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20 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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The region around a magnet where the magnetic forces act |
Magnetic Field |
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An electric motor changes__________ to__________ |
Electric energy to mechanical energy |
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A current carrying wire wrapped around an iron core |
Electromagnet |
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A generator changes__________ to_________ |
Mechanical energy to electrical energy |
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Where should a fulcrum be when lifting a heavy box? |
Near the load |
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How do simple machines reduce the effort force needed to do work? |
By increasing the distance that the force is applied |
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Where should the lightest child be on a seesaw when lifting a heavier child? |
Away from the fulcrum |
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How does a fixed pulley help lift a heavy load? |
Changes the direction |
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For a machine to do work, what must happen? |
The object must move |
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How do insulation materials reduce heat loss? |
Keeps the heat in; 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 an electric motor work? |
Contains an electromagnet that rotates between the poles of a magnet. |
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You see a fan blowing how is it evidence of energy? |
The blades of the fan are moving |
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An electric current running through a wire wrapped around an iron core would produce |
Electromagnet |
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Explain how a generator works |
Water flows through the turbine changes mechanical energy into electrical energy. |
