Solar System and Stars

​The Solar System

​Vocabulary Review

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​Solar System

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​The collection of eight planets and their moons in orbit around the sun.

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​The star at the center of the solar system.

​Sun

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A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction.

​Galaxy

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​A large natural object that orbits or travels around stars.

​Planet

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​Any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources.

​Star

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​POP QUIZ!

Multiple Choice

The collection of eight planets and their moons in orbit around the sun is known as the...

• Solar System

• Milky way

• Universe

• Galaxy

Multiple Choice

A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction is considered a...

• Milk way

• Asteroid

• Sun

• Galaxy

Multiple Choice

The star at the center of the solar system is called the...

• Super Star

• Sun

• Moon

• Asteroid

Multiple Choice

​Any massive self-luminous celestial body of gas that shines by radiation derived from its internal energy sources is called a...

• Sun

• Planet

• Star

• Asteroid

Multiple Choice

A large natural object that orbits or travels around stars is called a...

• Planet

• Asteroid

• Rock

• Moon