Y4 T5 Properties of Light and Shadows

Front

Properties of light

Back

Light travels in a straight line, can be reflected, can be refracted.

Front

Transparent object

Back

An object which allows all light to pass through it. No shadow is formed.

Front

Translucent object

Back

An object which allows some light to pass through it. The shadow formed is less clear.

Front

Opaque object

Back

An object which does not allow any light to pass through it. A clear shadow is formed.

Front

Factors affecting the size of a shadow

Back

Distance between the object and the light source, Distance between the object and the screen.

Front

Factors affecting the shape of a shadow

Back

Orientation of the object, Position of the light source.

Front

Face mirror

Back

Reflects light from our face to our eyes.

Front

Dental mirror

Back

Reflects light from the teeth and helps the dentist examine the condition of the teeth.

Front

Convex mirror

Back

Reflects light from blocked objects to our eyes.

Front

Periscope mirrors

Back

Two mirrors reflect obstructed light from an object to our eyes.