Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 169 · 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 of these is needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a battery cell (d) a mirror
2. 2.True or false: a magnet is needed for the water rainbow. (a) False (b) True
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a mirror (d) a sheet of white paper
5. 5.⚖️ 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 white paper (b) brightness of rainbow (c) the time of day (d) the amount of water
6. 6.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
7. 7.🌈 In VIBGYOR, what number colour is orange?
8. 8.⚖️ 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 measure it (b) we change it (c) we keep it the same
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.⚖️ 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 change it (b) we keep it the same (c) we measure it
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 keep it the same (b) we measure it (c) we change it
12. 12.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
13. 13.⚖️ 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 keep it the same (c) we change it
14. 14.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
15. 15.⚖️ 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) False (b) True
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
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) the same glass (b) the amount of water (c) brightness of rainbow
18. 18.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
19. 19.🧺 Do we need yeast 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) bright sunlight (b) a sunny window (c) a battery cell (d) a sheet of white paper
21. 21.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
22. 22.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a sunny window (d) turmeric powder
23. 23.⚖️ 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
24. 24.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it floats away (d) it turns brighter
25. 25.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
26. 26.🌈 In VIBGYOR, what number colour is violet?
27. 27.True or false: a balloon is needed for the water rainbow. (a) False (b) True
28. 28.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so it gets hot (d) so the Sun moves
29. 29.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
30. 30.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
31. 31.🌈 In VIBGYOR, what number colour is red?
32. 32.⚖️ 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
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) bright sunlight
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
35. 35.⚖️ 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) brightness of rainbow (d) the amount of water
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) yeast (d) a magnet
39. 39.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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