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Science > Conduction, Convection And Radiation > Flashcards

Conduction, Convection And Radiation Flashcards

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0
Q

Thermal energy

A

Total energy of moving particles in a solid, gas or liquid

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1
Q

Temperature

A

A measure of the average energy of all the particles in a solid, liquid or gas

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2
Q

Chemical energy

A

Energy stored in matter , such as food, fuels and clothing

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3
Q

Magnetic energy

A

Energy that causes types of metal to attract or push away from certain other metals

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4
Q

Light energy

A

Form of energy our eyes can detect

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5
Q

Gravitational energy

A

Stored energy object has when it’s above earths surface

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6
Q

Nuclear energy

A

Stored energy in middle of particles of matter. Electricity from nuclear power plants

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7
Q

Electrical energy

A

Energy moving through wire or electric device

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8
Q

Elastic energy

A

Energy stored in objects that are stretched , bent or compressed

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9
Q

Sound energy

A

Energy we can hear

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10
Q

Mechanical energy

A

Energy of objects in motion

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11
Q

Energy transformation

A

Changing from one form of energy to another

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12
Q

Heat

A

Thermal energy transferred from one substance to another or within one substance

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13
Q

Thermal expansion

A

The change in volume in response to change in temperature

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14
Q

Heat transfer

A

Heat transfer occurs when energy is carried through or across one solid, liquid or gas to another

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15
Q

Conduction

A

He transferred by the direct contact of molecules

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16
Q

Convection

A

He transferred through a liquid or has by means movement of particles

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17
Q

Radiation

A

Heat transferred through empty space by invisible in feared rays

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18
Q

List 8 sources of heat

A

Friction, mechanical, chemical, electricity, light / solar energy, fossil fules, wood and renewable energy

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19
Q

What happened when we judged temperature with our hands?

A

When you put one hand in the cold water it feels cold and the hand in the hot water feels hot. When put in the room temperature water, the hot hand felt cold and the cold hand felt hot.

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20
Q

What was the conclusion of the judging temperature experiment?

A

Hands are not a good judge of temperature

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21
Q

What is the Kelvin scale?

A

OK=273.15•c or absolute zero

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22
Q

List three points about making a simple alcohol thermometer:

A
  • with increasing temperature, the volume of liquid expands in the liquid moves up to tubes
  • alcohol reacts quickly to changing temperatures
  • alcohol has a lower freezing point allowing for the measurement of temperatures below 0•c
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23
Q

What is this: A form of radiant energy, this is one of the most obvious natural sources of heat available to us. Electromagnet waves carry this heat source the greatest distance it needs to travel to reach earth

A

Solar energy

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24
Q

When atoms are split, energy is released. While there are many advantages to use the source of heat energy, there are many unsolved, and perhaps, unsolvable disadvantages

A

Nuclear energy

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25
Q

Coal-burning and hydroelectric generation stations are major producers of one of my main sources of heat: electricity.

A

Electrical energy

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26
Q

This produces heat through the push or pull that can cause friction and results in faster- moving particles.

A

Mechanical force

27
Q

It takes advantage of the intense heat found within Earth. Some parts of the world uses renewable heat source more than other parts of the world.

A

Geothermal energy

28
Q

This form of energy is released when fuel such as what is burned. The same thing happens when we eat food, an important fuel for our bodies. But this case, the heat is produced through the process of digestion.

A

Chemic energy

29
Q

Give an example of electrical energy

A

Toaster

30
Q

Even example of solar energy

A

Solar panels

31
Q

Give an example of nuclear energy

A

Poles of pollution in factories

32
Q

Give an example of mechanical energy

A

Rubbing hands together to stay warm

33
Q

Give an example of chemical energy

A

Fire

34
Q

What does water freeze at?

A

0•c

35
Q

What does water boil at?

A

100•c

36
Q

In junkyard wars, what was the key to raising the mini?

A

Using buoyancy

37
Q

An object with positive buoyancy will what?

A

Float

38
Q

What did the two teams do to lift their mini?

A

One used crane to lift the car and the other Sunk barrels, attached the barrels to min , filled oil drums with air and the car (hopefully) floated

39
Q

Who won junkyard wars?

A

The orange team

40
Q

Molecules in a solid are locked in place and vibrate > + ____ = faster

A

Heat

41
Q

Solid turns into a liquid - _____ and ____ _______.

A

Vibrate and move around

42
Q

The more the heat the _____ the particles _______.

A

Faster, move

43
Q

Very hot= what?

A

Really fast and escape

44
Q

Boil=?

A

Evaporates and particles escape and are free to wander around wherever and how fast they want

45
Q

When you continue to heat gas, atoms will come apart which is called what?

A

Plasma

46
Q

In the pop can crush experiment , why do the cans crush?

A

Steam occupies the space in the can since the air has been pushed out. In cold water, the steam is very rapidly cooled . Gas molecules are condensed back to the liquid so there is less steam and a vacuum mid created. The vacuum sucks up the left over air causing the can to crush.

47
Q

In the ballon blow experiment, what happens?

A

The ballon is being filled with steam, which blows up the ballon with air. When the water cooled, the steam molecules slowed down and condensed back to liquid form.

48
Q

In the ballon in a bottle experiment, what happened?

A

The space between the particles condensed, causing the balloon to be sucked in

49
Q

What is an example of conduction?

A

Heat from hand transfers to the cone causing the ice cream to melt

50
Q

What is an example of radiation?

A

The sun warms the earth

51
Q

List three substances that conduct heat:

A
  • Copper
  • metal
  • aluminum
52
Q

What is the opposite of conduction?

A

Insulate

53
Q

List four objects used to stop conduction:

A
  • rubber
  • glass
  • wood
  • a coat
54
Q

Name what type of heat this is: car tires on a road

A

Conduction

55
Q

Name what type of heat this is: clothes dryer

A

Convection

56
Q

Name what type of heat this is: hair dryer

A

Convection

57
Q

Name what type of heat this is: hot air rising from truck

A

Radiation

58
Q

Name what type of heat this is: shuttle’s surface in space

A

Radiation

59
Q

Name what type of heat this is: curling irons

A

Conduction

60
Q

Name what type of heat this is: hot water heater

A

Convection

61
Q

Name what type of heat this is: the air above fire

A

Convection or radiation

62
Q

Why were metal spoons better conductors than wood and plastic spoons in the conduction experiment?

A

Because metals are good conductors and plastic and woods are insulators ( they don’t heat up)

63
Q

I’m the magic coin heat experiment, why did the lonnie push up off the bottle?

A

The pressure from the warm air pushed against the glass of cold air causing the lonnie to push up.

64
Q

In the conduction-balloon explode experiment, why did the balloon pop but didn’t when it had water in it?

A

The water absorbed the heat instead of the air and conducted the heat away from the balloon, causing the balloon not to explode.

Science (3 decks)

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