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Physics > March > Flashcards

March Flashcards

1
Q

Heat engine

A

A device that converts thermal energy into mechanical energy

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2
Q

Liquid

A

A state of matter that no has a definite shape but has a definite volume

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3
Q

Evaporate

A

Turn a liquid into a gas

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4
Q

Specific heat

A

The amount of energy required to raise the temperature of 1 gram of a substance by 1 degree Celsius

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5
Q

Freezing Point of Water

A

32 F,
0 C,
273 K

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6
Q

Temperature

A

A measure of the average energy of motion of the particles of a substance.

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7
Q

Radiation

A

The transfer of energy by electromagnetic waves

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8
Q

Solid

A

A state of matter that has a definite shape and a definite volume

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9
Q

Gas

A

A state of matter that no has a definite shape or a definite volume

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10
Q

Boiling point of water

A

212 F,
100 C,
373 K

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11
Q

Thermal expansion

A

An increase in the size of a substance when the temperature is increased

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12
Q

Pressure

A

The force pushing on a surface divided by the area of that surface

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13
Q

Heat

A

The energy transferred between objects that are at different temperatures

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14
Q

Viscosity

A

The friction held between layers of a fluid.

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15
Q

Heat of vaporization

A

The energy a substance must absorb in order to change from a liquid to a gas

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16
Q

Convection

A

The transfer of thermal energy by the circulation or movement of a liquid or gas

17
Q

Heat of fusion

A

The energy required to change a substance from solid to liquid at its melting point

18
Q

Condensate

A

the process where a vapor (or gas) turns into a liquid

19
Q

Thermal equilibrium

A

The point at which two objects that are touching reach the same temperature

20
Q

Buoyancy

A

the ability or tendency to float in water or air or some other fluid.

21
Q

Entropy

A

A measure of disorder or randomness.

22
Q

4180 J/kg.K

A

Specific heat of water

23
Q

Adhesive force

A

An attractive force between molecules of two different substances.

24
Q

First law of thermodynamics

A

Energy cannot be created or destroyed

25
Q

Conduction

A

The direct transfer of heat from one substance to another substance that it is touching.

26
Q

Second law of thermodynamics

A

The entropy of the universe tends to increase.

27
Q

Cohesive force

A

An attractive force between molecules of the same substance

28
Q

Surface tension

A

The force that acts on the surface of a liquid and that tends to minimize the area of the surface.

29
Q

Thermal energy

A

The total potential and kinetic energy of the particles in an object.

30
Q

Plasma

A

Matter consisting of positively and negatively charged particles

Physics (5 decks)

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