science Flashcards
memorise (23 cards)
what does absobed mean
when the wave can be absorbed by the material
transmission
the wave can pass through the material
reflection
when the wave can bounce back off the material
specular rfelection
Specular reflection occurs when light…
Hits smooth surfaces
Bounces off in a predictable way
diffused reflection
Diffuse reflection occurs when light…
Hits rough surfaces
Bounces off in a random way
what is the aerobic respiration formula
Glucose+oxygen—> carbon dioxide+water (+energy)
what is the anaerobic respiration formula
Glucose—> lactic acid (+energy)
do marathon runners run with anaerobic or aerobic respiration
aerobic
what is the formula for fermention
glucose enthanol+ carbon dioxide (+ energy)
where does aerobic respiration take place in the cell
mitochondria
where does anaerobic respiration take place in the cell
cytoplasym
where does gas exchange happen
in the aevoli
where is oxygen gas transported in the body
red blood cells
what are the colours that make up white light
red
orange
yellow
green
blue
violet
what is refraction
refration happens when light changes direction/bends when it moves from one material to another
what is a PH scale
a ph scale shows how acid a substance is
reaction of metals with acids
Acids react with some metals to produce salts and hydrogen
what is the word equation for metal and acids reacting
metal+acid–> salts+ hydrogen
stationary
so its distance does not change as the time taken increases. This means that for a stationary object, the line is flat and the gradient (the speed) is zero.
constant
it is shown with a straight diagonal line, where the
gradient
of the line tells you the speed.
what colour does red and green light make
yellow
what colour does red and blue make
magenta
what colour does green and blue make
cyan
