yr 8 (core)

Saarah Ahmed
Flashcards by Saarah Ahmed, updated more than 1 year ago
Saarah Ahmed
Created by Saarah Ahmed almost 7 years ago
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Description

1 year before GCSE Revision (Science) Flashcards on yr 8 (core), created by Saarah Ahmed on 05/18/2014.

Resource summary

Question Answer
you are ... sighted if you have concave lenses long-sighted (cave is long)
you are ... sighted if you wear convex lenses short-sighted
if the lens is fat in the middle it is a ... lens concave
a convex lens is ... in the middle thin
... lens put the rays apart concave (makes it fatter)
convex lens put the rays ... closer
... lens shrinks the image convex
concave lens ... the image enlarges
if you are short-sighted your eyeball is too ... long
if your eyeball is too small your ... long sighted
you are ... if the image is focused behind the retina long-sighted (the image is too long)
if the image is focused in front of the retina you are ... short sighted (too short to reach the retina)
what is the first part of the ear ear canal
... starts to beat and passes it on to the ossicles ear drum ( instrument first one to beat )
the ossicles passes on the vibration to the ... in liquid form cochlea (shaped like a snails shell)
the cochlea passes it on to the ... nerve which is in the brain auditory nerve
the iris is the ... coloured part, made of muscle and controls the amount of light going into the eye
the ... contains cells which are light sensitive (where the image is focused) retina
the cornea ... the ... refracts light
the ... is made smaller or bigger by the ... cornea iris
the optic nerve focuses light onto the ... retina
draw an ocilliscope graph with the parts labelled trough crest amplitude time period
osilliscope graph- is the sound is deep and loud what are the waves going to look like wide and tall
... is where gas exchange takes place alveoli
tidal volume is the ... amount of air you can breathe in and out of your lungs average
... air us the maximum amount of air you can breathe in and out if your lungs vital
training makes the lungs more effective at supplying the ... with oxygen blood
... enters the blood whilst ... leaves oxygen enters carbon dioxide leaves
glucose and oxygen are carried by the bloodstream to the ... muscles
the windpipe is: flexible not too weak nor strong not breakable made of ... cartilage (practise spelling)
capillaries grow around the ... alveoli
alveoli is very ... small
alveoli have a ... surface area large
... carries out gas exchange alveoli
alveoli have a lot of blood ... veins
name the three types of enzymes lipase protease amalyse
amalyse is found in the: pancreas salivary glands ... small intestine
amylase turns starch into ... sugars
... is found in the: stomach pancreas small intestine protease
protease turns proteins into ... amino acid
lipase is found in the: ... small intestine pancreas
... turns lipids into fatty acids and glycerol lipase
the liver produces ... which helps the digestion of fat bile
food is ... into the bloodstream which takes place in the small intestine absorbed
extra water is absorbed back into the body in the ... large intestine
the ... creates chemicals called the digestive enzymes pancreas
what are the two types of respiration aerobic anaerobic (practise spelling)
anaerobic glucose (arrow) ... acid and energy lactic
anaerobic there is no ... involved oxygen
anaerobic a build up of lactic acid can cause a ... cramp
in anaerobic less/more energy is produced the aerobic less (no oxygen)
in anaerobic ... is broken down fully glucose
aerobic glucose + oxygen (arrow) ... + carbon dioxide + energy water
aerobic ... energy is produced more
aerobic creates water and ... which we don't need carbon dioxide
name the three things atoms contain neutrons protons electrons
protons have a .. charge and the electrons have a negative charge making the atom neutral protons are positive (p) electrons are negative (electro man in spiderman is evil - negative)
when atoms are chemically joined they become an ... element
when two ... are chemically joined it becomes an compound elements
elements can have up to ... shells eight
when atoms chemically join a reaction is produced as electrons are joining onto the opposite ... shell
atoms have a nucleus which is made up of protons and ... neutrons
protons have the same number as ... electrons
neutrons have no ... charge (they are neutral)
you find out the ... by subtracting the big number from the small neutrons
periodic table the big number is always going to be the ... mass
the small number is the protons which is equal to the ... electrons
smoking can cause the ... of ... to be damaged and prevent it from doing its job hairs of celia
what is the job of cilia? what can prevent this from happening? to sweep out all the mucus and dust.Smoking can stop this process from happening as the hairs will be damaged.
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