Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 768 · 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? What do we do with “the time of day”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a sunny window (d) a magnet
4. 4.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) bright sunlight (c) a balloon (d) a clear glass of water
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.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.⚖️ 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 glass (b) brightness of rainbow (c) the time of day (d) the amount of water
9. 9.⚖️ 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
10. 10.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) refraction (d) reflection
11. 11.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) yeast (d) turmeric powder
12. 12.🌈 In VIBGYOR, what number colour is yellow?
13. 13.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) balloons (d) magnets
14. 14.⚖️ 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 white paper (b) the time of day (c) the amount of water (d) the same glass
15. 15.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sheet of white paper (c) a clear glass of water (d) a magnet
17. 17.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
18. 18.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
19. 19.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a battery cell (d) bright sunlight
20. 20.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a small rainbow (c) snow falling (d) a shadow of ice
21. 21.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
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 kept the same. (a) True (b) False
23. 23.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
24. 24.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it turns brighter (c) the rainbow fades (d) it floats away
25. 25.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the paper makes colours (c) the water is coloured (d) the glass is painted
26. 26.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
27. 27.⚖️ 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) the same glass (c) brightness of rainbow
28. 28.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
29. 29.True or false: yeast is needed for the water rainbow. (a) False (b) True
30. 30.⚖️ 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 same white paper (c) the amount of water
31. 31.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
33. 33.⚖️ 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) False (b) True
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) a mirror
35. 35.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) a clear glass of water (d) a balloon
37. 37.🌈 In VIBGYOR, what number colour is violet?
38. 38.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
39. 39.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False

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