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YEAR8 PHYSICS TERM1 > ALL RENEWABLE RESOURCES > Flashcards

ALL RENEWABLE RESOURCES Flashcards

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1
Q

Where do renewable resources come from?

A

Natural resources that
are naturally replenished such as
sunlight, wind and water.

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2
Q

What are the types of renewable resources?

A
  1. Solar
  2. Wind
  3. Water
  4. Geothermal
  5. Biofuels
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3
Q

What are the two types of solar energy?

A
  1. Photovoltaic
  2. Solar-thermal
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4
Q

What is photovoltaic?

A

Photons from light energy knocks
electrons off the silicon atoms,
producing electricity.

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5
Q

What is solar-thermal?

A

Use mirrors to focus sunlight to heat
up water, turning a turbine/generator.

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6
Q

What are the downsides of solar energy?

A

Daytime use only

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7
Q

How is wind energy achieved?

A
  • Wind is captured by windmill blades
  • Spins a turbine/generator
  • Generates electricity
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8
Q

What are the downsides of wind energy?

A
  • Depends on weather
  • Need massive sites
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9
Q

What are the two types of water energy?

A
  • Hydro
  • Tidal
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10
Q

What is hydro?

A

Harnesses power of gravity’s effect
on water

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11
Q

What is tidal?

A

Harnesses power of the moon’s
gravitational pull, on water.

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12
Q

How is geothermal energy achieved?

A
  1. Cold water is pumped in
  2. Hot water is extracted
  3. Steam turns the turbines
    4.Generator generates electricity
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13
Q

Where is geothermal energy produced?

A

Volcanic regions

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14
Q

How is biofuel produced?

A

From byproducts of agriculture
industry

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15
Q

What are some examples of biofuel?

A
  1. Woodchips
  2. Crops
  3. Fermentation of wastes / crops
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16
Q

Where is biofuel often used?

A

in conjunction with fossil fuels to complement power generation.

17
Q

Why don’t we use renewable energy?

A
  • Renewable energy can’t be stored
    easily to be used whenever we need
    it.
  • If there is little wind or sun, there
    may not be enough power.
  • Fossil fuels can be stored and used
    when needed.

YEAR8 PHYSICS TERM1 (16 decks)

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