Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 988 · 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) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
3. 3.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
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 kept the same. (a) False (b) True
5. 5.⚖️ 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
6. 6.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
7. 7.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
8. 8.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same glass (b) the same window (c) brightness of rainbow (d) the same white paper
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
10. 10.⚖️ 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) brightness of rainbow (c) the same glass
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) blue (d) violet
12. 12.🧺 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) turmeric powder (d) bright sunlight
13. 13.🌈 In VIBGYOR, what number colour is indigo?
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) it turns brighter (d) the rainbow fades
16. 16.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
17. 17.⚖️ 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
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
19. 19.🛟 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 gets hot (d) so it does not fall
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
22. 22.⚖️ 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 window (c) the amount of water (d) the same glass
23. 23.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a clear glass of water (d) turmeric powder
24. 24.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
25. 25.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
26. 26.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sunny window (c) turmeric powder (d) a battery cell
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) yeast
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.⚖️ 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
30. 30.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
31. 31.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
32. 32.🌈 How many colours do we name in a rainbow (VIBGYOR)?
33. 33.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) bright sunlight (d) a sheet of white paper
35. 35.⚖️ 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 time of day
36. 36.True or false: yeast is needed for the water rainbow. (a) False (b) True
37. 37.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) bright sunlight (d) turmeric powder
40. 40.🌈 In VIBGYOR, what number colour is blue?

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