Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 193 · 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 turns blue (b) so the Sun moves (c) so it does not fall (d) so it gets hot
2. 2.🌈 In VIBGYOR, what number colour is violet?
3. 3.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a balloon (d) a battery cell
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.⚖️ 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) True (b) False
6. 6.🔮 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
7. 7.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sheet of white paper
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a clear glass of water
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
10. 10.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
11. 11.True or false: yeast is needed for the water rainbow. (a) False (b) True
12. 12.True or false: a balloon is needed for the water rainbow. (a) True (b) False
13. 13.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a battery cell (c) a sunny window (d) bright sunlight
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) brightness of rainbow (b) the same window (c) the amount of water
16. 16.⚖️ 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 window (c) the time of day (d) the same white paper
17. 17.🌈 In VIBGYOR, what number colour is red?
18. 18.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a sheet of white paper (d) a clear glass of water
19. 19.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
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 measure it (b) we change it (c) we keep it the same
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 time of day (c) brightness of rainbow
22. 22.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
24. 24.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) only yellow light (d) tiny drops of water
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.⚖️ 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) False (b) True
27. 27.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
30. 30.🌈 How many colours do we name in a rainbow (VIBGYOR)?
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a balloon (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 “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
35. 35.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a magnet (d) a sunny window
36. 36.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
37. 37.🌈 In VIBGYOR, what number colour is yellow?
38. 38.🌈 In VIBGYOR, what number colour is blue?
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
40. 40.⚖️ 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 window (b) the same white paper (c) the amount of water (d) brightness of rainbow

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