Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 685 · 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) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) a sunny window (d) bright sunlight
3. 3.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a battery cell (d) a sheet of white paper
4. 4.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
7. 7.🛟 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 it turns blue (d) so the Sun moves
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a battery cell
9. 9.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a balloon (d) a sunny window
10. 10.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
11. 11.⚖️ 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) False (b) True
12. 12.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
13. 13.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
14. 14.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
15. 15.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
16. 16.⚖️ 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 keep it the same (c) we measure it
17. 17.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) reflection (d) evaporation
18. 18.🌈 In VIBGYOR, what number colour is blue?
19. 19.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
20. 20.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
21. 21.🌦️ 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
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) yeast (c) bright sunlight (d) a sheet of white paper
23. 23.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
24. 24.🌈 In VIBGYOR, what number colour is indigo?
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 the one thing we change. (a) True (b) False
26. 26.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
27. 27.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the water is coloured (c) the glass is painted (d) the paper makes colours
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) yeast
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sunny window (c) bright sunlight (d) a clear glass of water
30. 30.⚖️ 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
31. 31.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) orange (c) red (d) violet
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
34. 34.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
35. 35.⚖️ 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) False (b) True
36. 36.🌈 In VIBGYOR, what number colour is orange?
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 time of day (d) brightness of rainbow
38. 38.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
40. 40.🌈 In VIBGYOR, what number colour is red?

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