Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 488 · 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.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
2. 2.⚖️ 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
3. 3.⚖️ 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
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
6. 6.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) violet (d) blue
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) turmeric powder
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.True or false: a balloon is needed for the water rainbow. (a) True (b) False
12. 12.⚖️ 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 change it (c) we keep it the same
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
14. 14.🌈 In VIBGYOR, what number colour is yellow?
15. 15.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
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 glass (c) the same window (d) the time of day
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a battery cell
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) yeast
19. 19.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
20. 20.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
21. 21.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (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: brightness of rainbow is the one thing we change. (a) False (b) True
24. 24.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.🧺 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) bright sunlight (d) a mirror
27. 27.⚖️ 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
28. 28.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
29. 29.⚖️ 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 time of day (b) the same window (c) brightness of rainbow (d) the same glass
30. 30.🌈 In VIBGYOR, what number colour is orange?
31. 31.True or false: a mirror is needed for the water rainbow. (a) True (b) False
32. 32.⚖️ 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
33. 33.⚖️ 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 same window
34. 34.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
36. 36.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) False (b) True
39. 39.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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