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19 Cards in this Set
- Front
- Back
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What form of heat transfer occurs in boiling water |
Convection |
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A slanted surface used to raise an object. |
Inclined Plane |
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A bar that is free to pivot around a fixed point. |
Lever |
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A winding staircase is what kind of simple machine? |
Inclined plane |
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How do insulation materials reduce heat loss |
They are poor conductors |
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How do liquids and gases transmit heat |
Convection |
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A metal spoon becomes warm due to heat transfer by the process of |
Conduction |
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How does and electric motor work |
An electromagnet spins between 2 magnets; electrical to mechanical |
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You see a fan blowing. How is it evidence of energy |
Fan blades are moving; Mechanical |
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An electric current running through a wire wrapped around an iron core would produce |
Electromagnet |
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The region around a magnet where the magnetic forces act. |
Magnetic field |
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An electric motor changes ________ to _________ energy. |
Electrical to Mechanical |
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A current carrying wire wrapped around an iron core is called an... |
Electromagnet |
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A generator changes ________ to __________ energy. |
Mechanical to Electrical |
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Where should a fulcrum be when lifting a heavy box |
Closest to the box |
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How do simple machines reduce the effort force needed to do work |
Increase distance over which effort is exerted |
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Where should the lightest child be on a seesaw when lifting a heavier child |
Closest to the end furthest from the fulcrum |
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How does a fixed pulley help lift a heavy load |
Changes the direction of the force |
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For a machine to do work what must happen? |
The object must must move |
