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7 science > Physics - Energy > Flashcards

Physics - Energy Flashcards

1
Q

What is a PERSON’S ENERGY SOURCE?

A

Food

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2
Q

What kind of energy store is food?

A

Chemical energy store

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3
Q

What are the 5 ENERGY TRANSFERS?

A
  • Heating
  • Light
  • Sound
  • Electricity
  • Forces
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4
Q

What is the unit for measuring energy?

A

Joules (J)

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5
Q

What is the usual way to measure the energy in food?

A

Kilojoules (kJ)

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6
Q

Define CHEMICAL ENERGY STORES

A

Chemical energy stores - food, fuels and batteries

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7
Q

Define KINETIC ENERGY STORES

A

Kinetic energy - moving objects

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8
Q

Define THERMAL ENERGY STORES

A

Thermal energy - hot objects

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9
Q

Define STRAIN ENERGY STORES

A

Strain energy / Elastic potential energy - objects that are stretched, squashed or twisted

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10
Q

Define GRAVITATIONAL POTENTIAL ENERGY STORES

A

Gravitational potential energy - objects moved to higher places

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11
Q

Define NUCLEAR ENERGY STORES

A

Nuclear energy / Atomic energy - inside the every single particle

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12
Q

What are the 6 stores of energy called?

A
  • Chemical energy
  • Kinetic energy
  • Thermal energy
  • Strain energy / Elastic potential energy
  • Gravitational potential energy
  • Nuclear energy / Atomic energy
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13
Q

What does the LAW OF CONSERVATION OF ENERGY state?

A

Energy can neither be created or destroyed

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14
Q

What do FUELS STORE

A

Energy

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15
Q

How is the ENERGY TRANSFERRED FROM FUELS?

A

Burning them

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16
Q

What are fuels used for?

A

Heating things

17
Q

What are FUELS USED for?

A

Heating things

18
Q

How were FOSSIL FUELS FORMED?

A

From dead organisms which had been trapped underground for hundreds of millions of years

19
Q

What are the 3 most common types of fossil fuels?

A
  • Coal
  • Oil
  • Natural gas
20
Q

What are the 3 MOST COMMON types of FOSSIL FUELS?

A
  • Coal
  • Oil
  • Natural gas
21
Q

Define NON-RENEWABLE

A

Non-renewable - something that cannot be replaced as fast as it’s being used up: something that will eventually run out

22
Q

Where did FOSSIL FUELS originally OBTAIN their ENERGY from?

A

The Sun

23
Q

Name 2 NON-RENEWABLES

A
  • Fossil fuels

- Nuclear fuel

24
Q

What is NOT a FUEL?

A

Electricity

25
Q

Name 7 RENEWABLES

A
  • Solar
  • Wind
  • Tidal
  • Wave
  • Biofuels
  • Geothermal
  • Hydroelectric
26
Q

What ENERGY RESOURCES do NOT RELY on the SUN

A
  • Geothermal
  • Nuclear
  • Tidal

7 science (7 decks)

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