Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 104 · 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.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a clear glass of water (d) a sheet of white paper
3. 3.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
4. 4.⚖️ 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 same window (b) the amount of water (c) brightness of rainbow
5. 5.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a battery cell
8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
9. 9.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
10. 10.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
11. 11.🌈 In VIBGYOR, what number colour is orange?
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
16. 16.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) turmeric powder (d) a clear glass of water
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) bright sunlight
19. 19.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
20. 20.True or false: a balloon is needed for the water rainbow. (a) False (b) True
21. 21.🌈 In VIBGYOR, what number colour is yellow?
22. 22.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
23. 23.⚖️ 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 glass (b) the amount of water (c) the same window (d) brightness of rainbow
24. 24.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
25. 25.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
26. 26.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) snow falling (d) a magnet
27. 27.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
28. 28.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
29. 29.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
30. 30.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) yeast (d) bright sunlight
31. 31.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a clear glass of water (c) a mirror (d) a magnet
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) a sheet of white paper
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) bright sunlight
35. 35.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
37. 37.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
38. 38.🌈 In VIBGYOR, what number colour is blue?
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) False (b) True
40. 40.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed

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