Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 298 · 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? Which of these is what we measure? (a) the same white paper (b) the time of day (c) the same glass (d) brightness of rainbow
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so it turns blue (d) so the Sun moves
3. 3.⚖️ 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 change it (c) we keep it the same
4. 4.🌈 In VIBGYOR, what number colour is yellow?
5. 5.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
6. 6.🌈 In VIBGYOR, what number colour is blue?
7. 7.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) bright sunlight (d) turmeric powder
10. 10.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
11. 11.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) bright sunlight
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
13. 13.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
14. 14.⚖️ 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 change it (c) we measure it
15. 15.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) straight above you (c) under the ground (d) in front of you
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
17. 17.⚖️ 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 same glass (c) the time of day (d) the amount of water
18. 18.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.🧺 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 clear glass of water (d) a balloon
21. 21.🧺 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 sheet of white paper (d) a battery cell
22. 22.⚖️ 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 same white paper (b) the amount of water (c) brightness of rainbow
23. 23.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) it floats away (d) the rainbow fades
24. 24.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
25. 25.⚖️ 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 keep it the same (b) we measure it (c) we change it
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) True (b) False
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
29. 29.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
30. 30.🧺 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) yeast
31. 31.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
32. 32.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
33. 33.⚖️ 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) False (b) True
34. 34.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
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 what we measure. (a) True (b) False
37. 37.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
38. 38.⚖️ 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) False (b) True
39. 39.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a shadow of ice (c) a magnet (d) snow falling
40. 40.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a sunny window (d) a clear glass of water

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