Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 154 · 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 not needed for the water rainbow? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) a clear glass of water
2. 2.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
3. 3.🌈 In VIBGYOR, what number colour is violet?
4. 4.⚖️ 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
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sunny window
6. 6.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
7. 7.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
8. 8.⚖️ 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
9. 9.🛟 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
10. 10.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
11. 11.⚖️ 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 change it (c) we keep it the same
12. 12.⚖️ 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 time of day (c) brightness of rainbow
13. 13.🌈 In VIBGYOR, what number colour is red?
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
16. 16.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) turmeric powder
17. 17.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
18. 18.🧺 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) yeast (d) bright sunlight
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
20. 20.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
21. 21.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a balloon
22. 22.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) bright sunlight
24. 24.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
25. 25.🌈 How many colours do we name in a rainbow (VIBGYOR)?
26. 26.⚖️ 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 white paper (b) brightness of rainbow (c) the amount of water (d) the same window
27. 27.True or false: a balloon is not needed for the water rainbow. (a) False (b) True
28. 28.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) straight above you (d) in front of you
29. 29.🧺 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) a magnet (d) a sunny window
30. 30.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
31. 31.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
32. 32.🧺 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 sunny window (d) turmeric powder
33. 33.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a magnet (c) a balloon (d) a sunny window
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.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
37. 37.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
38. 38.True or false: a magnet is needed for the water rainbow. (a) True (b) False
39. 39.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
40. 40.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter

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