Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 64 · 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.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) a mirror (d) turmeric powder
3. 3.🧺 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) turmeric powder (d) a sunny window
4. 4.🌈 In VIBGYOR, what number colour is red?
5. 5.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) yeast (c) a sheet of white paper (d) turmeric powder
6. 6.True or false: a balloon is needed for the water rainbow. (a) True (b) False
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it turns all red (d) it floats away
8. 8.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
9. 9.True or false: a mirror is needed for the water rainbow. (a) True (b) False
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a sunny window
11. 11.⚖️ 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) brightness of rainbow (b) the same glass (c) the same white paper (d) the amount of water
12. 12.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it turns blue (d) so it gets hot
13. 13.⚖️ 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
14. 14.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
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 the one thing we change. (a) True (b) False
16. 16.True or false: yeast is needed for the water rainbow. (a) True (b) False
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.⚖️ 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) False (b) True
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) turmeric powder
20. 20.⚖️ 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 measure it (c) we change it
21. 21.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “brightness of rainbow”? (a) we keep it the same (b) we measure it (c) we change it
22. 22.⚖️ 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) True (b) False
23. 23.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a balloon (d) a clear glass of water
25. 25.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
26. 26.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
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) the amount of water (b) brightness of rainbow (c) the same window
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.⚖️ 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 white paper (b) the time of day (c) brightness of rainbow (d) the amount of water
30. 30.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
31. 31.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a battery cell (d) a clear glass of water
32. 32.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the glass is painted (c) the paper makes colours (d) water splits the light
34. 34.True or false: yeast is not needed for the water rainbow. (a) True (b) False
35. 35.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) stare at the Sun (c) look at it in a mirror (d) never look at the Sun
36. 36.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) tiny drops of water (d) only yellow light
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a magnet (d) bright sunlight
39. 39.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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