Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 153 · 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 the Sun moves (b) so it turns blue (c) so it gets hot (d) so it does not fall
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 blue?
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a battery cell (d) a sheet of white paper
5. 5.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
6. 6.🌈 In VIBGYOR, what number colour is orange?
7. 7.⚖️ 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 white paper
8. 8.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
9. 9.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) bright sunlight (d) a magnet
10. 10.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a sunny window (d) a balloon
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) the amount of water (b) the same white paper (c) the same glass (d) the time of day
12. 12.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
13. 13.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
15. 15.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a sunny window (d) bright sunlight
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
18. 18.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
19. 19.⚖️ 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 measure it (b) we change it (c) we keep it the same
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.⚖️ 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) False (b) True
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 the one thing we change. (a) True (b) False
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a magnet (d) a clear glass of water
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 clear glass of water (d) turmeric powder
25. 25.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
26. 26.⚖️ 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
27. 27.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it in a mirror (d) look at it through glass
28. 28.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) turmeric powder (c) a clear glass of water (d) a battery cell
29. 29.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) yeast (d) a sunny window
32. 32.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) violet (d) blue
33. 33.⚖️ 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 change it (b) we measure it (c) we keep it the same
34. 34.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) yeast (d) a sheet of white paper
35. 35.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
36. 36.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a sheet of white paper (c) turmeric powder (d) bright sunlight
38. 38.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
39. 39.🔮 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
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) yellow (d) red

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