science revision

what are the nine types of energy?
1)sound, 2)light, 3)elastic, 4)gravitational pertential energy, 5)kenetic , 6) thermal/heat , 7)nuclear , 8)chemical 9)electrical
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what is a fosil fuel?
a non-renewable source of energy extracted out of the ground.
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what is wave energy?
wave energy is where through the use of machines that bob up and down in the waves creating energy that can then be turned to electrical energy for us to use.
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what is the equation for respiration?
glucose + oxygen = carbon dioxide + water
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what is the equation to aerobic respiration?
lactic acid + oxygen = carbon dioxide + water
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what are 3 disadvantages of anaerobic respiration?
1) builds up lactic acid , 2) goes into oxygen debt , 3)doesn't produce much energy
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what does 'mrs gren' stand for?
M - movement R - respiration S -sensetivity G - growth R - reproduction E - exctriction N - nutrition
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where does respirartion happen?
inside the cell
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where does breathing take place?
on the surface of the cell
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what is diffusion?
when particles move from a place of high concontration to a area of low concontration
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what can the rate of diffusion depend on?
tempreature , distance the particles have travelled , difference in concontration
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what is the purpose of a cell membrane?
holds the cell together + controls what goes in and out.
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what is the purpose of a cell wall?
supports the cell.
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what is the purpose of the mitocondria?
where most aerobic respiration takes place.
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what is the purpose of the choroplasts?
where photosynthsis takes palce.
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what is the purpose of the vacuole?
where cell sap is stored.
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what is geothermal energy?
geothermal energy is a renewable source of energy. It is produced by turning the heat from the rocks deap underground to electrical energy ready to use in our homes.
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what is hydroelectricity?
it is a renewable source of energy. It is produced by turnng the kenetic energy from the flowing river into electrical energy .
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what is tidal energy?
it's a renewable energy. which is produced by turning the gravitarional energy from the high tide into electrical energy.
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what is solar energy?
solar energy i a renewable source of energy. it is produced by turning heat and light energy into either electrical energy or used as heat energy.
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what is wind energy?
it's arenewable source of energy, ehich can be produced by the wind turning turbines to produce kenetic energy which then can be turned to electrical energy.
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what is biomass?
[email protected] arenewable source of enrgy. it's produced by turning the chemical potential enrgy stored inside things that where once alive which can then be turned into heat energy by the burning of them.
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what is a metal ore?
a metal ore is a rock that contains minerals and has a certain amounts of metal oxides which can be extracted to become a pure metal.
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what is a displacement reaction?
a displacement reaction is where a metal reacts with a higher reaction than one with alower one. the higher one takes the place of the lower one when in a reaction with the lower one.
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what is todays atmosphere mde up of?
78% nitrogen, 21% oxygen, 0.04% carbon dioxide, 1% other gasess.
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define 'conducts'
can pass through electricity and heat.
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define 'mallable'
can be shaped by hamering
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define 'ductile'
can be streched
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define 'dense'
how heavy it is for it's size
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how can you test for oxygen gas?
relights splint
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how can you test for carbon dioxide?
lime water turns milky white
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how can you test for hydrogen?
put lit splint in and it will make a squeky pop noise.
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how many carbon atoms are in an avarage adult?
a billion billions
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what is a decomposer?
they break down dying orgnisms and waste matter until there is no energy left and release carbon dioxide when feeding on matter.
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what is a adaption of the alveoli?
the oxygen goes in the alveoli and travels into the blood stream.
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would a taller person have a large lung compasity than a smaller person or a smaller lung compasity?
a larger lung compasity.
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Other cards in this set

Card 2

Front

what is a fosil fuel?

Back

a non-renewable source of energy extracted out of the ground.

Card 3

Front

what is wave energy?

Back

Preview of the front of card 3

Card 4

Front

what is the equation for respiration?

Back

Preview of the front of card 4

Card 5

Front

what is the equation to aerobic respiration?

Back

Preview of the front of card 5
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