Light - End of Unit

Select two examples of human-made light sources

• candles
• fireflies
• bulbs

• sunlight

Select two examples of natural light sources

• torch

• northern lights

• laptop screen

• lightning

Which description describes a light source?

• An object which takes in light

• An object which reflects light

• An object which gives out light

The​ (a)   is the coloured part of the eye and decides how much​ (b)   is let into the eye.

• iris
• light
• pupil
• dust

Light goes through the structure of the eye in this order:

• Retina

• Lens

• Iris

• Pupil

• Cornea

The retina sees the world _ _ _ _ _ _ down

Luminous objects:

• Take in light

• Give out light

• Reflect light

Organise these options into the right categories

Groups:

(a) Luminous objects

,

(b) Objects that reflect

• Firefly
• Laser
• Glass
• Window
• Light bulb
• Moon
• Mirror
• Shiny metal surface
• Polished stone
• Star
• Candle
• Water
• Torch

• Still lake
• LED bulb

• Sun

Light travels in ________ lines

Where might you find a periscope?

• Car

• Submarine

• Aeroplane

• Sailing boat