Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 726 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same white paper
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🌈 In VIBGYOR, what number colour is yellow?
5. 5.⚖️ 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
6. 6.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
7. 7.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a clear glass of water (d) a sheet of white paper
10. 10.🌈 In VIBGYOR, what number colour is violet?
11. 11.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a balloon (c) a clear glass of water (d) a mirror
12. 12.⚖️ 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) False (b) True
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sunny window
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) bright sunlight (d) a sheet of white paper
15. 15.⚖️ 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
16. 16.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) under the ground (d) in front of you
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
18. 18.🌈 In VIBGYOR, what number colour is indigo?
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) False (b) True
20. 20.🌈 In VIBGYOR, what number colour is red?
21. 21.⚖️ 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) False (b) True
22. 22.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
23. 23.True or false: a balloon is needed for the water rainbow. (a) False (b) True
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
25. 25.🌈 In VIBGYOR, what number colour is green?
26. 26.🛟 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
27. 27.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
28. 28.🧺 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 sunny window (d) turmeric powder
29. 29.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a mirror (d) a sheet of white paper
31. 31.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
32. 32.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
33. 33.🌈 In VIBGYOR, what number colour is blue?
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
35. 35.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) a sunny window
36. 36.⚖️ 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
37. 37.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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 change it (b) we measure it (c) we keep it the same
39. 39.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
40. 40.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) tiny bits of dust (d) only yellow light

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