History of earth

Fossils

100

What is a fossil? 

An imprint of a plant or animal, can also be a bone. 

200

What is the fossil record? 

A record of all the fossils that have been found made into a timeline

300

What is a paleontologist? 

a scientist who studies life from long ago 

400

What is a trilobite? 

An animal that lived long ago- almost 550 million years ago 

500

What was one of the reasons why scientists think dinosaurs became extinct 

a meteor, a volcanic erruption 

3 types of rocks

100

What are the three types of rocks? 

Igneous, Sedimentary and Metamorphic

200

How are igneous rocks formed? 

When magma cools and gets hard 

300

How are sedimentary rocks formed? 

When layers and layers of sediment have a lot of pressure 

400

How do metamorphic rocks form? 

When a lot of heat and pressure change a sedimentary or igneous rock

500

Why are heat pressure and time important to forming rocks? 

Because they all need one to go through changes 

Earth inside out

100

What is the outermost layer of the earth? 

Crust 

200

WHat is the inner most layer of earth 

inner core

300

Why is the inner core solid? 

because of all the pressure

400

What is a geyser? 

When water and steam shoot out from the earth

500

What is lava called when it is underground? 

magma

Earth

100

What planet do we live on? 

Earth

200

What do you call the water on earth?

Oceans 

300

What do you call land on earth 

continents 

400

What state do we live in? 

California 

500

What continent do we live on? 

North America