Ch 14 L3 quiz Flashcards

1
Q

.
A measure of how hot or cold something is; specifically a measure of the average kinetic energy of the particles in an object.

A

Temperature

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2
Q

An instrument that measure and indicates temperature.

A

thermometer

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3
Q

The temperature at which molecular energy is at a minimum (0 K on the Kelvin scale or -273.16 C) on the Celsius scale.

A

Absolute zero

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4
Q

The energy transferred between objects that are at different temperatures.

A

Heat

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5
Q

The energy of transfer as heat through a material

A

thermal Conduction

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6
Q

The movement of matter due to differences in density that are caused by temperature variation.

A

Convection

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7
Q

The vertical movement of air currents due to temperature variations.

A

convection currents

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8
Q

The quantity of heat required to raise a unit mass of homogeneous material 1 K or 1 C in a specified way given constant pressure and volume.

A

specific heat

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9
Q

A material used to cool an area or an object to a temperature that is lower than the temperature of the environment.

A

Refrigerator

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10
Q

A machine that transforms heat into mechanical energy or work.

A

Heat engine

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11
Q

AT in specific problems means

A

TF-TI

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12
Q

Specific heat equation

A

E= cMAT

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13
Q

Units for specific heat

A

J/KG × K

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14
Q

t = (Tf - 32) / 1.8

A

Celcius equation

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15
Q

On the Kelvin scale water boils at

A

375

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16
Q

Water freezes at ______ on the Celsius scale?

17
Q

What is normal human body temperature on the Fahrenheit scale?

18
Q

Temperature is the measure of

A

average kinetic energy of molecules in a substance

19
Q

A slower particle has a lower energy than an identical, faster particle. True or false

20
Q

It is possible to reach absolute zero

21
Q

When thermal energy is added to a substance, the substance’s particles move:

A

More rapidly at an increased diestance from each other.

22
Q

Heat transfer by conduction occurs when…

A

particles bump into each other

23
Q

Heat transfer by convection occurs when

A

large numbers of atoms move from place to place

24
Q

Heat travels from the sun to the earth by the process of.

25
A substance with a high specific heat:
Requires a lot of energy to become hot.
26
Thermal energy always moves:
From a high temperature object to a lower temperature object.
27
Energy cannot be greater nor destroyed only transferred as work, heat, or both
1st law of thermodynamics
28
Heat always moves from an area of lower temp to an area of higher temp
2nd law of thermodynamics
29
does not resist energy transfer
insulator
30
Absorbing energy
evaporation(liquid-gas) melting(solid-liquid) sublimation(solid-gas No liquid phase)
31
Releasing energy
condesation( gas-liquid) freezing(liquid-solid) deposition(gas-solid no liquid phase)
32
how much energy does it take to higher the temp of a substance
specific ( physical property of matter)