Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 236 · 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 time of day is the one thing we change. (a) True (b) False
2. 2.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
3. 3.True or false: a mirror is needed for the water rainbow. (a) True (b) False
4. 4.⚖️ 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
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
6. 6.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
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 same window (b) the same white paper (c) the amount of water (d) the same glass
8. 8.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
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? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
11. 11.🌈 In VIBGYOR, what number colour is green?
12. 12.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a balloon (d) bright sunlight
13. 13.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) a magnet (d) snow falling
14. 14.⚖️ 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 measure it (b) we keep it the same (c) we change it
15. 15.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.⚖️ 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) False (b) True
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) the glass is painted (d) water splits the light
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a magnet (c) a balloon (d) a clear glass of water
22. 22.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
24. 24.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
25. 25.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
26. 26.⚖️ 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
27. 27.🌈 In VIBGYOR, what number colour is red?
28. 28.⚖️ 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) False (b) True
29. 29.🌈 In VIBGYOR, what number colour is blue?
30. 30.⚖️ 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
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) yellow (d) red
32. 32.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a sheet of white paper (d) a magnet
33. 33.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
34. 34.🧺 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 battery cell (d) a sheet of white paper
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 window (b) the amount of water (c) the same white paper (d) brightness of rainbow
36. 36.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a magnet
38. 38.🧺 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) a sheet of white paper (d) turmeric powder
39. 39.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it floats away (c) the rainbow fades (d) it turns all red

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