Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 48 · 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.🛟 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
2. 2.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) never look at the Sun (d) stare at the Sun
3. 3.⚖️ 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
4. 4.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a magnet (d) a shadow of ice
5. 5.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
8. 8.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a sunny window
11. 11.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
12. 12.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the glass is painted (d) the water is coloured
13. 13.🌈 In VIBGYOR, what number colour is orange?
14. 14.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
15. 15.⚖️ 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 same white paper (d) the same window
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a sheet of white paper (d) a sunny window
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 amount of water (b) the same white paper (c) brightness of rainbow
18. 18.🌈 In VIBGYOR, what number colour is yellow?
19. 19.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) a clear glass of water (d) bright sunlight
21. 21.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
23. 23.⚖️ 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 keep it the same (b) we change it (c) we measure it
24. 24.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is kept the same. (a) True (b) False
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
26. 26.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
27. 27.⚖️ 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
28. 28.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
29. 29.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a battery cell (c) a sunny window (d) turmeric powder
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sheet of white paper
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
32. 32.🧺 Do we need a clear glass of water 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 glass is the one thing we change. (a) True (b) False
34. 34.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
35. 35.🌈 In VIBGYOR, what number colour is green?
36. 36.⚖️ 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 same window (c) the amount of water
37. 37.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
38. 38.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) bright sunlight (d) a clear glass of water

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