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Physics Unit 1 T1 > Thermodynamics > Flashcards

Thermodynamics Flashcards

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1
Q

What is heat?

A

Form of energy

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2
Q

What is heat measured in?

A

joules

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3
Q

What is temperature measured in?

A

Celsius

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4
Q

T or F: Heating an object up slows down its particles

A

False

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5
Q

T or F: Particles are in constant motion

A

true

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6
Q

Fill in the blank: Kinetic Energy + ____ = Internal Energy

A

Potential Energy

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7
Q

T or F: Metals transfer heat quickly

A

True

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8
Q

Name the 3 variables affecting temperature change

A

Mass, Material, amount of heat

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9
Q

What is 1C in Kelvin?

A

274K

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10
Q

Name the 3 types of heat transfer

A

Conduction, Convection, Radiation

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11
Q

T or F: Convection heat transfer happens through touch

A

false

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12
Q

What are the 2 variables affecting radiation absorbtion

A

Material, Surface Area

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13
Q

What is the main type of radiation?

A

Infra-red

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14
Q

Which type of heat transfer can travel through a vacuum.

A

Radiation

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15
Q

What is Specific Heat Capacity

A

The amount of energy needed to raise 1kg of material by 1C

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16
Q

What does this equation represent? Q=MC△T

A

Energy in a change of temperature of an object

17
Q

What does Q stand for in: Q=MC△T

A

Total energy

18
Q

What does △T stand for in: Q=MC△T

A

Change in temperature

19
Q

What is M measured in for this equation: Q=MC△T

A

Kilograms

20
Q

What is Heat Capacity measured in for this Equation: Q=MC△T

A

J/Kg

21
Q

What is Latent Heat?

A

The amount of energy needed for 1Kg of an object to change state (Gas, Liquid, Solid)

22
Q

T or F: There is no temperature change during a state change (Gas, Liquid, Solid)

A

True

23
Q

What is the equation for a change in state

A

E = M*L

24
Q

What is L measured in for this equation: E=M*L

A

J/Kg

25
Q

What are the 4 factors affecting evapouration

A

Volatility, Surface Area, Humidity, Air Movement

26
Q

How does Volatility affect rate of Evaporation

A

The stronger the surface bonds, the lower the rate of evaporation

27
Q

What is the Zeroth Law of Thermodynamics

A

If 2 different systems are in equilibrium with a 3rd, they are all in equilibrium

28
Q

What is the equation for transference of heat between 2 systems

A

-Q = Q or -(MC△T) = MC△T

29
Q

What is a system in relation to thermodynamics

A

A collection of objects being studied

30
Q

What is the 1st Law of Thermodynamics

A

△U = Q - W or Change in internal energy equals transferred heat energy minus work energy

31
Q

What does W stand for in this equation: △U = Q - W

A

‘Work’ or lost energy

Physics Unit 1 T1 (3 decks)

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