Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 204 · 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 amount of water”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) it turns all red (c) the rainbow fades (d) it floats away
3. 3.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a sunny window (d) a mirror
4. 4.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
5. 5.⚖️ 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
6. 6.🌈 In VIBGYOR, what number colour is orange?
7. 7.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
10. 10.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
11. 11.⚖️ 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 measure it (c) we keep it the same
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) yeast (d) a sheet of white paper
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sunny window (c) a sheet of white paper (d) bright sunlight
14. 14.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
15. 15.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
16. 16.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it through glass (c) look at it in a mirror (d) stare at the Sun
17. 17.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
18. 18.🧺 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) bright sunlight
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
20. 20.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a mirror (d) a clear glass of water
22. 22.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.⚖️ 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 glass (c) the time of day (d) the same white paper
25. 25.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a magnet (d) a mirror
26. 26.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a battery cell (d) a sunny window
27. 27.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
28. 28.True or false: yeast is needed for the water rainbow. (a) True (b) False
29. 29.⚖️ 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
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same glass
32. 32.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
33. 33.🌈 In VIBGYOR, what number colour is violet?
34. 34.⚖️ 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
35. 35.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) refraction (d) magnetism
36. 36.⚖️ 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
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
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.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) red (d) blue
40. 40.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed

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