Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 666 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
2. 2.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) bright sunlight (d) a magnet
3. 3.⚖️ 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 amount of water (c) brightness of rainbow (d) the same white paper
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a sunny window
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
8. 8.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) refraction (d) evaporation
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a sunny window
10. 10.🌈 In VIBGYOR, what number colour is red?
11. 11.⚖️ 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 white paper (c) the same window (d) the same glass
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🔮 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 small rainbow (d) a magnet
14. 14.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
15. 15.🧺 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 battery cell
16. 16.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) a clear glass of water (d) a magnet
17. 17.🌈 In VIBGYOR, what number colour is violet?
18. 18.🌈 In VIBGYOR, what number colour is orange?
19. 19.True or false: yeast is not needed for the water rainbow. (a) False (b) True
20. 20.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
21. 21.⚖️ 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
22. 22.⚖️ 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 keep it the same (c) we measure it
23. 23.⚖️ 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 window
24. 24.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a sunny window
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) bright sunlight
26. 26.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.🧺 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 balloon (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 time of day is the one thing we change. (a) False (b) True
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.⚖️ 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
33. 33.⚖️ 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 change it (c) we keep it the same
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 keep it the same (b) we measure it (c) we change it
35. 35.🧺 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 magnet
36. 36.🧺 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) turmeric powder (d) bright sunlight
37. 37.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
39. 39.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns all red (d) it turns brighter
40. 40.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed

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