Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 741 · 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 “the time of day”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) look at it in a mirror (d) stare at the Sun
3. 3.⚖️ 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) True (b) False
4. 4.🌈 In VIBGYOR, what number colour is blue?
5. 5.⚖️ 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
6. 6.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
7. 7.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the paper makes colours (d) the water is coloured
9. 9.⚖️ 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) True (b) False
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) a magnet
11. 11.⚖️ 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
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.⚖️ 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) True (b) False
14. 14.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
15. 15.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a balloon (c) a sheet of white paper (d) a clear glass of water
16. 16.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
17. 17.⚖️ 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 glass
18. 18.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) turmeric powder
21. 21.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a sunny window
22. 22.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
23. 23.⚖️ 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 same glass (b) the same white paper (c) the amount of water (d) the time of day
24. 24.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) it turns all red (d) the rainbow fades
25. 25.⚖️ 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) True (b) False
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a mirror
27. 27.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
28. 28.🌈 In VIBGYOR, what number colour is indigo?
29. 29.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a magnet (d) yeast
30. 30.🌈 In VIBGYOR, what number colour is orange?
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) blue (d) violet
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
33. 33.⚖️ 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
34. 34.⚖️ 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) the amount of water (c) brightness of rainbow
35. 35.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
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 same glass (b) the same white paper (c) the same window (d) brightness of rainbow
38. 38.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a balloon (d) a magnet
39. 39.🌈 In VIBGYOR, what number colour is violet?
40. 40.⚖️ 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

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