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- 1. Multiple Choice
The universe is made up of a wide variety of components. Which of the following lists places these components of the universe in order from largest to smallest?
Planet, star, nebula, galaxy
Galaxy, nebula, star, planet
Planet, star, galaxy, nebula
- 2. Multiple Choice
Which of the following statements is the best description of a galaxy?
A group of billions of stars, dust, and many other types of objects held together by a gravitational attraction
A large object that orbits a star and does not emit light
A sphere of matter with a density and temperature great enough to cause a nuclear reaction at its center
A collection of dust and gases that forms stars or results from dying stars
- 3. Multiple Choice
From the Earth, the sun appears to be brighter than all of the other stars. Why does the sun appear brighter than all other stars in the universe?
The sun is the star that has the highest temperature.
The sun is the largest star in the universe.
The sun is the star that is closest to the Earth.
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