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5 Cards in this Set
- Front
- Back
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Inertia
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The property of matter by which it retains its state of rest or its velocity along a straight line so long as it is not acted upon by an external force.
Example: a car while it is coasting down a hill |
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Ohm
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The SI unit of electrical resistance
Example: Dimmer Switch- as you turn it up, the light brightens, as you turn it down the light darkens |
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British Thermal Unit (Btu)
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A traditional unit of energy equal to about 1055 joules. It is approximately the amount of energy needed to heat one pound of water by one degree Fahrenheit.
Example: also known as heat capacity |
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Heliostat
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An apparatus containing a movable or driven mirror, used to reflect sunlight in a fixed direction.
Example: sunlight reflector |
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Turbine
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A turbine is a rotary mechanical device that extracts energy from a fluid flow and converts it into useful work.
Example: like a fan |
