Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 535 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it turns blue (d) so it gets hot
3. 3.🌈 In VIBGYOR, what number colour is indigo?
4. 4.🧺 Do we need bright sunlight 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? Which of these is kept the same? (a) the same window (b) the amount of water (c) brightness of rainbow
6. 6.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
7. 7.⚖️ 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 measure it (b) we keep it the same (c) we change it
8. 8.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
9. 9.True or false: a mirror is needed for the water rainbow. (a) True (b) False
10. 10.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sunny window (d) a clear glass of water
11. 11.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) tiny bits of dust (d) only yellow light
12. 12.🌈 How many colours do we name in a rainbow (VIBGYOR)?
13. 13.🌈 In VIBGYOR, what number colour is violet?
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
15. 15.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a sunny window (c) a balloon (d) a mirror
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) False (b) True
17. 17.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
18. 18.⚖️ 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 amount of water (b) brightness of rainbow (c) the same glass (d) the same window
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) False (b) True
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.⚖️ 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 amount of water (b) the same white paper (c) brightness of rainbow (d) the same glass
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
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) False (b) True
24. 24.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
25. 25.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) bright sunlight
26. 26.⚖️ 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
27. 27.🌈 In VIBGYOR, what number colour is yellow?
28. 28.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sunny window
30. 30.🌈 In VIBGYOR, what number colour is green?
31. 31.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
32. 32.True or false: yeast is needed for the water rainbow. (a) True (b) False
33. 33.True or false: a balloon is needed for the water rainbow. (a) True (b) False
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 the one thing we change. (a) False (b) True
35. 35.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a battery cell (c) a sunny window (d) bright sunlight
36. 36.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
37. 37.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) magnets (d) clouds
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) True (b) False
39. 39.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) refraction (d) magnetism
40. 40.🌈 In VIBGYOR, what number colour is orange?

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