Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 247 · 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? True or false: the same glass is kept the same. (a) False (b) True
2. 2.🧺 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 sunny window (d) a magnet
3. 3.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
4. 4.⚖️ 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 amount of water (c) the same glass (d) brightness of rainbow
5. 5.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) never look at the Sun (d) look at it in a mirror
8. 8.⚖️ 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 keep it the same (b) we change it (c) we measure it
9. 9.⚖️ 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
10. 10.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
11. 11.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
12. 12.🌦️ 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
13. 13.⚖️ 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) brightness of rainbow (b) the same glass (c) the time of day (d) the amount of water
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
15. 15.☀️ 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
16. 16.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
17. 17.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
18. 18.🧺 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 sheet of white paper (d) a battery cell
19. 19.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a balloon (d) a sunny window
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
21. 21.True or false: yeast is needed for the water rainbow. (a) False (b) True
22. 22.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
24. 24.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) yeast (d) a magnet
25. 25.🌈 In VIBGYOR, what number colour is green?
26. 26.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
27. 27.True or false: a mirror is needed for the water rainbow. (a) False (b) True
28. 28.⚖️ 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 keep it the same (c) we measure it
29. 29.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Do we need a mirror 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? True or false: the same window is kept the same. (a) False (b) True
33. 33.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it does not fall (c) so the Sun moves (d) so it gets hot
34. 34.🧺 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 mirror
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
38. 38.⚖️ 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 change it (b) we keep it the same (c) we measure it
39. 39.True or false: a balloon is needed for the water rainbow. (a) True (b) False
40. 40.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False

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