Earth Science
This is the third planet from the Sun.
Earth
This is the basic unit of life.
Cell
This force pulls objects toward the center of Earth.
Gravity
This star is at the center of our solar system.
Sun
The tool used to measure temperature.
Thermometer
The solid outer layer of Earth is called this.
Crust
Mammals breathe using these organs.
Lungs
This state of matter has a definite shape and volume.
Solid
The moon’s shape changes in the sky because of these.
Moon Phases
The three states of matter are solid, liquid, and this.
Gas
This gas makes up most of Earth’s atmosphere.
Nitrogen
Plants use this process to make food from sunlight.
Photosynthesis
A push or pull on an object is called this.
Force
The Milky Way is an example of this type of space object.
Galaxy
This tool makes objects look larger using lenses.
Microscope
Rocks formed from cooled lava are called this.
Igneous Rocks
The human skeleton is made up of about this many bones.
206
The bending of light as it passes through water or glass is called this.
Refraction
A huge ball of ice and dust that orbits the Sun is called this.
Comet
An experiment should only change one of these at a time.
Variable
The process by which water changes from a liquid to a gas.
Evaporation
Animals that can live both on land and in water are called this.
Amphibians
The smallest particle of an element is called this.
Atom
This is the largest planet in our solar system.
Jupiter
This is the first step in the scientific method.
Asking a question