Matter & Its Interactions
Ecosystems & Food Webs
Earth & Space
Forces & Motion
Scientific Practices
100

This is anything that has mass and takes up space.

What is matter?

100

Organisms that make their own food through photosynthesis.

What are producers?

100

The star at the center of our solar system.

What is the Sun?

100

A push or a pull that causes an object to move.

What is force?

100

The first step of the scientific method.

What is asking a question?

200

Matter exists in these three common states.

What are solid, liquid, and gas?

200

An animal that only eats plants.

What is a herbivore?

200

The planet known as the "Red Planet."

What is Mars?

200

This scientist developed the three laws of motion.

Who is Isaac Newton?

200

A testable statement or prediction.

What is a hypothesis?

300

The process where a liquid changes into a gas.

What is evaporation?

300

The role an organism plays in its ecosystem.

What is a niche?

300

The continuous movement of water through evaporation, condensation, and precipitation.

What is the water cycle?

300

The force that slows down moving objects when they touch each other.

What is friction?

300

The type of data that includes numbers and measurements.

What is quantitative data?

400

When two substances combine to form a new substance with different properties.

What is a chemical reaction?

400

A non-living part of an ecosystem that affects living things.

What is an abiotic factor?

400

The force that keeps planets in orbit around the Sun.

What is gravity?

400

When an object moves at a steady speed without speeding up or slowing down.

What is constant motion?

400

A variable that is changed on purpose in an experiment.

What is the independent variable?

500

The amount of space an object takes up.

What is volume?

500

The process where dead organisms are broken down and nutrients return to the soil.

What is decomposition?

500

The Earth's outermost layer.

What is the crust?

500

The force that pulls objects toward the center of the Earth.

What is gravity?

500

A conclusion based on observations and evidence.

What is an inference?