Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 152 · 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.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) magnets (c) balloons (d) prisms
2. 2.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
3. 3.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a clear glass of water (d) turmeric powder
4. 4.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
5. 5.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
6. 6.⚖️ 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
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 change it (b) we measure it (c) we keep it the same
8. 8.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the time of day (c) the amount of water
11. 11.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
12. 12.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
13. 13.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
14. 14.⚖️ 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 time of day (b) the amount of water (c) the same glass (d) brightness of rainbow
15. 15.☀️ 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
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
17. 17.⚖️ 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
18. 18.🌈 In VIBGYOR, what number colour is yellow?
19. 19.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so it turns blue (d) so the Sun moves
20. 20.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) turmeric powder
23. 23.🌈 In VIBGYOR, what number colour is red?
24. 24.⚖️ 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 measure it (b) we keep it the same (c) we change it
25. 25.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
26. 26.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
27. 27.🛟 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
28. 28.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a mirror (d) a magnet
29. 29.🌈 In VIBGYOR, what number colour is orange?
30. 30.⚖️ 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
31. 31.🌈 In VIBGYOR, what number colour is indigo?
32. 32.🧺 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 mirror (d) bright sunlight
33. 33.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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 change it (c) we keep it the same
35. 35.⚖️ 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 time of day (c) the same glass (d) the amount of water
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a clear glass of water (c) a sunny window (d) bright sunlight
37. 37.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a magnet (d) yeast
38. 38.True or false: yeast is needed for the water rainbow. (a) True (b) False
39. 39.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
40. 40.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue

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