Unit 3 Benchmark Review HMH

Together, a star and all the planets and other objects orbiting it form a(n) ___________

• Asteroid

• Comet

• Solar System

• Galaxy

Tags

NGSS.MS-ESS1-2

A Chunk of rock or iron that orbits the sun is called a(n) _______

• Asteroid

• Comet

• Galaxy

• Star

Tags

NGSS.MS-ESS1-3

A huge ball of very hot, glowing gases in space that can produce its own heat and light is called a(n) ____________

• Asteroid

• Comet

• Galaxy

• Star

A group of solar systems that are held together by gravity and classified by shape is called a(n) _________

• Comet

• Solar System

• Galaxy

• Asteroid

Tags

NGSS.MS-ESS1-2

The picture shows an example of a(n) _________

• Asteroid

• Galaxy

• Star

• Comet

Scientist use models to represent or explain things in the natural world. Why are models useful for the study of the solar system?

• because models cannot be proven wrong

• because models are always accepted by all scientists

• because models describe the way things actually are

• because models can be used to describe how things work

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

NGSS.MS-ESS1-1

The illustration shows several planets orbiting a star.

What type of group is the figure illustrating?

• Constellation

• Galaxy System

• Solar System

• Universe

Tags

NGSS.MS-ESS1-2

NGSS.MS-ESS1-3

Galaxies are composed of many different objects. What kind of objects make up most of the visible matter in a galaxy?

• Asteroids

• Dust

• Planets

• Starts

Astronomers use the term brightness to describe how much light a star produces, not how bright a star appears from Earth. The diagram below compares the size, temperature, and brightness of some stars that can be seen from Earth.

Which of these stars produces the most light?

• Betelgeuse

• Sun

• Proxima Centauri

• Vega

Some elliptical galaxies appear to be perfect spheres. How are the stars distributed within this kind of galaxy?

• The stars are evenly distributed through the galaxy.

• The center is very dense with many stars, and density decreases farther out.

• Most of the stars are near the outside of the sphere, with dust clouds in the center.

• The stars are spread throughout the sphere in bands that look like the arms of spiral galaxies.