9 Weeks Test (Solar System)

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Define an Astronomical Unit

• The distance used to measure on Earth
• The distance used to measure in Space
• The distance used to measure on the Moon
• The distance used to measure Light Years

Define Astronomy

• Science which deal with celestial objects, space, and the physical universe as a whole
• Science of looking at the stars
• Science about our Earth, its features, and living creatures
• Science that deals with genes, chromosomes, and mutations

Define Axis

• The circular movement of an object about a point in space.
• The action by a celestial body in an orbit or elliptical course
• The line about which an object rotates.
• The Movement of an object in a circle.

Define Rotation

• The circular movement of an object about a point in space.
• The action by a celestial body in an orbit or elliptical course
• The line about which an object rotates.
• The Movement of an object in a circle.

Define Revolution

• The circular movement of an object about a point in space.
• The action by a celestial body in an orbit or elliptical course
• The line about which an object rotates.
• The Movement of an object in a circle.

Define Solar Eclipse

• A natural object or spacecraft orbiting a larger astronomical body.
• When the sun is obscured by the moon.
• When the moon passes directly behind the Earth and into its shadow.
• The movement of the Moon

Define Lunar Eclipse

• A natural object or spacecraft orbiting a larger astronomical body.
• When the sun is obscured by the moon.
• When the moon passes directly behind the Earth and into its shadow.
• The movement of the Moon

Define Satellite

• A natural object or spacecraft orbiting a larger astronomical body.
• Objects that rotate around the sun
• Huge collection of gas, dust, and billions of stars
• The movement of the Moon

Define Asteroid

• The action by a celestial body in an orbit or elliptical course
• Gravity moving objects in Space
• The distance used to measure in Space.
• A piece of rock or dust that moves through space.