Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 571 · 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 white paper is the one thing we change. (a) True (b) False
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
3. 3.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
4. 4.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
5. 5.🌈 In VIBGYOR, what number colour is green?
6. 6.🌈 How many colours do we name in a rainbow (VIBGYOR)?
7. 7.⚖️ 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 amount of water (c) the same white paper (d) brightness of rainbow
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a magnet
9. 9.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) orange (d) red
10. 10.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) a magnet (d) a balloon
11. 11.🧺 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
12. 12.True or false: a balloon is needed for the water rainbow. (a) True (b) False
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 window”? (a) we keep it the same (b) we measure it (c) we change it
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 change it (b) we measure it (c) we keep it the same
15. 15.⚖️ 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
16. 16.🌈 In VIBGYOR, what number colour is blue?
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 window (b) the amount of water (c) brightness of rainbow
18. 18.True or false: a magnet is 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? What do we do with “the time of day”? (a) we keep it the same (b) we measure it (c) we change it
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a clear glass of water (d) a mirror
22. 22.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
23. 23.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
24. 24.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) bright sunlight (d) a clear glass of water
26. 26.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
27. 27.🌈 In VIBGYOR, what number colour is orange?
28. 28.⚖️ 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
29. 29.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
30. 30.🛟 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 it gets hot (d) so the Sun moves
31. 31.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
32. 32.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
34. 34.🧺 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) a balloon
35. 35.True or false: yeast is not needed for the water rainbow. (a) False (b) True
36. 36.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
37. 37.⚖️ 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
38. 38.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) bright sunlight (d) a balloon

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