. What is the simple scale we use everyday to determine what is large and small?
-ourselves
2. What did most people assume was the center of the unchanging universe?
-earth
3. What did Galileo see on the moon with his telescope?
-it had mountains
4. What is represented by each of these following circle sizes?
1 meter =a hula hoop
1000 meters or 1 kilometer =city center
6 powers of 10 (1 x 10
6
meters) =earth
8 powers of 10 (1 x 10
8
meters) =moon
13 powers of 10 (1 x 10
13
meters) =entire solar system
5. What is a light year?
-the distance light travels in a entire year
6. How many years would traveling to the nearest star take?
-5 light years
7. What did Anton van Leeuwenhoek invent?
-microscope
8. What is one of the two particles inside the nucleus of an atom?
-protons
9. How long would the collision of two galaxies really last?
-a 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?
-blue green bacteris
12. Why are black holes called “black holes”?
-because they are black and they swallow everything