Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 845 · 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.🌈 How many colours do we name in a rainbow (VIBGYOR)?
2. 2.⚖️ 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) True (b) False
3. 3.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sheet of white paper
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so the Sun moves (c) so it gets hot (d) so it does not fall
6. 6.🔮 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
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) look at it in a mirror (c) stare at the Sun (d) never look at the Sun
8. 8.🌈 In VIBGYOR, what number colour is blue?
9. 9.⚖️ 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 keep it the same (b) we measure it (c) we change it
10. 10.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🌈 In VIBGYOR, what number colour is orange?
13. 13.⚖️ 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 keep it the same (c) we measure it
14. 14.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a mirror (d) a clear glass of water
15. 15.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) the water is coloured (d) water splits the light
16. 16.🔮 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
17. 17.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
18. 18.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
19. 19.⚖️ 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) True (b) False
20. 20.🌈 In VIBGYOR, what number colour is indigo?
21. 21.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a balloon (c) yeast (d) bright sunlight
22. 22.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
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) True (b) False
24. 24.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a magnet (d) a sheet of white paper
25. 25.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) reflection (c) evaporation (d) refraction
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a sunny window (d) a clear glass of water
30. 30.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
31. 31.True or false: bright sunlight is needed for the water rainbow. (a) True (b) False
32. 32.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) yeast (d) a battery cell
34. 34.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) orange (d) yellow
35. 35.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
36. 36.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) tiny drops of water (c) only yellow light (d) many colours mixed
37. 37.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a magnet (d) a clear glass of water
38. 38.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
39. 39.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) turmeric powder (d) a magnet
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) a magnet (d) a sheet of white paper

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