Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 848 · 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.⚖️ 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
2. 2.True or false: yeast is needed for the water rainbow. (a) True (b) False
3. 3.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) tiny drops of water (d) only yellow light
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.True or false: a mirror is needed for the water rainbow. (a) True (b) False
6. 6.⚖️ 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 same glass (b) the time of day (c) the same white paper (d) the amount of water
7. 7.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
8. 8.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
10. 10.🧺 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 clear glass of water
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
12. 12.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
14. 14.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
15. 15.⚖️ 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 white paper (b) the time of day (c) the same window (d) brightness of rainbow
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) turmeric powder
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
18. 18.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
19. 19.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
20. 20.⚖️ 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
21. 21.⚖️ 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 change it (b) we measure it (c) we keep it the same
22. 22.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
23. 23.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a mirror (c) yeast (d) a sunny window
24. 24.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) violet (d) red
25. 25.🌈 In VIBGYOR, what number colour is blue?
26. 26.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
27. 27.True or false: yeast is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
30. 30.⚖️ 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
31. 31.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
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 same window (c) brightness of rainbow
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sheet of white paper (d) a magnet
34. 34.⚖️ 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 measure it (c) we keep it the same
35. 35.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) yeast (d) a magnet
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) a sheet of white paper
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sheet of white paper (c) bright sunlight (d) a sunny window
38. 38.🌈 In VIBGYOR, what number colour is yellow?
39. 39.⚖️ 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
40. 40.🧺 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 sunny window (d) turmeric powder

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