Matter & Energy
Forces & Motions
Earth & Space
Organisms & Environments.
Water Cycle & Weather
100

Everything that has mass and takes up space.

Matter.

100

A push or pull on an object.

Force.

100

The planet closest planet to the sun.

Mercury.

100

An animal with a backbone.

Vertebrae.

100

The process of liquid water turning into gas.

Evaporation.

200

The three states of matter.

Solid, Liquid, Gas.

200

This force causes an object to fall toward Earth.

Gravity.

200

The path one object takes around another in space.

Orbit.

200

An organism that makes its own food.

Producer.

200

The instrument used to measure air pressure. 

Barometer.

300

This process is how plants use sunlight to make their own food.

Photosynthesis.

300

The distance and object travels divided by the time it takes.

Speed.

300

The slow process that breaks rocks into smaller pieces.

Weathering.

300

A trait passed down from parents to their offspring.

Inherited traits.

300

Any form of water, like rain of snow, that falls from the sky.

Precipitation.

400

A combination of two or more substances that can be easily separated.

A mixture.

400

The force that resists motion when two surfaces rub together.

Friction.

400

It takes Earth this long to make a complete orbit around the sun.

365 days.

400

An animal that eats both plants and animals.

Omnivore.

400

Fluffy, white clouds often seen on a sunny day.

Cumulus Clouds.

500

These five forms of energy are often remembered by the acronym MELTS.

Mechanical, Electrical, Light, Thermal, and Sound.

500

A change in an object's position.

Motion.

500

Gigantic slabs of rock that makes up Earth's crust.

Tectonic plates.

500

Organisms like fungi or bacteria that break down dead material.

Decomposers.

500

The process of liquid water turning into solid.

Freezing.