Light and heat energy

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