Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 538 · 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.🌈 In VIBGYOR, what number colour is red?
2. 2.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
3. 3.🌈 In VIBGYOR, what number colour is green?
4. 4.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
5. 5.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
6. 6.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
7. 7.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
8. 8.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
9. 9.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
10. 10.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sheet of white paper
12. 12.⚖️ 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 same glass (b) the time of day (c) the amount of water (d) the same window
13. 13.🛟 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
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
18. 18.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) bright sunlight (d) yeast
19. 19.🔮 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 magnet (d) a small rainbow
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
23. 23.True or false: a magnet is needed for the water rainbow. (a) False (b) True
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a sunny window (d) a sheet of white paper
25. 25.🌦️ 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
26. 26.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) yeast (d) a battery cell
27. 27.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a sheet of white paper (d) a clear glass of water
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
29. 29.⚖️ 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 measure it (b) we keep it the same (c) we change it
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) a clear glass of water
31. 31.⚖️ 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 time of day (c) the same window (d) brightness of rainbow
32. 32.⚖️ 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 keep it the same (c) we measure it
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
34. 34.⚖️ 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
35. 35.⚖️ 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
36. 36.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
37. 37.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sunny window (d) a balloon
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
40. 40.True or false: a mirror is needed for the water rainbow. (a) True (b) False

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