Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 611 · 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.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
2. 2.🌈 In VIBGYOR, what number colour is violet?
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a balloon (d) a clear glass of water
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) False (b) True
5. 5.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sheet of white paper (d) a clear glass of water
6. 6.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) red (c) green (d) violet
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) yeast (d) a sheet of white paper
8. 8.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a mirror (c) a magnet (d) a clear glass of water
10. 10.⚖️ 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 glass (b) the amount of water (c) the same window (d) the same white paper
11. 11.🌈 How many colours do we name in a rainbow (VIBGYOR)?
12. 12.⚖️ 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 change it (b) we keep it the same (c) we measure it
13. 13.True or false: a balloon is needed for the water rainbow. (a) True (b) False
14. 14.🌦️ 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
15. 15.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) refraction (d) magnetism
16. 16.⚖️ 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 keep it the same (b) we change it (c) we measure it
17. 17.⚖️ 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 amount of water (c) the time of day (d) the same white paper
18. 18.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) water splits the light (c) the glass is painted (d) the water is coloured
19. 19.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
20. 20.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) bright sunlight
21. 21.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a sunny window (d) yeast
22. 22.🌈 In VIBGYOR, what number colour is green?
23. 23.🛟 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
24. 24.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
25. 25.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) balloons (d) clouds
26. 26.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a shadow of ice (d) a small rainbow
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) look at it through glass (d) stare at the Sun
28. 28.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) violet (c) orange (d) red
29. 29.⚖️ 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 change it (c) we keep it the same
30. 30.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
31. 31.🌈 In VIBGYOR, what number colour is red?
32. 32.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
33. 33.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
34. 34.True or false: a mirror is needed for the water rainbow. (a) True (b) False
35. 35.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
36. 36.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a magnet

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