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What do vaccinations do?
they protect you from certain diseases, they boost your bodys defence system which is also called the immune system
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how do vaccinations work?
they contain a little bit of a weak or dead disease which is injected into you and the antibodies fight it off
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what is an antigen?
a protein on the surface of a cell
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what is an antibody?
a chemical produced by white blood cells to target bacteria and viruses
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what is the central nervous system?
the brain and spinal chord
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what is the peripheral nervous system?
nerve cells that carry information to or from the centeral nervous system
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whats another name for a nerve cell?
neurone
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whats the order of how information travels from receptors to effectors in the nervous system?
receptor - sensory neurone - motor neurone - effectors
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what are receptors?
cells which produce electrical impulses in response to the change in enviroment
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what are effectors?
parts of the body such as muscles and glands
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what is limestone mainly made of?
calcium carbonate
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what happens when you heat limestone?
it breaks down to calcium oxide and carbon dioxide
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what is limestone used to make?
cement, mortar and concrete
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what is thermal decomposition?
its a reaction where calcium carbonate breaks down when heated strongly
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what is the equation for limestone breaking down?
calcium carbonate -> calcium oxide + carbon dioxide or CaCo3 -> Cao + Co2
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what is the limestone cycle?
limestone (CaCo3) -> thermal decomposition -> quicklime (Cao) -> add water -> slaked lime ( Ca(OH)2)-> lime water ( Ca(OH)2)
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what are the particles of a solid like?
the particles are tight together with no movement
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what are the particlesof a liquid like?
the particles are close together but random they have some movement
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what are the particles of a gas like?
the particles are far apart and random they move quickly and in any direction
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name the forms forms of energy?
magnetic, kinetic, heat, light, gravitational potential, chemical, sound, electrical, elastic potential, nuclear
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how do you work out energy efficiency?
useful energy transfared divided by energy supplied times by 100
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what is the energy efficiency?
the efficiency of a device is the proportion of energy supplied that is transfered in useful ways
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Other cards in this set

Card 2

Front

how do vaccinations work?

Back

they contain a little bit of a weak or dead disease which is injected into you and the antibodies fight it off

Card 3

Front

what is an antigen?

Back

Preview of the front of card 3

Card 4

Front

what is an antibody?

Back

Preview of the front of card 4

Card 5

Front

what is the central nervous system?

Back

Preview of the front of card 5
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