Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 485 · 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.🧺 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) bright sunlight (d) a balloon
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) brightness of rainbow (b) the same window (c) the time of day (d) the same glass
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.⚖️ 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) True (b) False
5. 5.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
6. 6.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) a magnet (d) a clear glass of water
7. 7.⚖️ 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 time of day (b) brightness of rainbow (c) the same glass (d) the amount of water
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.⚖️ 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
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) True (b) False
11. 11.⚖️ 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
12. 12.🔮 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
13. 13.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
14. 14.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
15. 15.🌈 In VIBGYOR, what number colour is indigo?
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
18. 18.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
19. 19.⚖️ 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 keep it the same (b) we measure it (c) we change it
20. 20.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow
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) brightness of rainbow (b) the amount of water (c) the same window
22. 22.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
23. 23.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) a clear glass of water
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) a sheet of white paper
26. 26.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) a balloon
27. 27.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
28. 28.True or false: yeast is needed for the water rainbow. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a magnet (d) a sunny window
32. 32.🌈 In VIBGYOR, what number colour is blue?
33. 33.🌈 In VIBGYOR, what number colour is red?
34. 34.⚖️ 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
35. 35.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
36. 36.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
37. 37.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) behind you (d) in front of you
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) a sheet of white paper (d) bright sunlight
39. 39.🧺 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) a mirror (d) a clear glass of water
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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