ET: Components of the Universe: Moons Asteroids Meteors & Comets

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

• Nebula, star, galaxy, planet

• Planet, star, galaxy, nebula

• Galaxy, nebula, star, planet

Tags

112.20.b.8.A

Reorder the following in order from largest to smallest.

• Galaxy

• Planet

• Nebula

• Star

Tags

112.20.b.8.A

Correctly label the diagram to represent the relationship between galaxies, stars, and the universe?

a

b

c

Galaxies

Stars

Universe

Tags

112.20.b.8.A

Which of the following statements is the best description of a galaxy?

• 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 group of billions of stars, dust, and many other types of objects held together by a gravitational attraction

• A collection of dust and gases that forms stars or results from dying stars

Tags

112.20.b.8.A

From the Earth, the sun appears to be brigher 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

• The sun is the only yellow star in the universe

Tags

112.20.b.8.A

The life cycle of a star begins in a ​ (a)  

• nebula
• wormhole
• black hole
• supernova

Tags

112.20.b.8.A

Scientists observe a large, rocky, irregularly shaped object orbiting the sun. This object would best be classified as -

• a nebula

• an asteroid

• a comet

• a star

Tags

112.20.b.8.A

Using the Hubble Space Telescope, scientists observe a large sphere of plasma. The object has a density and temperature great enough to cause a nuclear reaction at its core. This object would best be classified as a -

• star

• galaxy

• nebula

• comet

Tags

112.20.b.8.A

Which of the following lists places the celestial objects in order from smallest to largest?

• Galaxy, solar system, universe

• Universe, galaxy, solar system

• Solar system, galaxy, universe

• Universe, solar system, galaxy

Tags

112.20.b.8.A

Reorder the following celestial bodies in order from smallest to largest.

• Planet

• Galaxy

• Universe

• Solar system

Tags

112.20.b.8.A