# pyhsics

Dependant Variable
what you are going to measure
1 of 33
independant Variable
the thing you are going to change
2 of 33
accuracy
3 of 33
convection
the way in which heat is transfered through liquids and gases. heat travels from a hot region to a hold region.
4 of 33
conduction
the way in the which heat is transferred through solids. the hotter the object is the more the particles vibrate.
5 of 33
the process of emmiting waves. black surfaces are good at absorbing and emitting heat.
6 of 33
thermal insulators.
thermal insulators are things that prevent heat from moving from one place to another.
7 of 33
the way that heat energy is transferred from a hotter to a colder place.
8 of 33
thermal imaging camera
this detects how much infrared radiation is being given out by warm objects.
9 of 33
sankey diagram
a scale diagram that shows all the energy transfers taking place in a process.
10 of 33
wasted energy
where energy is transferred into unuseful forms
11 of 33
luminous
a luminous object gives of light.
12 of 33
give three examples of luminous light
the sun, the moon and a torch
13 of 33
non luminous
objects that do not give of light but we can see them because of lminous light sources.
14 of 33
what does a opaque object do when light hit it?
opaque objects block light and they then form a shadow.
15 of 33
opaque
objects which absorb scatter or reflect light and do not allow any light pass through
16 of 33
translucent
objects that transmit light but diffuse the light that passes through
17 of 33
normal
the imaginary line sy right angles to a surface where a light ray strikes it
18 of 33
reflection
the hange in direction of a light ray after it hits a surface and bounces off.
19 of 33
laterally inverted
when an image is reversed on a plane mirror meaning right becomes light and left becomes right.
20 of 33
refraction
the change in direction of a light ray.
21 of 33
wavelength
the distance between two individual points on the wave
22 of 33
critical angle
the smallest angle of incidence at which total internal reflection occurs.
23 of 33
total internal reflection
it is when all the light is reflected and the both angles are equal. this occurs in optical fibres.
24 of 33
primary colour
colours that cannot be created through the mixing of colours
25 of 33
secondary colour
they are colours that can be obtained by mixing from primary colours.
26 of 33
retina
the layer of light-sensetive cells found at the back of your retina
27 of 33
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
28 of 33
optical nerve
a paired sensory nerve that runs from each eye to the brain
29 of 33
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.
30 of 33
what is hot air rising called?
covection
31 of 33
what does a toaster use?
32 of 33
what is heat energy?
particles rubbing/vibrating together causing friction
33 of 33

## Other cards in this set

### Card 2

#### Front

independant Variable

#### Back

the thing you are going to change

accuracy

convection

conduction