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Science Quiz > Thermal Energy Unit > Flashcards

Thermal Energy Unit Flashcards

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1
Q

Definition of heat

A

The transfer of thermal energy from a warmer object to a cooler object

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2
Q

Definition of radiation

A

The transfer of energy by electromagnetic waves

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3
Q

Definition of temperature

A

A measure of the average kinetic energy of the particles of a substance

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4
Q

Example of a conductor:

A

Metal

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5
Q

Example of an insulator:

A

Wool

Glass
Plastic
Rubber
Air
Wood

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6
Q

What is the temperature scale where you can find absolute zero?

A

Kelvin Scale

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7
Q

What is the temperature scale where you can find that water freezes zero degrees at?

A

Celcius Scale

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8
Q

Definition of conductor

A

The term used to describe a material that conducts heat well

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9
Q

Definition of insulator

A

The term used to describe a material that doesn’t conduct heat well.

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10
Q

As the thermal energy of matter increases, it causes the particles to__________.

A

Speed up

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11
Q

As the thermal energy of matter decreases, it causes the particles to__________.

A

Slow down

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12
Q

The transfer of thermal energy of one particle of matter to the other

A

Conduction

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13
Q

The movement of a fluid, caused by differences in temperature, that transfers heat from one part of the fluid to another

A

Convection current

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14
Q

Definition of specific heat

A

The amount of heat required to raise the temperature by one degree (1kg by 1 Kelvin)

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15
Q

What scale has the boiling point of water at 212 degrees?

A

Fahrenheit Scale

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16
Q

Define thermal expansion

A

The expansion of matter when it is heated

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17
Q

The transfer of thermal energy by the movement of a fluid

A

Convection

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18
Q

The energy that is generated and measured by heat

A

Thermal Energy

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19
Q

Heat transferred by direct conduct of solids

A

Conduction

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20
Q

Conduction, Convection, or Radiation?

A hot air balloon

A

Convection

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21
Q

Conduction, Convection, or Radiation?

The sun

A

Radiation

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22
Q

Conduction, Convection, or Radiation?

A bonfire

A

Radiation

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23
Q

Conduction, Convection, or Radiation?

A bonfire

A

Conduction

24
Q

Conduction, Convection, or Radiation?

Boiling a pot of water

A

Conduction

25
Q

Conduction, Convection, or Radiation?

Burning your tongue on hot soup

A

Conduction

26
Q

Conduction, Convection, or Radiation?

Indoor fire

A

Convection

27
Q

Conduction, Convection, or Radiation?

A microwave or an oven

A

Radiation

28
Q

Conduction, Convection, or Radiation?

Stepping onto hot sand at the beach

A

Conduction

29
Q

Energy transferred between objects

A

Heat

30
Q

A material that resists the flow of heat

A

Insulator

31
Q

The average kinetic energy of particles in an object

A

Temperature

32
Q

The ability to do work

A

Energy

33
Q

Circular motion when warm material rises, cools, and then sinks

A

Convection

34
Q

In what type of motion does convection happen?

A

Circular motion

35
Q

A material through which heat moves quickly or easily

A

Conductor

36
Q

The point at which atoms transmit no thermal energy

A

Absolute Zero

37
Q

Electromagnetic waves that carry energy

A

Radiation

38
Q

Describe what happens to the temperature, kinetic energy, and movement of particles in water. (think back to the water and food coloring lab)

A

When water is warmer, the kinetic energy is higher, so there tends to be more movement in the water molecules. When the water is cooler, there is less movement in the molecules and lower kinetic energy. The higher the kinetic energy, the more the solute that is added will dissolve and mix into that water or solvent.

39
Q

What SI unit is temperature measured in?

A

(K) Kelvin

40
Q

What SI unit is heat measured in?

A

Calorie or JOULES (J-E-W-L-S)

joules is the main unit for measuring heat

41
Q

Sum of the kinetic and the potential energy of all of the particles in an object

A

Thermal Energy

42
Q

Conduction, Convection, or Radiation?

An ice cube melting in your hand

A

Conduction

43
Q

Conduction, Convection, or Radiation?

X-rays

A

Radiation

44
Q

Conduction, Convection, or Radiation?

Cell phones

A

Radiation

45
Q

Conduction, Convection, or Radiation?

Candles inside

A

Convection

46
Q

Conduction, Convection, or Radiation?

Air Conditioner (AC)

A

Convection

47
Q

Conduction, Convection, or Radiation?

Light bulb inside of a lamp

A

Radiation

48
Q

_________ is the transfer of thermal energy by _______, ________, and_______.

A

HEAT is the transfer of THERMAL ENERGY by CONDUCTION, CONVECTION, and RADIATION.

49
Q

Good thermal conductors have _____ heat capacities.

A

low

50
Q

Insulators have ________ heat capacities.

A

high

51
Q

Conduction in two words:

A

Direct Contact

52
Q

Conduction occurs in ____, ____, and ____.

A

Solids, liquids, and gases

53
Q

______ are the best conductors of heat and electricity.

A

Metals

54
Q

Metals

A

fluids

55
Q

The rising of warm and sinking of cool fluids form what?

A

Convection Current

56
Q

Formula to convert Celsius to Kelvin:

A

Degrees Celsius + 273=K

57
Q

Formula to convert Kelvin to Celsius:

A

K-273=Degrees Celsius

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