Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 519 · 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) bright sunlight (b) a clear glass of water (c) a magnet (d) a sheet of white paper
2. 2.⚖️ 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
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.⚖️ 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
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) False (b) True
7. 7.⚖️ 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) True (b) False
8. 8.🌈 In VIBGYOR, what number colour is violet?
9. 9.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so the Sun moves (c) so it gets hot (d) so it turns blue
11. 11.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
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 white paper”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.🧺 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) turmeric powder
14. 14.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
15. 15.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
17. 17.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
18. 18.⚖️ 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 amount of water (c) the same window (d) the time of day
19. 19.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
22. 22.🌈 In VIBGYOR, what number colour is yellow?
23. 23.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
24. 24.🔮 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
25. 25.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
26. 26.True or false: a balloon is needed for the water rainbow. (a) True (b) False
27. 27.⚖️ 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 window
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a mirror (d) a sheet of white paper
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) bright sunlight
30. 30.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
32. 32.🌈 In VIBGYOR, what number colour is red?
33. 33.⚖️ 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
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) brightness of rainbow (b) the amount of water (c) the same glass
35. 35.⚖️ 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
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is the one thing we change. (a) True (b) False
37. 37.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
38. 38.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the time of day
40. 40.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) refraction (c) reflection (d) evaporation

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