Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 130 · 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.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
2. 2.🌈 In VIBGYOR, what number colour is yellow?
3. 3.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
4. 4.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
6. 6.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
7. 7.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
8. 8.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) a clear glass of water
10. 10.⚖️ 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
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.True or false: yeast is needed for the water rainbow. (a) True (b) False
13. 13.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) stare at the Sun (c) look at it through glass (d) look at it in a mirror
14. 14.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) red (c) green (d) blue
16. 16.⚖️ 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 measure it (c) we keep it the same
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) prisms (d) balloons
18. 18.🔮 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
19. 19.⚖️ 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) the amount of water (c) brightness of rainbow (d) the time of day
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sunny window
21. 21.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
22. 22.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) bright sunlight (d) turmeric powder
23. 23.⚖️ 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
24. 24.⚖️ 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 time of day (b) brightness of rainbow (c) the amount of water
25. 25.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
26. 26.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) yeast (d) a balloon
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 amount of water”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
30. 30.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) orange (c) yellow (d) violet
31. 31.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a battery cell (d) yeast
32. 32.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
35. 35.⚖️ 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
36. 36.⚖️ 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) False (b) True
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🌈 In VIBGYOR, what number colour is violet?
39. 39.⚖️ 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 change it (b) we keep it the same (c) we measure it
40. 40.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False

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