Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 569 · 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? True or false: the same white paper is what we measure. (a) False (b) True
2. 2.⚖️ 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 window (b) the amount of water (c) brightness of rainbow
3. 3.🔮 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
4. 4.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) a sunny window (d) bright sunlight
8. 8.🌈 In VIBGYOR, what number colour is indigo?
9. 9.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
10. 10.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
11. 11.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.⚖️ 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
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
15. 15.⚖️ 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 window (c) the amount of water (d) the time of day
16. 16.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
18. 18.True or false: yeast is not needed for the water rainbow. (a) False (b) True
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
20. 20.🧺 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 magnet
21. 21.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) a clear glass of water
23. 23.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
24. 24.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) yeast (d) a sheet of white paper
25. 25.🌈 In VIBGYOR, what number colour is violet?
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a mirror (c) a clear glass of water (d) a sunny window
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) clouds (d) magnets
28. 28.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) in front of you (c) under the ground (d) straight above you
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.🧺 Do we need a balloon 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? Which of these is what we measure? (a) brightness of rainbow (b) the same white paper (c) the same window (d) the amount of water
32. 32.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
33. 33.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
34. 34.⚖️ 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
35. 35.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a battery cell
37. 37.⚖️ 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
38. 38.🧺 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 balloon
39. 39.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a clear glass of water (d) turmeric powder
40. 40.⚖️ 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 same white paper (c) brightness of rainbow

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