Understanding Rocks and Minerals

What are rocks primarily made of?

• Air

• Plants

• Water

• Minerals

Which mineral is used to make jewelry and is also a hard substance?

• Clay

• Coal

• Salt

• Diamond

What type of rock is formed from magma or lava?

• Igneous rock

• Sedimentary rock

• Metamorphic rock

• Crystal rock

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

• Weathering

• Filtration

• Erosion

• Condensation

What is the Earth's top layer called?

• Mantle

• Crust

• Surface

• Core

Which type of rock is formed from compressed sediments?

• Metamorphic rock

• Igneous rock

• Boulder

• Sedimentary rock

What can cause rocks to change their shape, size, color, and texture over time?

• Artificial light

• Human thoughts

• Natural forces

• Space elements

What is the inner core of the Earth primarily made of?

• Iron

• Silver

• Gold

• Copper

Which rock type can be changed by heat and pressure to form marble?

• Limestone

• Sandstone

• Granite

• Obsidian

What is the best type of soil for growing plants?

• Loam

• Sand

• Clay

• Pebbles