Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 543 · 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.🌈 In VIBGYOR, what number colour is yellow?
2. 2.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
3. 3.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
4. 4.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) behind you (d) straight above you
5. 5.🧺 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) a clear glass of water
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
7. 7.⚖️ 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
8. 8.☀️ 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
9. 9.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a clear glass of water (d) yeast
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
12. 12.🛟 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
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 white paper”? (a) we keep it the same (b) we measure it (c) we change it
14. 14.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
15. 15.🌈 In VIBGYOR, what number colour is red?
16. 16.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
17. 17.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) bright sunlight (c) a sunny window (d) a sheet of white paper
18. 18.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
19. 19.🌈 In VIBGYOR, what number colour is violet?
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) turmeric powder (c) a clear glass of water (d) a sunny window
22. 22.True or false: a clear glass of water is needed for the water rainbow. (a) True (b) False
23. 23.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sunny window
24. 24.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
25. 25.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) bright sunlight (d) a mirror
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
28. 28.🌈 In VIBGYOR, what number colour is green?
29. 29.⚖️ 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) True (b) False
30. 30.True or false: yeast is needed for the water rainbow. (a) True (b) False
31. 31.⚖️ 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
32. 32.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow
33. 33.⚖️ 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) brightness of rainbow (c) the time of day (d) the same white paper
34. 34.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
35. 35.🌈 In VIBGYOR, what number colour is blue?
36. 36.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a battery cell (d) a sunny window
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) it floats away (d) the rainbow fades
38. 38.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
39. 39.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a clear glass of water
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is kept the same. (a) False (b) True

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