Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 432 · 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? Which of these is the one thing we change? (a) brightness of rainbow (b) the amount of water (c) the time of day (d) the same white paper
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 glass”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.True or false: a mirror is needed for the water rainbow. (a) True (b) False
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? What do we do with “the same white paper”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
7. 7.🌈 In VIBGYOR, what number colour is yellow?
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
9. 9.🌈 In VIBGYOR, what number colour is indigo?
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) a mirror (d) bright sunlight
11. 11.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a clear glass of water (c) a mirror (d) a battery cell
12. 12.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
13. 13.⚖️ 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 change it (c) we measure it
14. 14.⚖️ 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
15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow
18. 18.⚖️ 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 measure it (b) we keep it the same (c) we change it
19. 19.⚖️ 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 amount of water (b) the time of day (c) brightness of rainbow
20. 20.🛟 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
21. 21.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a mirror (c) a battery cell (d) turmeric powder
22. 22.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a sunny window
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) straight above you (d) in front of you
24. 24.⚖️ 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) True (b) False
25. 25.🌈 In VIBGYOR, what number colour is red?
26. 26.🔮 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
27. 27.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
28. 28.🌈 In VIBGYOR, what number colour is orange?
29. 29.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a battery cell (d) bright sunlight
30. 30.⚖️ 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 same glass (c) the amount of water
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) yeast (c) a sheet of white paper (d) a mirror
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
34. 34.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
35. 35.🧺 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) a magnet
36. 36.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured
38. 38.⚖️ 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
39. 39.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
40. 40.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation

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