimentary rock

• Igneous rock

• Coal

• Metamorphic rock

What is the main cause of cracks in rocks?

• Growth of plant roots

• Freezing and refreezing of water

• Pressure and heat from the Earth

• Erosion by wind and water

How are diamonds formed?

• By volcanic activity

• By the growth of microscopic living things

• By the pressure and heat of the Earth

• By the action of wind and rain

What is the purpose of the National Science Foundation program mentioned in the text?

• To encourage teenagers to work outdoors

• To study the formation of rocks

• To investigate soil profiles

• To conserve rocks and soil

What is the process called when rocks are broken down into soil?

• Weathering

• Erosion

• Crystallization

• Melting

What can wind do to rocks in a desert?

• Melt them

• Break them into smaller pieces

• Turn them into soil

• Change their color