Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 894 · 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.⚖️ 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
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
3. 3.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
5. 5.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
6. 6.⚖️ 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 window (b) the amount of water (c) the same glass (d) brightness of rainbow
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
9. 9.🌈 In VIBGYOR, what number colour is red?
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sunny window
11. 11.🌈 In VIBGYOR, what number colour is yellow?
12. 12.🧺 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 magnet
13. 13.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
14. 14.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
15. 15.🛟 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 the Sun moves (d) so it gets hot
16. 16.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) behind you (d) in front of you
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? What do we do with “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
20. 20.🧺 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
21. 21.⚖️ 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
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a magnet
23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) turmeric powder (d) a sheet of white paper
26. 26.⚖️ 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 time of day (b) the amount of water (c) the same window (d) the same glass
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) bright sunlight (d) a sunny window
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 kept the same. (a) True (b) False
29. 29.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
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.⚖️ 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
32. 32.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
33. 33.True or false: a mirror is needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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 keep it the same (b) we measure it (c) we change it
35. 35.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
36. 36.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
37. 37.⚖️ 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 keep it the same (c) we measure it
38. 38.True or false: yeast is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a clear glass of water (d) a sunny window
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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