Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 235 · 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.⚖️ 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
2. 2.🛟 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
3. 3.🌈 How many colours do we name in a rainbow (VIBGYOR)?
4. 4.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a mirror (c) a sunny window (d) a clear glass of water
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
8. 8.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) red (c) blue (d) violet
9. 9.🌈 In VIBGYOR, what number colour is indigo?
10. 10.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
11. 11.⚖️ 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) True (b) False
12. 12.True or false: a magnet is needed for the water rainbow. (a) False (b) True
13. 13.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
14. 14.🌈 In VIBGYOR, what number colour is green?
15. 15.⚖️ 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) True (b) False
16. 16.🧺 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
17. 17.🛟 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
18. 18.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) evaporation (d) magnetism
19. 19.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
20. 20.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a magnet (d) a balloon
21. 21.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sheet of white paper
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.⚖️ 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) True (b) False
25. 25.🌈 In VIBGYOR, what number colour is orange?
26. 26.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) yeast (c) a clear glass of water (d) a sheet of white paper
27. 27.🌈 In VIBGYOR, what number colour is violet?
28. 28.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
29. 29.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
30. 30.⚖️ 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 change it (b) we measure it (c) we keep it the same
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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) brightness of rainbow (c) the same window
35. 35.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
36. 36.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) turmeric powder (c) a balloon (d) a battery cell
37. 37.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) yeast (c) a sheet of white paper (d) a sunny window
38. 38.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
39. 39.True or false: a balloon is needed for the water rainbow. (a) False (b) True
40. 40.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids