Jeopardy

1. Jeopardy Choose a category. You will be given the question. You must give the correct answer. If wrong, click the yellow icon. To return to the Jeopardy categories, click the “home” button. Click to begin.

2. Choose a point value. Choose a point value. Click here for Final Jeopardy

3. Category A Category B Category C Category D Category E 10 Point 10 Point 10 Point 10 Point 10 Point 20 Points 20 Points 20 Points 20 Points 20 Points 30 Points 30 Points 30 Points 30 Points 30 Points 40 Points 40 Points 40 Points 40 Points 40 Points 50 Points 50 Points 50 Points 50 Points 50 Points

4. Which of the following is able to convert all the thermal energy produced into useful work? nuclear power reactor gasoline engine stovetop range none of the above

5. none of the above

6. Not close!

7. Heat will transfer from a high temperature area to a low temperature area by several different methods. The heat transferred by an electric stovetop coil to the teakettle is an example of transfer by convection combustion radiation conduction

8. conduction

9. If you thought that you were wrong, you are right!

10. Energy is not destroyed, but rather converted from one form to another. Describe the conversion of energy in the following process: A power reactor utilizes the process of uranium fission to create electricity. nuclear to electrical nuclear to thermal to electrical nuclear to mechanical to thermal to electrical nuclear to thermal to mechanical to electrical

11. nuclear to thermal to electrical

12. STOP!

13. Sound waves are examples of what category of wave? • longitudinal • B. transverse • C. mechanical • both A and C

15. both A and C

16. 60 g of KCLO3 is added to a beaker of boiling water until no more will dissolve. As the solution cools to 30 degrees, 50 grams of KCLO3 stays in solution. 50 grams of KCLO3 comes out of solution. 10 grams of KCLO3 comes out of solution. KCLO3 will crystallize at this temperature. See Table

18. 50 grams of KCLO3 comes out of solution..

19. Laura navigates her kayak down a stretch of the Neuse River in 15 minutes. Her rate of speed over the course of the trip is 8 km/hr. How far has she traveled? 0.12 km 1.2 km 2 km 120 km

21. 2 km

22. Sound waves cause molecules to vibrate and bump into one another. For sound to travel, there must be molecules which can be made to vibrate. The closer together the molecules are, the faster the sound is able to travel. This explains why Sound travels faster in steel than in water. Sound travels faster in outer space than in air. Sound travels faster in air than in water. Sound travels faster in water than in steel.

24. Sound travels faster in steel than in water.

25. A submarine uses sonar to measure the distance between itself and other underwater objects. It sends out a sound wave, then records the echo that is reflected back by an underwater object. The speed of sound in water is about 1500 m/s. How far away is an object whose echo takes 5 seconds to return? 300 meters 7500 meters 3750 meters 15000 meters

27. 7500 meters

28. Which of the following examples represents potential energy but not kinetic energy? An avalanche A coiled spring A hot air balloon in flight The pistons in a working engine

30. A coiled spring

31. Find the amount of work done when 30 N of force is used to lift a box 400 cm. 7.5 Joules 13.3 Joules 120 Joules 12000 Joules

33. 120 Joules

34. When two light nuclei are forced to fuse, they form a heavier nucleus. During this process, a large amount of energy is produced. When the process is conducted at room temperatures and standard pressures, it is called cold fusion. In 1989, Stanley Pons and Martin Fleischmann announced at a press conference that they has produced cold fusion one time in their laboratory. All over the world, scientists rushed to their labs to try and duplicate the experiment. In the end, no one was successful. Pons and Fleischmann were harshly criticized in the science community for their premature announcement. What would have been the appropriate tool of communication for Pons and Fleischmann to share how they performed the experiment and the results they achieved? newspaper and television high school textbooks and workbooks scientific journals a podcast

35. scientific journals

36. Too bad!

37. Deuterium (H-2) is a common product of the fusion process. Which of the following atoms could undergo fusion to become deuterium? Li and H He and H H and H H and a neutron

39. H and a neutron

40. A 12 N force is required to move a box 6 meters across a gravel driveway. How much work has been done? exactly 72 J exactly 2 J more than 72 J between 2 and 72 J

42. more than 72 J

43. The speed of an object increases 12 m/s over 3 seconds. What is its acceleration? 9 m/s2 4 m/s2 3 m/s2 36 m/s2

45. 4 m/s2

46. Tammy's room contains a lamp, a hair dryer, a radio and a TV. She uses an ohmmeter to determine that the overall resistance of the circuit increases as she plugs each appliance in. What kind of wiring is the circuitry in Tammy's house? series parallel mixed direct

48. series

49. How is the electron cloud model an improvement on Niels Bohr's model of the atom? The electron cloud model accounts for the location of the nucleus. The electron cloud model assigns electrons to orbital areas, rather than fixed orbits. The electron cloud model assigns electrons to fixed orbits, rather than orbital areas. The electron cloud model accounts for the mass and density of the nucleus.