Words
A representation or example of how something works. In this case, ________ show how the Earth, Moon and Sun interact.
Model
An exploding ball of burning gas held together by gravity.
Star
An event that happens when one celestial body moves into the shadow of another celestial body. Examples are solar ______ and lunar _______.
Eclipse
An ancient tool used to tell time during the day. Part of it casts a shadow onto a flat surface marked in hours. It works due to Earth's rotation.
Sundial
The collection of the Sun and the objects that orbit around it, including planets, moons, and asteroids.
Solar System
Repeated behaviors or movements that we can see and notice, like the way stars and planets move in the sky.
Observable Patterns
A burst of high energy radiation made by the sun that can travel to Earth and interfere with cell phone reception and satellite communications.
Solar Flare
A push or a pull that can cause the motion of an object to change. It has two important properties: strength and direction
A dark shape made when an object blocks light.
Shadow
An area around a star that is approximately the right distance to support liquid water on the surface of a planet.
Habitable Zone
A tool that provides evidence that the Earth is rotating.
Foucault Pendulum
When two equal forces act in opposite directions the result is that the forces are balanced and there is no motion.
Balanced Forces
A force that pulls objects toward each other. On Earth, it pulls things down toward the ground.
The path an object follows as it moves around another one. Earth moves in a circle around the sun once every 365.25 days
Earth's Orbit
A group of stars that form a recognizable shape such as the Big Dipper.
Constellations
The process of moving or changing position.
Motion
The action of the Earth turning or spinning around its center. (This causes the observable pattern of day and night cycles)
Earth's Rotation
The star around which the Earth orbits.
Sun
A model of the solar system which puts the Sun at the center and says that the planets orbit around the Sun
Heliocentric Model
When one force is stronger than the other the result is motion. (Example: we play tug of war and you pull the rope harder than I do, what type of force is this?)
Unbalance Forces