Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 819 · 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.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
3. 3.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) yeast (d) a battery cell
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a mirror (c) a sheet of white paper (d) bright sunlight
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
9. 9.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) green (d) blue
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
12. 12.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
13. 13.🌈 In VIBGYOR, what number colour is green?
14. 14.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
15. 15.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🌈 In VIBGYOR, what number colour is blue?
17. 17.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a mirror (d) bright sunlight
19. 19.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.⚖️ 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) the same glass (c) brightness of rainbow (d) the same window
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a balloon (c) a sunny window (d) a sheet of white paper
23. 23.True or false: a magnet is needed for the water rainbow. (a) True (b) False
24. 24.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
25. 25.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
26. 26.🌈 In VIBGYOR, what number colour is orange?
27. 27.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
28. 28.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
29. 29.🌈 In VIBGYOR, what number colour is yellow?
30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so the Sun moves (c) so it turns blue (d) so it does not fall
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) yeast
34. 34.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) look at it through glass (d) stare at the Sun
35. 35.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) under the ground (d) straight above you
36. 36.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
37. 37.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.True or false: a mirror is needed for the water rainbow. (a) True (b) False
40. 40.🧺 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) bright sunlight (d) a battery cell

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