What Is Astronomy

The study of the universe is called

• physics.

• astronomy.

• chemistry.

• biology.

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The imaginary line that the Earth is spinning around is called the

• axis.

• equator.

• border.

• force field.

The spinning motion of the Earth is called

• revolution.

• axis.

• rotation.

• tilting.

The Earth's ??? is when the Earth moves in an orbit around the Sun.

• revolution.

• axis.

• rotation.

• tilting.

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A ??? is the time it takes Earth to revolve once around the Sun.

• day

• month

• hour

• year

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A ??? is the time it takes the moon to revolve around the Earth.

• day

• month

• hour

• year

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A ??? is the time it takes the Earth to rotate once on it's axis.

• day

• month

• hour

• year

Which astronomer thought that the Earth was at the center of the universe?

• Ptolemy

• Copernicus

• Galileo

• Brahe

The model of the universe that says that Earth is at the center is called the ??? model.

• heliocentric

• correct

• geocentric

• paleolithic

Which astronomer thought that the Sun was at the center of the universe?

• Ptolemy

• Copernicus

• Galileo

• Brahe