Physics - Energy Resources

List renewable resources
Wind, solar, hydroelectric, wave, tidal, biofules, geothermal
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List some advantages of renewable energy
Will never run out, don't release CO2 (don't contribute to climate change)
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A disadvantage could be that some are not ___ (e.g wind/waves)
Reliable
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Why aren't they reliable?
won't always be lots of wind and sun to generate electricity (efficient electricity)
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___ power destroys habitats when dams are built and valleys flood, bur are a reliable source of energy
Hydroelectric
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List another disadvantage for hydroelectricity
Only useful if in place with lots of rivers (not suitable for UK)
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Geothermal energy uses __ from earth to generate electricity
Heat
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What are biofuels produced from?
Plant material / animal
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Burning the fuel releases CO2 but no extra CO2 is released into air. Why?
Grow of plants took in CO2 so it's carbon neutral
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Can biofules be used to power any vehicles?
Yes
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One problem is that if we use land to grow crops for biofuel, it could...
Increase food prices
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Fossil fuels are formed from remains of organisms that exited millions of years ago. they're burned in ___ ___ to produce heat energy
power stations
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What are the advantages of fossil fuels?
stores lots of energy, easy to store/combust, reliable, widely available
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List the disadvantages
non-renewable (source will run out), contributes to climate change (releases O2), produces sulphur dioxide - acid rain , environmental impacts + dangerous (mining, drilling for resource)
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nuclear energy to produces from nuclear reactions within r___ material
radioactive
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what is an example of a radioactive material?
uranium / plutonium
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the energy produced is released as __ energy
heat / thermal
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what are some advantages of nuclear power?
doesn't effect climate change, efficient
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List the disadvantages
non-renewable, risk of contamination (radioactive material could enter environment), waste (fuel remains radioactive for 100s years, needs storing properly - costly), expensive to build power stations
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How does building damns / reservoirs produce electricity? (hydroelectricity)
harnesses GPE in water that's stored - turns turbines as it falls, generating electricity
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what are the advantages of hydroelectricity?
renewable (doesn't run out), reliable (constant availability), quick start up / shut down, no fuel costs, no pollutants produced
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list the disadvanatages
expensive to build damns, destroyed habitats to build damn, flooding of farmland to build dam
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wind power harnesses the ___ energy in wind particles, turning wind turbine blades, producing electricity
kinetic
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list the advanatages
renewable, no fuel costs, no pollution, little impact on environment
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list disavanatages
unreliable, land uses (needs lost of turbines to produce efficient energy), eyesore (some people think it ruins the landscape)
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what other energy resource harnesses the kinetic energy in water?
tidal - due to tides of ocean
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how does is work?
tide drives generators in a tidal barrier - producing electricity
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list advanatages
renewable, reliable (can predict when tides will occur)
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list disadvantages
large tidal barriers - eyesore + effects wildlife
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solar panels harness ____ reaching earth
sunlight
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solar energy (in light) is converted into electricity using s___ c___
solar cells
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list advantages
renewable, no fuel costs, no pollution
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list disadvantages
expensive solar cells, inefficient, unreliable
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biofuels are energy from plant/ animal waste. how is energy produced?
waste is burned to produce thermal energy
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One advantages is that is carbon neutral. why is it carbon neutral?
it releases same amount of O2 when burned then released in lifetime
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what are the disadvantages?
takes time to grow/produce material for biofuel, requires energy to grow/harvest biofuel
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wind generates waves on water surface. how does this produce energy?
devices are placed in water to harness kinetic energy from waves
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list advantages
renewable, no fuel costs, no pollution
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list disadvanatages
require sustainable location, can affect local environment, unreliable
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heat stored in earths crust is used to heat water. we can harness this heat as energy. what type of energy resource is this?
geothermal
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what causes the heat from the crust?
volcanic / radioactive activity
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list advantages
renewable, no fuel costs, no pollutants produced, reliable (even tho hard to find specific places for it, it's still constant))
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list disadvantages
hard to find location for this, expensive to build geothermal power stations
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Other cards in this set

Card 2

Front

List some advantages of renewable energy

Back

Will never run out, don't release CO2 (don't contribute to climate change)

Card 3

Front

A disadvantage could be that some are not ___ (e.g wind/waves)

Back

Preview of the front of card 3

Card 4

Front

Why aren't they reliable?

Back

Preview of the front of card 4

Card 5

Front

___ power destroys habitats when dams are built and valleys flood, bur are a reliable source of energy

Back

Preview of the front of card 5
View more cards

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