Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 674 · 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 clear glass of water (b) a sheet of white paper (c) a magnet (d) bright sunlight
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
5. 5.🧺 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
6. 6.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
7. 7.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
8. 8.⚖️ 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
9. 9.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
10. 10.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
11. 11.🌈 In VIBGYOR, what number colour is red?
12. 12.⚖️ 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
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
15. 15.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
16. 16.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
17. 17.⚖️ 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
18. 18.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
19. 19.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
20. 20.True or false: a magnet is needed for the water rainbow. (a) False (b) True
21. 21.⚖️ 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 same window (c) the amount of water (d) the same glass
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
23. 23.🧺 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
24. 24.⚖️ 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 time of day (c) the amount of water
25. 25.🌈 In VIBGYOR, what number colour is blue?
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
27. 27.True or false: a balloon is needed for the water rainbow. (a) False (b) True
28. 28.True or false: yeast is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
30. 30.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sheet of white paper
31. 31.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.⚖️ 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 change it (c) we keep it the same
34. 34.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a balloon (d) yeast
35. 35.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sunny window
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a sunny window (d) a clear glass of water
40. 40.True or false: a mirror is needed for the water rainbow. (a) False (b) True

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