Ecosystems
Earth Science
Astronomy
Chemistry
Riddles
100

What is the term called when their is rivalry between living things for resources?

Competition

100

What do we call molten rock that erupts from a volcano?

Lava

100

How many planets are in the solar system?

8 planets

100

When a liquid is changed to a solid it is called?

Freezing

100

What is full of holes but still holds water? 

A Sponge

200

What do we call the community of living organisms interacting with their environment?

Ecosystem

200

What is the name of the imaginary line that runs around the middle of the Earth?

Equator

200

Which planet is famous for its Great Red Spot?

Jupiter

200

When a solid changes to a liquid it is called?

Melting

200

What has a head and a tail but no body

coin

300

The process of changing to survive in an ecosystem is called?

Adaptation

300

What do we call the large bodies of saltwater on Earth?

Oceans

300

Which planet is named after the Roman god of beauty?

Venus

300

What gas do humans breathe in?

Oxygen

300

I have keys but can't open any doors. What am I?

Keyboard or Piano

400

An organism that eats other organisms for food is called a?

Consumer

400

What do we call the solid outer layer of the Earth? 

Crust

400

Which planet is named after the Roman god of beauty?

Venus

400

What is the smallest unit of matter called?

Atom

400

What is so delicate that saying its name breaks it

Silence

500

An organism that makes their own food is called?

Producer

500

What do you call a scientist who studies rocks?

Geologist

500

What is the name of the chocolate that also shares the name with our Galaxy?

Milky Way

500

The path that all water follows as it moves around Earth in different states is called?

The water cycle

500

The more you take, the more you leave behind. What am I? 

Footsteps