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Dependant Variable
what you are going to measure
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independant Variable
the thing you are going to change
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accuracy
how close your answer is to the actual answer
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convection
the way in which heat is transfered through liquids and gases. heat travels from a hot region to a hold region.
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conduction
the way in the which heat is transferred through solids. the hotter the object is the more the particles vibrate.
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radiation
the process of emmiting waves. black surfaces are good at absorbing and emitting heat.
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thermal insulators.
thermal insulators are things that prevent heat from moving from one place to another.
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infrared radiation
the way that heat energy is transferred from a hotter to a colder place.
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thermal imaging camera
this detects how much infrared radiation is being given out by warm objects.
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sankey diagram
a scale diagram that shows all the energy transfers taking place in a process.
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wasted energy
where energy is transferred into unuseful forms
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luminous
a luminous object gives of light.
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give three examples of luminous light
the sun, the moon and a torch
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non luminous
objects that do not give of light but we can see them because of lminous light sources.
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what does a opaque object do when light hit it?
opaque objects block light and they then form a shadow.
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opaque
objects which absorb scatter or reflect light and do not allow any light pass through
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translucent
objects that transmit light but diffuse the light that passes through
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normal
the imaginary line sy right angles to a surface where a light ray strikes it
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reflection
the hange in direction of a light ray after it hits a surface and bounces off.
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laterally inverted
when an image is reversed on a plane mirror meaning right becomes light and left becomes right.
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refraction
the change in direction of a light ray.
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wavelength
the distance between two individual points on the wave
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critical angle
the smallest angle of incidence at which total internal reflection occurs.
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total internal reflection
it is when all the light is reflected and the both angles are equal. this occurs in optical fibres.
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primary colour
colours that cannot be created through the mixing of colours
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secondary colour
they are colours that can be obtained by mixing from primary colours.
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retina
the layer of light-sensetive cells found at the back of your retina
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rods
the retina has lots of light sensitive cells (rods and cones) rods are mainly aroung the edge of the retina and are sensitive to dim light
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optical nerve
a paired sensory nerve that runs from each eye to the brain
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heat energy- how much heat energy do you need depending on somethings size?
the amount of heat energy need to heat something depends on how much stuff is being heated aswell as the temperature you want it to be.
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what is hot air rising called?
covection
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what does a toaster use?
radiation
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what is heat energy?
particles rubbing/vibrating together causing friction
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Other cards in this set

Card 2

Front

independant Variable

Back

the thing you are going to change

Card 3

Front

accuracy

Back

Preview of the front of card 3

Card 4

Front

convection

Back

Preview of the front of card 4

Card 5

Front

conduction

Back

Preview of the front of card 5
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