Sun Quiz Review

4. The Sun is made up of 27% __________.
6. During Copernicus's time, most people believed that _____ was at the center of the Universe.
8. Albert Einstein called __________ the Father of Modern Physics, which is the study of why objects behave the way they do.
11. The idea that Earth is at the center of the Universe was based on the writings of the Egyptian astronomer __________.
13. After observing a swinging chandelier, Galileo began to conduct experiments related to a force we now call __________.
15. The Sun is at the center of our _____ system.
17. Nicholas __________ is called the Father of Astronomy, because he was the first to explain the movement of the planets and the stars in a way that made sense.
18. The Sun is the closest _____ to Earth.
19. The sun is our primary source of _____ and light.
20. Astronomers believe the Sun is 4.7 __________ years old.
22. According to Copernicus's new theory, the planets (including Earth) all revolve around the _____.

1. When Galileo was in school, his teachers nicknamed him "the __________."
2. The Sun's energy is generated by __________ fusion. This reaction releases an enormous amount of energy.
3. Without the Sun, _____ could not exist on Earth.
5. _____is the latin word for Sun.
7. In both Greek and Roman mythology, __________ is the god of the Sun.
9. We consider Galileo to be one of the first modern scientists, because he tested his ideas by performing __________.
10. Astronomers believe that the Sun began to form 9 billion years after the _____ _____.
12. The Sun is made up of about 71% __________.
14. Galileo spent much of his time trying to figure out how things _____.
16. The sun is about 93 __________ miles from Earth.
18. Our word "Sun" comes from the Old English word _____.
21. Traveling at the speed of _____ (186,000 miles per second), light takes 8 minutes and 19 seconds to travel from the Sun to Earth.