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GCSE Science > Energy Resources (Phy) > Flashcards

Energy Resources (Phy) Flashcards

1
Q

diff. energy stores and egs

A

elastic - STRETCHED elastic band
kinetic - moving car
chemical - batteries, petrol, food
thermal - hot drink
vibration (kinetic (+ gravitational)) - tuning fork
nuclear - radioactive aton, nuclear bomb, core of the sun
gravitational PE - ball on high shelf
electric - thunderstorm
magnetic - magnet

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2
Q

energy transfers

A

mechanical work - a force moving an object through a distance
electrical work - charges moving due to a potential difference
heating - due to temperature difference caused electrically or by chemical reaction
radiation - energy transferred as a wave, eg light and infrared - light radiation and infrared radiation are emitted from the sun

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3
Q

transfer diagram

A
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4
Q

sankey diagram

A
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5
Q

energy efficiency

A

x 100 for potential efficiency

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6
Q

home appliances (kettle, hair dryer, bulb, TV) energy transfers

A
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7
Q

fossil fuels overview

A
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8
Q

nuclear fuels overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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9
Q

bio-fuel overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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10
Q

wind overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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11
Q

hydroelectricity overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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12
Q

geothermal overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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13
Q

tides overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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14
Q

sun (as energy resource) overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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15
Q

water waves overview (energy store, Renewableness, uses, Power output, impact on environment)

A
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16
Q

how does fossil fuels work

A
17
Q

fossil fuels adv and disadv

A
18
Q

nuclear adv and disadv

A
19
Q

how do wind turbines work

A
20
Q

how do tidal barrage systems work

A

remember sluice gates open when tide is high, close until it is low, then open again - this is repeated

21
Q

how does hydroelectric work

A
22
Q

bio fuel adv and disadv

A
23
Q

wind power adv and disadv

A
24
Q

water power adv and disadv

A
25
Q

solar power adv and disadv

A
26
Q

solar panels vs solar cells

A

Solar Panels
The panels are fitted on a roof. Infrared radiation from the Sun shines through the glass lid and heats the water in the pipes.

Solar cells
A solar cell is a circuit component that uses light from the Sun to generate electricity. Many calculators use solar cells, and many houses have panels on their roof. Space probes often use solar cells to generate the electricity they need.

27
Q

how does nuclear power work

A

fuel = uranium (/plutonium)
uranium fuel is in sealed cans in the core of the reactor
the nucleus of a uranium atom is unstable and can be split in two - energy is transferred from nucleus when this happens
there are lots of uranium atoms in the core so it becomes very hot

the energy of the core is transferred by a fluid (the coolant) that is pumped through the core:
coolant’s very hot when leaving core - flows thru pipe to a heat exchanger, then back to reactor core
energy transferred is used to turn water into steam in the heat exchanger, this drives turbines that turn electricity generators

28
Q

how are fossil fuels and biomass used

A
29
Q

pump storage

A
30
Q

why is national grid important

A

designed to be able to adjust its supply to fluctuating energy demands

GCSE Science (6 decks)

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