WorksheetsLight and heat energy
Total questions: 15
Worksheet time: 8mins
How does light travel
As a wave in a wavy line
As a wave in a straight line
As a beam in a wavy line
As a bean in a straight line
An example of an opaque object is
a window
fog
air
a tree trunk
A transparent object
Lets all light pass through
Lets no light pass through
Lets some light pass through
The law of reflection states that
The incidence ray is equal to the normal
The incidence ray is equal to the reflected ray
The incidence angle is equal to the reflected angle
The incidence angle is different to the reflected angle
The phenomenon of light bending is called
Reflection
Refraction
Bending
Retraction
Light bends when travelling from one medium to another because
light travels at different speeds through different mediums
light is heavier in different mediums
of the angle at which you are standing
light is a different volume in different mediums
If an object is white, what colours are being reflected?
red and green
blue and green
no colour
all colours
If an object is white, what colours are being absorbed
red and green
blue and green
no colour
all colours
Which colours will a purple filter allow to pass?
Purple light
Blue light
Red light
Red and blue light
What colour will a red apple look under a blue filter?
Red
Black
Blue
Purple
What type of heat transfer is caused by electromagnetic radiation?
Conduction
Convection
Radiation
Thermal energy
A thermal insulator
allows heat to pass easily
speeds up the transfer of heat
slows the transfer of heat
blocks the transfer of heat
The measure of heat transfer is called
Temperature
Thermal energy
Heat energy
Heat transfer
Conduction is
The transfer of heat by touch
Molecules gaining heat from a flame
A current of moving air or water
The transfer of heat by direct molecular collision
A good example of a thermal conductor is
metal
glass
plastic
wood
