Earth's Systems
Solar System
Ecosystems
Properties of Matter
Earth's Water
100

This part of Earth includes all bacteria and has mammals from smallest to largest.

What is the biosphere?

100

This planet has a very peculiar pattern and is the 6th planet from the sun. It is known for having many rings.

What is Saturn?

100

This sea creature has eight arms and is known for squirting ink to escape from predators.

What is an octopus?

100

This is the term used to describe how well a substance can dissolve in a liquid.

What is solubility? 

100

This process includes water moving from Earth's surface to the clouds and back down again.

What is the water cycle?

200

This sphere includes oceans, rivers, lakes, and also has all frozen water.

What is the hydrosphere?

200

This planet is very hot and is the 4th planet from the sun. It is called the Red Planet.

What is Mars?

200

This area is a large amount of land or water with specific climate, animals, and plants.

What is a biome?

200

This type of change results in a new substance being formed, often involving reactions like rusting.

What is a chemical change?

200

This process happens when water turns into vapor, often a result of heat energy.

What is evaporation?

300

This layer protects life on Earth by absorbing most of the suns harmful ultraviolet radiation.

What is the atmosphere?

300

This planet rotates on a tilted axis unlike other planets. It's blue to the naked eye, and is a gas giant.

What is Uranus?

300

This on-going connection in an ecosystem is a set of interconnected food chains.

What is a food web?

300

Breaking glass, shredding paper, and chopping wood are all examples of this type of change.

What is a physical change?

300

These huge, slow-moving masses of ice and snow cover about 10% of Earth's land area, and contain 69% of Earth's freshwater.

What are glaciers?

400

These two systems interact when heavy rain from the atmosphere causes rivers to overflow and change the shape of the land.

What are the biosphere and hydrosphere?

400
The sun is mostly made of these two gasses.

What are helium and hydrogen?

400

This continent's biomes include deserts, grasslands, tropical and subtropical forests, woodlands, and temperate forests. It is completely surrounded by water, specifically the Indian Ocean.

What is Australia?

400

This is formed when two or more components are combined and can still be separated easily, like trail mix.

What is a mixture?

400

This kind of water doesn't have much salt and only makes up 2.5% of the water on Earth.

What is freshwater?