WorksheetsUnit 6_ Lights
Total questions: 24
Worksheet time: 13mins
What happen when a light ray reach a plane surface
reflection
refraction
dispersion
spectrum
formation of asteroid
Reflection is when....
a light ray reaches a plane surface and bounces off
a light ray reaches any surface and bounces off
a light ray reaches a plane surface and changes direction
a light ray reaches any surface and changes direction
Refraction is when....
a light ray reaches a plane surface and bounces off
a light ray reaches any surface and bounces off
a light ray reaches a plane surface and changes direction
a light ray reaches any surface and changes direction
What causes refraction of light?
the change of speed of light
the change of colour of light
the change of direction of light
all of the answers are incorrect
What is medium?
The material light passes through is medium.
The material that light can't passes through
The material that prevent light from passing through
Compare the speed of light in water and the speed of light in air
the speed of light in water < the speed of light in air
the speed of light in water > the speed of light in air
the speed of light in water = the speed of light in air
Compare the speed of light in water and the speed of light in glass
the speed of light in glass < the speed of light in water
the speed of light in glass > the speed of light in water
the speed of light in glass = the speed of light in water
Compare the speed of light in air and the speed of light in glass
the speed of light in glass < the speed of light in air
the speed of light in glass > the speed of light in air
the speed of light in glass = the speed of light in air
When the light ray passes from air to the water, the light ray is bent
toward the normal
away from the normal
When the light ray passes from glass to the air, the light ray is bent
toward the normal
away from the normal
dispersion is when the light
bouncing off a plane surface
splitting light into different colours
changes direction when passes between two different medium
all the answers are incorrect
The range of colours that can be seen in white light is called...
a spectrum
a triangular prism
a dispersion
a light ray
What name is given to white light being split into different colours
refraction
reflection
dispersion
conduction
three primary colours of light are
red, green and blue
red, yellow and blue
red, yellow and green
blue, yellow and green
Red + green = ...
yellow
magenta
cyan
white
Red + blue = ...
yellow
magenta
cyan
white
Blue + green = ...
yellow
magenta
cyan
white
Red + blue + green = ...
yellow
magenta
cyan
white
Subtraction of colour is when...
some colours of light get through a coloured filter, some colours of the light is absorbed by the filter.
light is reflected from a plane surface
light changes direction when passes between two different mediums
light is absorbed by a plane surface
An object that reflects red light has
red colour
yellow colour
blue colour
indigo colour
What are galaxies?
Galaxies are collections of dust, gas and stars that are held together by gravity.
Galaxies are collections of stars that are held together by gravity.
Galaxies are collections of rocks that are held together by gravity.
Galaxies are collections of dust that are held together by gravity.
The force that holds the parts of a galaxy together
gravity force
electrostatic force
magnetic force
Asteroid are made of
rocks that are left over after the formation of Solar System
dust, gas and stars
dust that are left over after the formation of Solar System
Many asteroids are in....
between the orbits of Mars and Jupiter
asteroid belt
Ceres
the orbits between Jupiter and Venus
