Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 902 · 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? True or false: the same glass is kept the same. (a) False (b) True
2. 2.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny drops of water (d) tiny bits of dust
3. 3.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
4. 4.⚖️ 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 glass (d) the same window
5. 5.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
6. 6.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
7. 7.True or false: a sheet of white paper is 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? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
9. 9.⚖️ 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 change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a clear glass of water (d) a mirror
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a sunny window (d) bright sunlight
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.⚖️ 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
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
15. 15.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
16. 16.🧺 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 sheet of white paper (d) a battery cell
17. 17.🌈 How many colours do we name in a rainbow (VIBGYOR)?
18. 18.⚖️ 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
19. 19.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
22. 22.🔮 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
23. 23.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
24. 24.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
25. 25.🌈 In VIBGYOR, what number colour is indigo?
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) a balloon
28. 28.🌦️ 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
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) yeast (d) a clear glass of water
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a magnet (d) a clear glass of water
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a balloon (c) a sunny window (d) a sheet of white paper
34. 34.⚖️ 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 keep it the same (c) we change it
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
37. 37.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
38. 38.True or false: yeast is needed for the water rainbow. (a) False (b) True
39. 39.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
40. 40.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) a balloon (d) turmeric powder

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