Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 941 · 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 of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) turmeric powder (d) bright sunlight
2. 2.🔮 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
3. 3.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a battery cell (c) a balloon (d) a sheet of white paper
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🌈 In VIBGYOR, what number colour is violet?
6. 6.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
7. 7.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) behind you (c) straight above you (d) under the ground
11. 11.🧺 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
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a clear glass of water
13. 13.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a magnet (d) a sunny window
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.⚖️ 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
16. 16.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) a sheet of white paper
18. 18.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
19. 19.⚖️ 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
20. 20.True or false: yeast is not needed for the water rainbow. (a) False (b) True
21. 21.🛟 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
22. 22.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) a sheet of white paper (d) a sunny window
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.🌈 In VIBGYOR, what number colour is indigo?
26. 26.🔮 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
27. 27.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
28. 28.True or false: yeast is needed for the water rainbow. (a) False (b) True
29. 29.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) tiny drops of water (d) only yellow light
30. 30.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) yeast (d) bright sunlight
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) blue (d) green
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) a sunny window (d) a clear glass of water
33. 33.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
34. 34.🌈 In VIBGYOR, what number colour is red?
35. 35.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
36. 36.⚖️ 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 amount of water (d) the time of day
37. 37.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
38. 38.⚖️ 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 same window (c) brightness of rainbow (d) the time of day
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
40. 40.⚖️ 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

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