Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 895 · 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 keep it the same (b) we change it (c) we measure it
2. 2.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
3. 3.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a mirror
5. 5.True or false: a balloon is needed for the water rainbow. (a) True (b) False
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
9. 9.🌈 In VIBGYOR, what number colour is red?
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a sheet of white paper (d) yeast
11. 11.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
12. 12.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
13. 13.🧺 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 magnet (d) a clear glass of water
14. 14.⚖️ 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
15. 15.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
16. 16.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
17. 17.⚖️ 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 change it (c) we measure it
18. 18.True or false: yeast is not 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? Which of these is the one thing we change? (a) brightness of rainbow (b) the amount of water (c) the time of day (d) the same glass
20. 20.🌈 In VIBGYOR, what number colour is yellow?
21. 21.⚖️ 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
22. 22.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
23. 23.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a magnet (d) a clear glass of water
24. 24.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
26. 26.True or false: a mirror is needed for the water rainbow. (a) True (b) False
27. 27.⚖️ 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 change it (b) we measure it (c) we keep it the same
28. 28.⚖️ 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 same white paper (b) brightness of rainbow (c) the amount of water
29. 29.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
30. 30.🌈 In VIBGYOR, what number colour is blue?
31. 31.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
32. 32.⚖️ 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) False (b) True
33. 33.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
34. 34.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
35. 35.🌈 In VIBGYOR, what number colour is violet?
36. 36.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
37. 37.⚖️ 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) brightness of rainbow (c) the same glass (d) the same white paper
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a balloon
40. 40.🧺 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 magnet

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