Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 977 · 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.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
2. 2.⚖️ 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 measure it (b) we change it (c) we keep it the same
3. 3.⚖️ 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 change it (c) we measure it
4. 4.⚖️ 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) False (b) True
5. 5.⚖️ 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
6. 6.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) magnets (c) clouds (d) balloons
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
9. 9.True or false: a balloon is needed for the water rainbow. (a) True (b) False
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
11. 11.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.⚖️ 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) False (b) True
15. 15.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) yeast (d) a magnet
16. 16.🌈 In VIBGYOR, what number colour is orange?
17. 17.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
18. 18.🧺 Which of these is needed for the water rainbow? (a) bright sunlight (b) a magnet (c) a mirror (d) yeast
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a small rainbow (d) a shadow of ice
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) a sheet of white paper (d) bright sunlight
21. 21.True or false: a magnet is needed for the water rainbow. (a) False (b) True
22. 22.🌈 In VIBGYOR, what number colour is red?
23. 23.⚖️ 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
24. 24.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
25. 25.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) yeast (d) a sheet of white paper
26. 26.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
27. 27.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a clear glass of water (d) bright sunlight
28. 28.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) turmeric powder (b) a clear glass of water (c) bright sunlight (d) a sunny window
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
31. 31.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) violet (c) blue (d) red
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
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 same white paper (b) brightness of rainbow (c) the amount of water (d) the same window
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a battery cell (d) a clear glass of water
35. 35.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
36. 36.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a clear glass of water
37. 37.⚖️ 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 amount of water (c) the same glass
38. 38.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
39. 39.⚖️ 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 time of day (b) the amount of water (c) brightness of rainbow
40. 40.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed

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