Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 333 · 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 through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
3. 3.⚖️ 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 amount of water (b) the same glass (c) brightness of rainbow
4. 4.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
5. 5.⚖️ 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 keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) yeast (d) bright sunlight
7. 7.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
8. 8.🌈 In VIBGYOR, what number colour is green?
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.True or false: yeast is not needed for the water rainbow. (a) True (b) False
11. 11.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
13. 13.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
15. 15.🌈 In VIBGYOR, what number colour is indigo?
16. 16.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a clear glass of water (c) a magnet (d) a balloon
17. 17.🌈 In VIBGYOR, what number colour is blue?
18. 18.🧺 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 magnet (d) bright sunlight
19. 19.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) yeast (d) a battery cell
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
21. 21.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
22. 22.🧺 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 battery cell (d) a clear glass of water
23. 23.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
24. 24.⚖️ 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 white paper
25. 25.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
26. 26.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
27. 27.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
28. 28.⚖️ 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
29. 29.🧺 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) a balloon (d) a sunny window
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a balloon (d) a sunny window
32. 32.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
33. 33.⚖️ 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 time of day (c) the amount of water
34. 34.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
35. 35.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
36. 36.⚖️ 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) the same glass (c) brightness of rainbow (d) the amount of water
37. 37.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) yellow (d) violet
38. 38.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
39. 39.☀️ 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
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) bright sunlight

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