Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 928 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a magnet
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
5. 5.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) magnetism (d) reflection
6. 6.⚖️ 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
7. 7.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) yeast (d) a battery cell
8. 8.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
9. 9.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
10. 10.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
11. 11.⚖️ 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) True (b) False
12. 12.⚖️ 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) False (b) True
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it in a mirror (d) look at it through glass
16. 16.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
17. 17.🌈 In VIBGYOR, what number colour is green?
18. 18.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
19. 19.🌈 In VIBGYOR, what number colour is red?
20. 20.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
21. 21.⚖️ 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
22. 22.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a mirror (d) a sheet of white paper
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a balloon
24. 24.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
25. 25.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so it gets hot (d) so the Sun moves
26. 26.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
27. 27.🌈 In VIBGYOR, what number colour is violet?
28. 28.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
29. 29.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
30. 30.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sunny window
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) green (d) blue
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) bright sunlight (d) a clear glass of water
33. 33.🌈 In VIBGYOR, what number colour is blue?
34. 34.True or false: a balloon is needed for the water rainbow. (a) True (b) False
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a battery cell (d) a sheet of white paper
36. 36.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
37. 37.🌈 In VIBGYOR, what number colour is indigo?
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the amount of water (c) the same glass
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) False (b) True

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