Unit 1 Revision

Colour red is used for, or as a symbol of: (choose all correct sentences)

• warning

• danger

• good luck

• wedding dresses

Colour green is used as a symbol of: (choose all correct sentences)

• peace

• traffic lights

• good luck

• safety

Colour blue is used in: (choose all correct sentences)

• logos

• flags

• uniforms

• road signs

In the text colour orange is described as ....

• dark

• bright

• visible

• light

In the text colour yellow is described as ....

• dark

• bright

• visible

• light

Choose all the characteristics of colour violet

• It was a sign of luxury

• In some countries it is the colour of death

• It is one of the oldest colours

• It attracts attention.

Video

Ultraviolet light is visible to humans

• true

• false

• sometimes

• we don't know

Video

A snake sees infrared light as dark red

• true

• false

• sometimes

• we don't know

Video

Being colour-blind can be dangerous

• true

• false

• never

• we don't know

Video

Ultraviolet light is not visible to bees

• true

• false

• sometimes

• we don't know