Topic: Sunlight — White or Coloured?
Sunlight appears white but is actually made up of seven colours. This can be seen in a rainbow or when light passes through a prism. This splitting of white light into colours is called dispersion.
1. Question: How many colours are present in a rainbow?
Answer: Seven
Explanation: A rainbow consists of seven colours — red, orange, yellow, green, blue, indigo, and violet.
2. Question: What is the natural phenomenon that shows sunlight is made of many colours?
Answer: Rainbow
Explanation: A rainbow appears when sunlight passes through water droplets, splitting into seven colours.
3. Question: What is the splitting of white light into colours called?
Answer: Dispersion
Explanation: The process of splitting white light into seven colours is called dispersion.
4. Question: Which device is used in the classroom to show the splitting of sunlight?
Answer: Prism
Explanation: A glass prism splits sunlight into its component colours.
5. Question: What is the shape of the spectrum formed by a rainbow?
Answer: Arc
Explanation: The rainbow appears in the shape of a large arc in the sky.
6. Question: Which colour is at the top of a rainbow?
Answer: Red
Explanation: The red colour appears at the top of the rainbow.
7. Question: Which colour is at the bottom of a rainbow?
Answer: Violet
Explanation: Violet colour appears at the bottom of the rainbow.
8. Question: What is the disc called which appears white when spun after painting seven colours?
Answer: Newton’s
Explanation: Newton’s disc shows that when the seven colours are mixed, they appear white.
9. Question: What is sunlight also called because it contains seven colours?
Answer: White
Explanation: Sunlight is called white light because it is a mixture of seven colours.
10. Question: What must be at your back when you see a rainbow?
Answer: Sun
Explanation: A rainbow is visible when the Sun is behind you.
If you want, I can now compile all these one-word question sets into a ready-to-print worksheet with answer key.
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