Unit 3 Solar System Extra Credit

Front

Together a star, and all the planets and other objects orbiting it form _________________

Back

solar system

Front

Chunk of rock or iron that is less than 1,000 km in diameter and that orbits the sun is called _______________.

Back

asteroid

Front

Huge ball of very hot, glowing gases in space that can produce its own heat and light is called ______________.

Back

star

Front

The picture in the background shows an example of what? Options: star, meteoroid, comet, planet

Back

comet

Front

The path Earth takes around the sun is called what?

Back

orbit

Front

It takes Earth 24 hours to ______________ on its axis.

Back

rotate

Front

Earth moves around the sun, has nearly a round shape, and has cleared its path of most debris, so it is called a ________________.

Back

planet

Front

Which planet, in our solar system, is most similar to Planet Z, which is very large, has a thick atmosphere, and has a low density? Options: Mars, Earth, Mercury, Saturn

Back

Saturn

Front

Why are models useful for the study of the solar system?

Back

Models can be used to describe how things work.

Front

What kind of space object was Galileo observing when he saw four objects in line with Jupiter that moved from night to night and sometimes disappeared in front of or behind the planet?

Back

moons