Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 564 · 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? What do we do with “brightness of rainbow”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.⚖️ 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 time of day (c) brightness of rainbow (d) the same window
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
5. 5.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) violet (d) green
6. 6.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a magnet (c) bright sunlight (d) a sunny window
8. 8.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
9. 9.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
10. 10.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
11. 11.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a balloon (d) a sheet of white paper
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) yeast
13. 13.🌈 In VIBGYOR, what number colour is green?
14. 14.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a sunny window (d) turmeric powder
15. 15.⚖️ 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 window (b) the same glass (c) the amount of water (d) the time of day
16. 16.🌈 In VIBGYOR, what number colour is yellow?
17. 17.🌈 In VIBGYOR, what number colour is blue?
18. 18.⚖️ 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
19. 19.🌈 In VIBGYOR, what number colour is orange?
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
21. 21.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
22. 22.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
23. 23.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sunny window (d) a magnet
25. 25.⚖️ 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
26. 26.⚖️ 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 keep it the same (b) we change it (c) we measure it
27. 27.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
28. 28.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
29. 29.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
30. 30.🛟 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 does not fall (d) so it turns blue
31. 31.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
32. 32.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
33. 33.⚖️ 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) True (b) False
34. 34.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
35. 35.⚖️ 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 keep it the same (c) we change it
36. 36.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
38. 38.🌦️ 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
39. 39.🌈 How many colours do we name in a rainbow (VIBGYOR)?
40. 40.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed

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