Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 444 · 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.☀️ 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
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) a sunny window (d) a sheet of white paper
3. 3.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
4. 4.🌈 How many colours do we name in a rainbow (VIBGYOR)?
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a sunny window (d) a mirror
6. 6.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) a magnet (d) bright sunlight
8. 8.True or false: a balloon is needed for the water rainbow. (a) False (b) True
9. 9.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) turmeric powder (d) a clear glass of water
10. 10.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) red (c) violet (d) yellow
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) green (c) blue (d) violet
12. 12.⚖️ 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 keep it the same (b) we change it (c) we measure it
13. 13.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
14. 14.🌈 In VIBGYOR, what number colour is violet?
15. 15.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
16. 16.⚖️ 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 amount of water (d) the time of day
17. 17.⚖️ 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) True (b) False
18. 18.True or false: a battery cell 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 the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
20. 20.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) yeast (c) bright sunlight (d) turmeric powder
21. 21.True or false: a mirror is needed for the water rainbow. (a) False (b) True
22. 22.⚖️ 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) the same glass (c) the amount of water (d) brightness of rainbow
23. 23.⚖️ 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) False (b) True
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a small rainbow (d) a magnet
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
26. 26.⚖️ 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) False (b) True
27. 27.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
28. 28.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a sunny window (c) turmeric powder (d) a balloon
29. 29.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
30. 30.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
31. 31.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) behind you (c) under the ground (d) in front of you
32. 32.⚖️ 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 time of day (c) brightness of rainbow
33. 33.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
34. 34.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
35. 35.🌈 In VIBGYOR, what number colour is yellow?
36. 36.⚖️ 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) False (b) True
37. 37.🌈 In VIBGYOR, what number colour is orange?
38. 38.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) False (b) True
40. 40.🌈 In VIBGYOR, what number colour is indigo?

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