Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 537 · 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 rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) False (b) True
5. 5.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
6. 6.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) violet (d) yellow
7. 7.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
8. 8.True or false: yeast is not needed for the water rainbow. (a) True (b) False
9. 9.True or false: yeast is needed for the water rainbow. (a) True (b) False
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) a sunny window (d) a clear glass of water
12. 12.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
15. 15.⚖️ 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
16. 16.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
17. 17.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
18. 18.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
20. 20.🌈 In VIBGYOR, what number colour is orange?
21. 21.⚖️ 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 same window (c) brightness of rainbow
22. 22.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) yeast (d) a sheet of white paper
24. 24.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) behind you (d) under the ground
25. 25.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) yeast (c) a clear glass of water (d) a magnet
26. 26.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) turmeric powder (c) a magnet (d) yeast
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) a sunny window (d) bright sunlight
28. 28.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red
30. 30.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
31. 31.🌈 In VIBGYOR, what number colour is red?
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sunny window (c) bright sunlight (d) a clear glass of water
33. 33.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
34. 34.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
35. 35.⚖️ 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 white paper (c) the same glass (d) the time of day
36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) yeast (d) a clear glass of water
38. 38.🧺 Do we need bright sunlight 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) a sheet of white paper (b) a clear glass of water (c) a mirror (d) a sunny window
40. 40.True or false: a magnet is needed for the water rainbow. (a) False (b) True

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