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5. Back What are the 3 mechanisms of heat transfer? Ques. #1 Convection, conduction, and radiation Ans.

6. By which method is heat transferred in solids. Back Ques. #2 Ans. Conduction

7. What term describes radiation given off by the earth? Back Ques. #3 Ans. Terrestrial radiation or infra red

8. What kind of electromagnetic energy accounts for most (90%) of the sun’s output? Back Ques. #4 Ans. Visible light

9. What kind of heat transfer is caused by density differences? Back Ques. #5 Ans. Convection

10. What method of heat transfer is illustrated in this picture? Back Ques. #6 Convection Ans.

11. In this closed system which 2 locations could be both a heat source and a heat sink? Back Ques. #7 Ans. Locations A and D

12. Which is the only method of heat transfer that can operate in the vacuum of space? Back Ques. #8 Ans. Radiation

13. Back Ques. #9 Ans. Dark (black) and rough What kind of surface is the best absorber of electromagnetic energy (give 2 characteristics).

14. As compared to the wavelengths of electromagnetic energy we receive from the sun, the wavelengths reradiated by the earth are........... Ques. #10 Back Ans. Longer

15. Name any 3 greenhouse gases. Back Ques. #11 Ans. Methane, water vapor, carbon dioxide, CFC’s

16. What is a synonym for insolation? Back Ques. #12 Ans. Sunlight

17. If all other factors are the same (mass, surface area, etc) which of the following materials will cool fastest: lead - basalt - iron - copper Back Ques. #13 Ans. lead (smallest specific heat)

18. Define temperature Back Ques. #14 Ans. The average kinetic energy of the atoms or molecules of a substance.

19. What units are used to measure heat. Back Ques. #15 Ans. Joules

20. Which method of heat transfer is shown in the illustration? Back Ques. #16 Ans. Conduction

21. By what method is heat transferred from location A to B? Back Ques. #17 Ans. Conduction

22. What are the three things that can happen to electromagnetic waves when they strike a surface? Back Ques. #18 Ans. Reflected, refracted, or absorbed

23. In a closed system what must be true of the energy lost by the heat source? Back Ques. #19 Ans. It is equal to the heat gained by the sink.

24. What is happening to the H 2 O between points B and C on the graph? Back Ques. #20 Ans. It is melting

25. Explain why the rate of temperature increase of the H 2 O is faster (slope steeper) between points A and B than between points C and D. Back Ques. #21 Ans. Ice has a smaller specific heat than liquid water and will heat faster.

26. If the amount of energy the earth receives is equal to the amount that is reradiated then the earth is in a state of....... Back Ques. #22 Ans. Radiative balance or dynamic equilibrium

27. Between which 2 points on the graph does the H2O gain the most energy? Back Ques. #23 Ans. Points D and E

28. Burning fossil fuels contributes to the greenhouse effect. Name 3 fossil fuels. Back Ques. #24 Ans. Coal, oil, and natural gas (methane)

29. Based on the graph, what is the rate of temperature increase for lead? Back Ques. #25 Ans. 2°C/min

30. Which material is a heat source for the basalt? Back Ques. #26 Ans. Iron

31. When the light is turned off which cup will cool fastest? Back Ques. #27 Ans. The black cup

32. Which is the highest temperature, 51°C, 108°F, or 320°K ? Back Ques. #28 Ans. 51°C

33. Assuming that this is a closed system, what will be the temperature of the water when it reaches equilibrium ? Back Ques. #29 Ans. 50°C (80 + 20 = 100 ÷ 2 = 50)

34. By which process is energy transferred from the sun to Jupiter? Back Ques. #30 Ans. Radiation (through space)

35. YOU’RE A WINNER! Methane and carbon dioxide are greenhouse gases.