Force, Motion, and Energy
Earth and Space
Ecosystem
100

An object that attracts iron and steel

What is a Magnet?

100

The star that is at the center of our solar system

What is the Sun?

100

A place where an animal or plant lives

What is a Habitat?

200

A broken or incomplete electrical path

What is an Open Circuit?

200

A large system of stars, dust, and gas

What is a Galaxy?

200

Living things compete for resources in order to survive

What is Competition?
300

A nonrenewable resource formed from the remains of prehistoric plants and animals

What is a Fossil Fuel?
300

The 3rd planet from the Sun

What is the Earth?

300

One organism benefits while the other is harmed

What is Parasitism?

400

The force that resists motion when 2 surfaces rub against each other

What is Friction?
400

A huge ball of gases in space that gives off heat and light

What is a Star?

400

A relationship in which both organisms benefit

What is Mutualism?

500

The bending of light rays as they pass from one substance to another

What is Refraction?

500

The different appearances of the moon caused by the moon's orbit around the Earth

What is the Lunar Cycle?

500

The role a population has within its habitat

What is a Niche?

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