2-8+Cosmic+Voyage

1. What is the simple scale we use everyday to determine what is large and small? We use ourselves to determine what is large and small.

2. What did most people assume was the center of the unchanging universe? People thought the Earth was the center of the universe,

3. What did Galileo see on the moon with his telescope? Galileo saw mountians on the moon,

4. What is represented by each of these following circle sizes? 1 meter = the acrobats' ring 1000 meters or 1 kilometer =The city's center 6 powers of 10 (1 x 10 6 meters) =Europe, central Germany, and Italy all the way to the Balkin Sea 8 powers of 10 (1 x 10 8 meters) =out around the earth and moon past human travel 13 powers of 10 (1 x 10 13 meters) =The entire Solar System comes into veiw

5. What is a light year? The distance light travles in an entire year

6. How many years would traveling to the nearest star take? 5 light years away

7. What did Anton van Leeuwenhoek invent? Anton van Leeuwenhoek invetnted the early microscope

8. What is one of the two particles inside the nucleus of an atom? Protons and Neutrons

9. How long would the collision of two galaxies really last? 1 billion years

10. What is the name for exploding stars? Super Nova

11. What is the bacteria that is thought to have first produced oxygen called? Bluegreen bacteria

12. Why are black holes called “black holes”? Black holes got their name because when they form their gravitational pull is so strong that not even light can escape.