CONDUCTION
Conduction is the transfer of energy through solid matter from particle to particle. Heat is conducted through a solid material much the same way electricity is. Conduction is slowed by insulation. (Direct Touch)
CONVECTION
Convection is the transfer of heat energy through a gas or liquid by movement of currents. Heat is carried by the fluid. When warm air comes out of a register, it rises. This action is called thermal buoyancy. As it cools, it falls. This rising and falling movement is called convection current. Convection can be interrupted by a physical barrier. (Movement of Hot Air / Liquid)
RADIATION
Radiation is electromagnetic waves which directly transport heat energy through space. Sunlight is radiated through space to our planet without the aid of fluids or solids. Through radiation, the sun transfers heat through 93 million miles of empty space! Heat energy transferred through radiation can be interrupted by a material which reflects it. (Heat through waves)
Also Check Out: Bill Nye - Heat Transfer Video
Here are some great links for practice on the Science ISAT Examination for 2012.
Note - Your student / You will be taking the NWEA Examination on 2/6/2012. This will show Fall to Winter Growth. The normative data for 2011 shows a general goal of around 210 for science. However, your score might be different based on what you got in the fall.
General ISAT Practice
2011 ISAT Science Questions
Information About NWEA Science
The following answers are to be used with the practice packet given on Friday 1-27-2012
The purpose of giving the answer key is so you can identify which problems you had an issue with. Please circle the problems that you had difficulty with so we can review on 1-30-2012.
Answers:
1.B
2.D
3.C
4.A
5.A
6.C
7.B
8.C
9.D
10. D
11. A
12. A
13. B
14. C
15. C
16. D
17. C
18. B
19. B
20. A
21. A
22. A
23. D
24. B
25. D
26. C
27. C
28. B
29. C
30. A
31. D
32. C
33. B
34. C
35. B
36. B
37. C
38. B
39. C
40. B
41. C
42. C
43. A
44. A
45. A
46. C
47. B
48. C
