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Science Term 4 Revision - Nate > Physics - Nate > Flashcards

Physics - Nate Flashcards

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1
Q

Energy is defined as the ability to make ________ happen.

A

changes

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2
Q

Energy is measured in units called ________.

A

Joules

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3
Q

One kilojoule is equivalent to ________ joules.

A

1000

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4
Q

Forms of energy include e________ , s________ , l________, and h________.

A

electrical, sound, light, heat

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5
Q

The three ways that energy can transfer from one object to another are:

A

conduction, convection, or radiation

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6
Q

Energy can transform from one form to another. For example, k ________ energy can transform into t ________ energy.

A

kinetic, thermal

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7
Q

Whatis the name of a diagram that represent how energy transforms from one form to another?

A

energy flow diagram

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8
Q

The Law of Conservation of Energy states that energy cannot be c ________or d ________, only t ________ from one form to another.

A

created, destroyed, transformed

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9
Q

In energy transformations, some energy is considered u ________, while some is considered w ________ .

A

useful, wasted

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10
Q

Energy efficiency is calculated as ________ energy output divided by ________ energy input, multiplied by 100.

A

useful, total

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11
Q

H________ is a form of energy measured in Joules.

A

Heat

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12
Q

Heat is measured in ________, while temperature is measured in ________.

A

Joules, degrees Celsius

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13
Q

Heat can transfer through c ________, c ________, or r ________.

A

conduction, convection, radiation

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14
Q

________ allow heat to pass through easily, while ________ prevent heat transfer.

A

Conductors, insulators

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15
Q

Potential energy is stored energy, and examples include g________, c________, e________, and n________ energy.

A

gravitational, chemical, elastic, nuclear

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16
Q

Gravitational potential energy is calculated with the formula PE = ________ × ________ × height.

A

mass, gravity

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17
Q

________ energy is the energy associated with moving objects.

A

Kinetic

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18
Q

Kinetic energy is calculated with the formula KE = ________ × mass × speed².

A

0.5

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19
Q

In the home, energy is often consumed in areas such as h ________, l ________, and powering applicances.

A

heating, lighting

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20
Q

The global effects of greenhouse gases include contributing to ________ and ________.

A

climate change, global warming

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21
Q

List three ways that energy-efficient houses reduce energy consumption.

A

insulation, solar panels, LED

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22
Q

Solar, wind and hydro are examples of…

A

renewable energy

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23
Q

Non-renewable energy sources include ________, ________, and ________.

A

coal, oil, natural gas

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24
Q

Renewable energy is s ________, but what is a disadvantage?

A

sustainable, high initial costs

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25
Q

A plane taking off on the runway is classified as k________ energy, with the specific type being m________ energy.

A

kinetic, mechanical

26
Q

A kid landing on a trampoline is classified as ________ energy with the specific type of ________ energy.

A

kinetic, elastic

27
Q

A dog chasing the postman is classified as ________ energy with the specific type of ________ energy.

A

kinetic, mechanical

28
Q

A campfire ready for lighting is classified as ________ energy with the specific type of ________ energy.

A

potential, chemical

29
Q

A cliff diver at the top of a cliff is classified as ________ energy with the specific type of ________ energy.

A

potential, gravitational

30
Q

A guitar being played is classified as ________ energy with the specific type of ________ energy.

A

kinetic, sound

31
Q

A pot of boiling water is classified as ________ energy with the specific type of ________ energy.

A

kinetic, heat

32
Q

Sitting at the top of a tree is classified as ________ energy with the specific type of ________ energy.

A

potential, gravitational

33
Q

A radioactive (nuclear) atom is classified as ________ energy with the specific type of ________ energy.

A

potential, nuclear

34
Q

Energy is defined as the ability to do ________.

A

work

35
Q

Potential energy is the stored energy an object has due to its p ________ or c ________.

A

position, condition

36
Q

Kinetic energy is the energy an object has due to its ________.

A

motion

37
Q

34 MegaJoules is equivalent to ________ Joules.

A

34,000,000

(34 × 1,000,000)

38
Q

560 KiloJoules is equivalent to ________ Joules

A

560,000

(560 × 1,000)

39
Q

234,000,000 Joules is equivalent to ________ MegaJoules

A

234

(234,000,000 ÷ 1,000,000)

40
Q

500,000 Joules is equivalent to ________ KiloJoules

A

500

(500,000 ÷ 1,000)

41
Q

Energy flow of boiling water in a kettle:
e ________energy is converted into t________ energy in the water.

A

electrical, thermal

Electrical Energy → thermal energy in water.

42
Q

Energy flow of generating electrical energy at a coal-fired power station:
c________ energy in coal is converted to t________ energy from burning, then to k________ energy as steam/turbine movement, and finally to e________ energy.

A

chemical, thermal, kinetic, electrical

chemical → thermal → kinetic → electrical

43
Q

A Person Bungee Jumping:
g____________ p________ energy (at the top) →k ____________ energy (falling) → e________ p _________ energy (in the cord) → back to k_________ energy (rebound).

→ = converted to

A

Kinetic Energy, Elastic Potential Energy, Kinetic Energy

44
Q

Energy flow of generating electrical energy using wind turbine:
k________ energy (wind) is converted to m________ energy (turbine rotation) and then to e________ energy.

A

kinetic, mechanical, electrical

45
Q

Energy flow of an archer shooting an arrow:
e __________ p___________ energy (in the bow) → k __________ energy (arrow in motion).

A

elastic potential, kinetic

46
Q

Generating Electrical Energy using Hydroelectric Power: ________ (water at height) → ________ (flowing water) → ________ (turbine rotation) → ________.

A

Gravitational Potential Energy, Kinetic Energy, Mechanical Energy, Electrical Energy

47
Q

The Law of Conservation of Energy is the principle that energy cannot be c________ or d________ only t________ from one form to another.

A

created, destroyed, transformed

48
Q

Complete the sentence using type and object

The difference between transforming energy and transferring energy is …

A

that transforming energy changes its type while transferring energy moves it from one object to another.

49
Q

A hairdryer has an energy input of 1500 J and gives out 1300 J of useful heat energy. How efficient is the hairdryer?

A

86.67%

50
Q

Efficiency formula problems

Refer to questions 23 - 25 of Revision book

A

Rate according to your understanding.

51
Q

Heat is the transfer of e________ between objects that are at different t________. Heat is measured in J________.

A

energy, temperatures, Joules

52
Q

Temperature is a measure of the average k________ energy of particles in a substance, measured in D________ c________ or K________.

A

kinetic, degrees Celsius, Kelvin

53
Q

Convection is the transfer of heat through the m________ of fluids (liquids or gases), where warmer, less d________ fluid rises, and cooler, more dense fluid s________.

A

movement, dense, sinks

54
Q

Conduction is the transfer of heat through direct c________ between particles in a solid, where energy moves from particles with h________ energy to those with l________ energy.

A

energy, contact, higher, lower

55
Q

Radiation is the transfer of heat through e________ waves, which can travel through a v________ without needing a medium.

A

electromagnetic, vacuum

56
Q

Define temperature

A

Measure of the average kinetic energy of particles in a substance

57
Q

Define temperature using the following terms: kinetic, degrees Celsius, Kelvin.

A

Temperature is a measure of the average kinetic energy of particles in a substance, measured in degrees Celsius or Kelvin.

58
Q

Define convection using the following terms: movement, dense, sinks.

A

Convection is the transfer of heat through the movement of fluids (liquids or gases), where warmer, less dense fluid rises, and cooler, more dense fluid sinks.

59
Q

Define conduction using the following terms: contact, higher, lower.

A

Conduction is the transfer of heat through direct contact between particles in a solid, where energy moves from particles with higher energy to those with lower energy.

60
Q

Define radiation using the following terms: electromagnetic waves, vacuum, medium.

A

Radiation is the transfer of heat through electromagnetic waves, which can travel through a vacuum without needing a medium.

Science Term 4 Revision - Nate (2 decks)

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