Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 340 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a mirror (d) a sunny window
3. 3.True or false: a balloon is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a battery cell
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a balloon
6. 6.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
8. 8.⚖️ 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 window (b) brightness of rainbow (c) the same white paper (d) the amount of water
9. 9.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
10. 10.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
12. 12.⚖️ 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
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
15. 15.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) red (d) orange
16. 16.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
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) brightness of rainbow (b) the same glass (c) the amount of water
18. 18.True or false: yeast is needed for the water rainbow. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
21. 21.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
22. 22.🌈 In VIBGYOR, what number colour is yellow?
23. 23.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a balloon (d) a magnet
24. 24.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) tiny drops of water (d) only yellow light
25. 25.🔮 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
26. 26.🧺 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) yeast
27. 27.⚖️ 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) True (b) False
28. 28.🌈 In VIBGYOR, what number colour is indigo?
29. 29.⚖️ 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
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
31. 31.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
33. 33.🌈 In VIBGYOR, what number colour is violet?
34. 34.⚖️ 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
35. 35.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) yeast
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) brightness of rainbow (b) the same window (c) the same white paper (d) the same glass
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) turmeric powder
38. 38.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sheet of white paper (d) a balloon
39. 39.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a battery cell (c) a sunny window (d) yeast
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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