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Matt's Physics 2 > Module 2 > Flashcards

Module 2 Flashcards

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1
Q

It is the degree of hotness of an object and it can be measured by thermometer.

A

Temperature

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2
Q

Temperature is usually expressed in:

A
  • Kelvin (K)
  • Fahrenheit (F)
  • Celsius (C)
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3
Q

It is the energy which travels from high temperature to low temperature in a matter.

A

Heat

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4
Q

It is also called thermal or internal energy.

A

Heat

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5
Q

It is the branch of physics that deals with the study of temperature, heat energy, and their relation to matter.

A

Thermal Physics

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6
Q

When objects are heated or cooled, the temperature changes and some properties of the materials change. This is called ________________.

A

Thermometric Properties

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7
Q

It is a common liquid element used in thermometers.

A

Mercury

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8
Q

Mercury freezes at ____ degrees Celsius.

A

-39°C

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9
Q

Mercury boils at ____ degrees Celsius.

A

357°C

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10
Q

Conversion of Celsius to Fahrenheit:

A

F = 9/5C + 32

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11
Q

Conversion of Fahrenheit to Celsius:

A

C = 5/9(F - 32)

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12
Q

Conversion of Celsius to Kelvin:

A

K = C + 273.15

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13
Q

Conversion of Kelvin to Celsius:

A

C = K - 273.15

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14
Q

All matters ___________ when heated because of the increase in the vibration of the molecules.

A

expand

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15
Q

It is the phenomenon where when the temperature changes, the length of the object changes.

A

Linear Expansion

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16
Q

For moderate temperature changes, change in length is __________ proportional to the change in temperature.

A

directly proportional

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17
Q

The formula of linear expansion when looking for change in length:

A

ΔL = (α)(Li)(ΔT)

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18
Q

The formula for linear expansion when looking for length given a specific temperature:

A

L = Li (1 + αΔT)

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19
Q

This states that when an object undergoes thermal expansion, any holes in the object expands as well.

A

Area Expansion

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20
Q

The formula of area expansion when looking for change in area:

A

ΔA = (2α)(Ai)(ΔT) || ΔA = (γ)(Ai)(ΔT)

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21
Q

The formula for area expansion when looking for area given a specific temperature:

A

A = Ai (1 + (2α)ΔT) || A = Ai (1 + γΔT)

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22
Q

It is the phenomenon where increasing the temperature causes increase in volume for both solids and liquids.

A

Volume Expansion

23
Q

What is the formula for Volume Expansion:

A

ΔV = (3α)(Vi)(ΔT) || ΔV = (β)(Vi)(ΔT)

24
Q

Energy transfer that takes place solely because of temperature difference is called ________.

A

Heat Flow or Heat Transfer

25
Q

The energy transferred in Heat Flow/Heat Transfer is ________.

A

Heat

26
Q

It means measuring heat.

A

Calorimetry

27
Q

This is the phenomenon when energy (heat) transfers due to temperature difference.

A

Thermal Equilibrium

28
Q

According to Joule, the temperature rise is _______ proportional to the work done.

A

directly proportional

29
Q

Transfer of heat through collision within a substance.

A

Conduction

30
Q

Materials that transfer energy (heat) through conduction.

A

Conductors

31
Q

Transfer of heat in gas or liquid through currents in the heated field.

A

Convection

32
Q

Transfer of energy (heat) at light speed through electromagnetic waves.

A

Radiation

33
Q

It is the energy radiated in a form of electromagnetic waves.

A

Radiant Energy

34
Q

It is defined as the amount of heat required to raise the temperature of a gram of water from 14.5°C to 15.5°C.

A

Calorie

35
Q

It is the quantity of heat required to raise the temperature of 1 pound of water 1°F.

A

British Thermal Unit (BTU)

36
Q

1 cal = _______ J

A

1 cal = 4.186 J

37
Q

1 BTU = _____ cal

A

1 BTU = 252 cal

38
Q

The quantity of heat (Q) required to increase the temperature of a mass of a certain material is _____________ to the change in temperature and the mass.

A

proportional

39
Q

It is the amount of heat required to raise the temperature by 1°C for the mass of 1kg.

A

Specific heat (c)

40
Q

What is the formula of quantity of heat (Q)?

A

Q = mcΔT

41
Q

A branch of science that deals with the properties of matter and their changes due to the effects of heat and work.

A

Thermodynamics

42
Q

It is the study of heat and work.

A

Thermodynamics

43
Q

Comes from the Greek word which means the power of heat.

A

Thermodynamics

44
Q

Properties of Thermodynamics:

A
  • Density
  • Pressure
  • Temperature
45
Q

It states that if C is in thermal equilibrium with A and B, then A and B are also in thermal equilibrium with each other.

A

Zeroth Law of Thermodynamics

46
Q

Two systems are in thermal equilibrium if they have ____________________.

A

the same temperature.

47
Q

This states that the energy leaving a body is equal to the energy entering another body in an isolated system.

A

Conservation of Energy

48
Q

This is the result when heat is absorbed or released without a change in temperature.

A

Phase Change

49
Q

Amount of heat required to change a substance from solid to liquid.

A

Latent Heat of Fusion

50
Q

Amount of heat required to change a substance from liquid to gas.

A

Latent Heat of Vaporization

51
Q

It states that the change in the internal energy (ΔU) of a closed system is equal to the energy added to the system through heat (Q) minus the work done by the system on its surroundings (W).

A

First Law of Thermal Dynamics || ΔU = Q - W

52
Q

A system that can exchange energy, but not matter, with its surroundings.

A

Closed System

53
Q

The sum of kinetic energies of all its constituent particles plus the sum of all the potential energies of the interaction among the particles.

A

Internal Energy

54
Q

Sign conventions of the First Law of Thermodynamics

A

+Q = heat added
-Q = heat loss
+W = by the system
-W = on the system

Matt's Physics 2 (10 decks)

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