Light Flashcards
What direction does light travel in ?
Light travels in straight lines
Why do we say luminous and nonluminous objects ?
We see luminous objects because they’re white sauce and we see nonluminous objects because they reflects light to our eyes
What is a ray ?
A ray is a straight line which shows the path of life
How do you shadows form ?
A shadow forms when an opaque object blocks light
What do smooth surfaces do ?
According to the law of reflection smooth surfaces reflects light
What is the law of reflection
Angle of incidence= angle Of reflection
Light is refracted when… ?
Why is refracted when it enters or leaves a transparent material
A light rate is bended towards where
A light ray bands towards the normal when it passes from air into a transparent material
A light ray bans away from where
 A light ray bins away from the normal when it passes from a transparent material into air
What is white light made from
White light is made up from all the colours of the spectrum from red to violet
White light can be split up using what
White light can be split up using a prism this is called dispersion
Why does dispersion happen
Dispersion happens because some colours of light I refractor more than others
What do colour filters do
Coloured filters transmit some colours of light and absorb others
What are the primary colours of light
Red blue and green
Why do you objects look different
Objects with different colours because they reflect some colours of light and absorb others
