Space Unit

The sun and group of objects that surround it

• Period of Roatation

• Astronomical Unit

• Asteroids

• Solar System

An instrument invented in the 1600's that led to the discovery of additional planets and other objects..

• Telescope

• Globe

• Microscope

• Probe

The largest object in the Solar System that makes up 99% of the mass of the Solar System.

• Moon

• Jupiter

• Sun

• Asteroid Belt

Millions of rocky objects that orbit the sun in a belt that are usually not spherical

• Comets

• Asteroids

• Meteors

• Planets

These are mad of gas, dust, and ice and move around the sun in an oval shaped orbit

• Asteroids

• Comets

• Meteors

• Meteorites

A small piece of material that burns up as it enters the atmosphere; also called a shooting star

• Meteorite

• Comet

• Meteor

• Meteorite

A meteor that impact a planet or moon

• Meteorite

• Meteor

• Comet

• Asteroid

The average distance between the Earth and the Sun

• Mile

• Astronomical Unit

• Light year

• Yard

The time it takes an object to complete one spin on its axis

• Period of rotation

• Period of revolation

• A year

• A month

The time it takes for an object to travel once around the sun

• Period of rotation

• Period of revolution

• A day

• A month