The History of the Earth

When heat and pressure change preexisting rocks into new rocks it forms metamorphic rock.

The crust is a layer of liquid, molten rock deep inside the earth.

A volcano is caused by an eruption of magma making its way to the surface of the earth.

The earth is only 100 years old.

Some volcanoes can be destructive when their lava and ash damage the land around them.

All rocks can be put into three groups: igneous, sedimentary, and metamorphic.

Hot magma or lava that cools and hardens makes igneous rock.

Pressure happens when two forces push on each other.

Fossils are the imprint of the remains of animals and plants that died long ago.

What are the three important words you should remember when thinking of geology?

Gerry the geologist studies clouds and the sky.

What do we call the land that covers the surface of the earth?

Layers of sediments (pieces of dirt/rock) pressed on top of one another form sedimentary rocks.

You can see dinosaurs at the Buffalo Zoo.

Volcanoes and geysers are earth's way of releasing heat and pressure from deep underground.

The star in this picture is marking the North Pole.

What is a geyser?

The inner core is a solid metal ball in the center of the earth.

In which layer of the earth does magma form?

The mantle is the outermost layer of the earth where we live.