Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 313 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) bright sunlight
2. 2.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) under the ground (c) straight above you (d) in front of you
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.⚖️ 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) True (b) False
6. 6.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) yellow (d) red
7. 7.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.⚖️ 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 amount of water (b) the same window (c) the same white paper (d) the time of day
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a balloon
12. 12.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
13. 13.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
14. 14.⚖️ 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 keep it the same (c) we change it
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) bright sunlight
16. 16.🌈 In VIBGYOR, what number colour is yellow?
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) False (b) True
18. 18.⚖️ 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 amount of water (b) the same window (c) brightness of rainbow (d) the time of day
19. 19.⚖️ 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 change it (b) we keep it the same (c) we measure it
20. 20.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
21. 21.True or false: a mirror is needed for the water rainbow. (a) True (b) False
22. 22.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
24. 24.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a magnet (c) a sheet of white paper (d) a sunny window
26. 26.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
27. 27.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
28. 28.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
29. 29.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) violet (d) red
30. 30.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) magnetism (d) reflection
31. 31.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
32. 32.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
33. 33.⚖️ 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
34. 34.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same white paper”? (a) we keep it the same (b) we measure it (c) we change it
36. 36.🌈 In VIBGYOR, what number colour is blue?
37. 37.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
38. 38.🧺 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
39. 39.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
40. 40.True or false: a balloon is not needed for the water rainbow. (a) False (b) True

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