Orbit
The path of an object as it revolves around another object in space
Craters
Bowl-shaped indents or cavities on the surface of a planet, moon, or asteroid that are caused by a collision with another object, such as a meteorite
Moon
A natural satellite that revolves around a planet.
Sun
The star at the center of our solar system taht supplies heat and light to Earth, it's garvity keeps the systems in orbit
Earth
a planet in our solar system that has life on it
gravity
the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
Rotation
the time it takes Earth to make one complete rotation on it's axis
axis
a line, real or imaginary, around which something spins
Compass
an instrument that shows the direction and uses a small magnet to show North, South, East and West
Shadow
A dark area caused when an object blocks light falling on a surface
sundial
an instrument showing the time by the shadow of a pointer cast by the sun onto a plate marked with the hours of the day.
day/night
caused by rotation of earth on its axis; when Earth faces the sun and is lighted or faces away from the sun and is dark