Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 551 · 40 questions

What you do (Bend and split): 1. Fill a clear glass with water and set it on a steady, sunny windowsill. 2. Put white paper on the floor where the sunlight passes through the glass. 3. Move the paper or glass slowly until a rainbow appears. 4. Never look straight at the Sun.

1. 1.🌈 In VIBGYOR, what number colour is indigo?
2. 2.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a balloon (d) a sheet of white paper
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is the one thing we change? (a) the same window (b) the amount of water (c) the same white paper (d) the same glass
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
7. 7.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) blue (d) red
12. 12.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same glass”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a sunny window (d) turmeric powder
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same white paper (b) brightness of rainbow (c) the same window (d) the amount of water
16. 16.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
17. 17.True or false: a magnet is needed for the water rainbow. (a) True (b) False
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) snow falling (d) a shadow of ice
21. 21.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
22. 22.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a mirror (d) a sheet of white paper
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sheet of white paper (d) a sunny window
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a battery cell (c) a sunny window (d) a clear glass of water
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) False (b) True
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) the amount of water (b) brightness of rainbow (c) the same window
29. 29.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) False (b) True
31. 31.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) bright sunlight (c) turmeric powder (d) a magnet
33. 33.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
34. 34.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
35. 35.🌈 In VIBGYOR, what number colour is orange?
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) a magnet
38. 38.🌈 In VIBGYOR, what number colour is blue?
39. 39.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) yellow (c) orange (d) violet

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