rainbows & colours
6 free practice questions with explanations
PassNova has 6 free Kids Light & Colour practice questions on rainbows & colours, each with a clear explanation. Practise them in the browser with instant feedback — 100% free, no sign-up, on any device. Updated for 2026.
rainbows & colours: example questions & answers
6 worked examples with answers and explanations below. Practise them in the browser with instant feedback on every answer.
How many main colours does a rainbow have?
- AThree
- BOne
- CSeven✓
- DTen
Answer: A rainbow has seven main colours: red, orange, yellow, green, blue, indigo and violet.
What kind of weather helps a rainbow appear?
- AJust snow
- BA dark, dry night
- COnly strong wind
- DSunshine and rain together✓
Answer: Rainbows appear when the Sun shines while it is raining, and light passes through the raindrops.
Which of these is a colour of the rainbow?
- ABlack
- BGrey
- CBrown
- DGreen✓
Answer: Green is one of the seven rainbow colours; brown, black and grey are not.
What is the colour along the very top of a rainbow?
- ABlue
- BRed✓
- CGreen
- DViolet
Answer: Red is always the colour on the outside top curve of a rainbow.
What is white light, like sunlight, really made of?
- ALots of colours mixed together✓
- BWater
- COnly the colour white
- DJust black and grey
Answer: White light is actually made of all the rainbow colours mixed together.
What shape is a rainbow in the sky?
- AA square
- BA straight line
- CA curve or arch✓
- DA triangle
Answer: A rainbow makes a lovely curved arch shape across the sky.