1. Distinguish the differences between science and science fiction.

2. How is the scientific method similar to discovering the rules to a game through observing how it is played by two knowledgeable players?

3. Organize the following astronomical structures according to their size, starting with the largest and ending with the smallest structure:

Virgo Supercluster
The Solar System
Milky Way Galaxy
Local Galactic Group
Solar Neighborhood

4. Why might we expect to find life outside of the habitable zone? Provide an example of a life form that exists outside of our normal conceptions of a habitable environment.

 5. Your record bicycle pace along a favorite trail is 16 mph. On a recent ride, you traveled the 25 mile route in a time of 90 minutes. What was your average speed? Did it break your record pace?

6. Why is it only possible to travel forward in time and not travel backwards in time?

7. A roller coaster with a mass of 1000 kg is shot to a speed of 30 m/s in 8 seconds. How much kinetic energy does this coaster have at the end of the 8 seconds? To receive full credit, show all of your work in the space below.

8. How much energy is required to lift a 9 kg (20 lb) bag of rice from the floor to the trunk of your car located 0.9 meters above the ground? What kind of energy does the rice have when it is sitting in your trunk? To receive full credit, show all of your work in the space below.

9. What is the mass-energy equivalent of a 0.15 kg baseball? To receive full credit, show all of your work in the space below.

10. In this module, you applied the principle of conservation of energy to understand the transfer of potential energy to kinetic energy for a skateboard on a half-pipe.

1. Provide an example from your experiences of a situation where the potential energy of an object transferred to kinetic energy and then back to potential energy.

2. Describe what happens to the total amount of energy during the situation (increase, decrease, stay the same) and explain how you know this.