Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 306 · 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? What do we do with “the same window”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ 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 change it (b) we keep it the same (c) we measure it
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🧺 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) a battery cell
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
7. 7.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a magnet (d) a small rainbow
8. 8.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a clear glass of water (d) a mirror
9. 9.⚖️ 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
10. 10.🔮 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
11. 11.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
13. 13.⚖️ 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 time of day
14. 14.🧺 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) bright sunlight (d) a balloon
15. 15.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a magnet (d) a battery cell
16. 16.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) prisms (d) magnets
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
20. 20.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) bright sunlight (d) turmeric powder
21. 21.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
22. 22.🌈 In VIBGYOR, what number colour is green?
23. 23.True or false: a balloon is needed for the water rainbow. (a) False (b) True
24. 24.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a battery cell
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
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? What do we do with “the same white paper”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sunny window (c) bright sunlight (d) a sheet of white paper
30. 30.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
31. 31.⚖️ 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
32. 32.🌈 In VIBGYOR, what number colour is blue?
33. 33.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
34. 34.🌈 In VIBGYOR, what number colour is orange?
35. 35.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
36. 36.🌈 In VIBGYOR, what number colour is violet?
37. 37.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a balloon (c) a clear glass of water (d) a sheet of white paper
40. 40.⚖️ 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 glass (c) the same white paper (d) the amount of water

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