🪨 Rocks & Minerals
🌋 Volcanoes
🌎 Earth Facts
đź’Ž Gemstones
⛏️ Fossils & Layers
100

This soft mineral is used in pencils.

graphite

100

Hot melted rock beneath Earth’s surface is called this.

magma

100

This is the name of the layer we live on.

crust

100

This red gemstone shares its name with a fruit.

ruby

100

Preserved remains of ancient plants or animals are called these.

fossils

200

This rock forms from cooled lava or magma.

igneous rock

200

This famous volcano destroyed Pompeii in A.D. 79.

Mount Vesuvius

200

Earth is divided into large moving pieces called these.

tectonic plates

200

Diamonds are made mostly of this element.

carbon

200

Scientists who study fossils are called this.

paleontologists

300

This mineral ranks 10 on the Mohs hardness scale.

diamond

300

Lava flowing from a volcano eventually cools into this type of rock.

igneous rock

300

The shaking caused by movement of Earth’s crust is called this.

an earthquake 

300

Emeralds are usually this color.

green

300

Older rock layers are usually found in this position compared to younger layers.

below them

400

This sedimentary rock is formed mainly from sand.

sandstone
400

The opening at the top of a volcano is called this.

crater

400

This scientist developed the theory of continental drift.

Alfred Wegener

400

This blue gemstone shares its name with September’s birthstone.

sapphire
400

Fossils are most commonly found in this type of rock.

sedimentary rock

500

Heat and pressure can change rock into this type.

metamorphic rock

500

A volcano that is not currently active but may erupt again is called this.

dormant

500

The supercontinent that existed millions of years ago had this name.

Pangaea

500

This gemstone is formed inside oysters.

pearl

500

The study of Earth’s rocks, layers, and history is called this.

geology