Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 328 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🧺 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 sheet of white paper (d) a battery cell
4. 4.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
5. 5.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) in front of you (d) behind you
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) look at it in a mirror (d) never look at the Sun
7. 7.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
8. 8.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
10. 10.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) violet (d) orange
11. 11.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a balloon
12. 12.🧺 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) turmeric powder (d) bright sunlight
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
14. 14.⚖️ 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 change it (c) we keep it the same
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
16. 16.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a clear glass of water (d) a balloon
17. 17.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
18. 18.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a magnet
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
21. 21.🌈 In VIBGYOR, what number colour is red?
22. 22.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
23. 23.⚖️ 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 glass (c) the amount of water (d) the same white paper
24. 24.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) violet (d) green
25. 25.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
26. 26.🌈 In VIBGYOR, what number colour is yellow?
27. 27.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
29. 29.⚖️ 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 keep it the same (c) we change it
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
31. 31.⚖️ 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 white paper (c) brightness of rainbow
32. 32.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sunny window
36. 36.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
37. 37.⚖️ 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 change it (c) we keep it the same
38. 38.True or false: yeast is not needed for the water rainbow. (a) True (b) False
39. 39.🌈 In VIBGYOR, what number colour is orange?
40. 40.True or false: a battery cell is needed for the water rainbow. (a) False (b) True

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