G1 D7 The History of the Earth

How many oceans are on the earth?

Fossils are pieces of rock that come from the eruption of a geyser.

This rock is formed from hot lava or magma that cools and hardens like a candle.

What does a geologist study?

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

The earth has 2 layers: the crust and the core.

This rock is formed when heat and pressure change igneous and sedimentary rocks into new rocks.

Dinosaurs are extinct, which means...

I study plants and animals that lived on the earth a long time ago.

Can things live below the crust in the mantle?

I am extinct but scientists believe I lived millions of years ago.

This rock is created by pieces of dirt and rock pressing down on top of one another.

What are the three most important things for geologists?

What is the outermost layer of the earth, where we live?

How many continents are on the earth?

Which one is NOT a type of volcano?