Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 681 · 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.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
4. 4.🌈 In VIBGYOR, what number colour is indigo?
5. 5.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a mirror (d) a battery cell
6. 6.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
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 kept the same. (a) False (b) True
8. 8.⚖️ 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 glass
9. 9.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
10. 10.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
13. 13.🌈 In VIBGYOR, what number colour is blue?
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
16. 16.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) red (d) green
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a magnet (c) a sunny window (d) a sheet of white paper
18. 18.⚖️ 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
19. 19.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) bright sunlight (c) a sunny window (d) a clear glass of water
21. 21.🌈 In VIBGYOR, what number colour is violet?
22. 22.⚖️ 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 window (c) brightness of rainbow (d) the same glass
23. 23.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
24. 24.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) many colours mixed (d) only yellow light
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.⚖️ 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
28. 28.⚖️ 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 change it (c) we keep it the same
29. 29.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
30. 30.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
31. 31.⚖️ 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
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) violet (d) red
33. 33.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a magnet (d) turmeric powder
34. 34.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
35. 35.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
36. 36.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
37. 37.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
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 what we measure. (a) True (b) False
39. 39.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a balloon
40. 40.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed

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