Four Spheres
The Atmosphere
Planets
Earth
Stars
100

This sphere contains water

Hydrosphere

100

Weather happens in this layer

Troposphere

100

Used to be a planet in our solar system

Pluto

100

Time for Earth's revolution around the sun

365 days

100

Stars appear to be twinkling because

air (atmosphere)

200

This sphere contains animals

Biosphere

200

Meteors happen here

Mesosphere

200

First planet from the sun

Mercury

200

Time for Earth's rotation

24 hours

200

Hottest star

Blue

300
This sphere has oxygen in it

Atmosphere

300
Contains oxygen and what other element

Nitrogen

300

Eighth planet from the sun

Neptune
300

Time for the moon's orbit around the Earth

About 29 days

300

Coolest star

red

400

A bird flying in the sky is what two spheres

Biosphere and Atmosphere

400

Planes are found here

Stratosphere

400

Third planet from the sun

Earth

400

Rotation causes

Day and night

400

Closest star to Earth

Sun

500

The hottest layer of the Earth

Inner core

500

What does the ozone layer do

Protects the Earth from harmful rays from the sun

500

Fifth planet from the sun

Jupiter

500

Revolution causes

A year

500

A star explodes into a 

Supernova