I need someone smart in science. Part 7.?
51.) An arrangement of pulleys designed to reduce the effort force is called a... A.) block and tackle B.) fixed pulley C.) inclined plane and a wedge D.) screw and an inclined plane
52.) Two simple machines that are part of a bicycle are a(n)... A.) gear and a wheel and axle B.) inclined plane and a lever C.) inclined plane and a wedge D.) screw and an inclined plane
53.) A material that reduces the flow of heat by conduction, conversation, and radiation is... A.) a conductor B.) condensation C.) an insulator D.) solar collector
54.) All of the following are good conductors of heat EXCEPT... A.) air B.) aluminum C.) copper D.) silver
55.) The transfer of energy that does NOT require matter is... A.) combustion B.) radiation C.) conduction D.) convection
56.) Energy from the Sun travels to Earth as... A.) chemical energy B.) combustion C.) radiant energy D.) mechanical energy
51. B
52. A
53. C
54. A
55. B
56. B/C - not 100 % sure 
Pokemon Silver/Gold Walkthrough P15