Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 707 · 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 “brightness of rainbow”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) it turns all red (d) the rainbow fades
3. 3.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) stare at the Sun (d) look at it through glass
4. 4.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) reflection (c) magnetism (d) refraction
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a sheet of white paper (c) bright sunlight (d) a sunny window
6. 6.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) many colours mixed (d) tiny drops of water
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a clear glass of water (c) bright sunlight (d) a sunny window
8. 8.⚖️ 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
9. 9.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it gets hot (c) so the Sun moves (d) so it turns blue
10. 10.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a mirror (d) bright sunlight
11. 11.🌈 In VIBGYOR, what number colour is red?
12. 12.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a magnet
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) bright sunlight (c) a balloon (d) a sheet of white paper
15. 15.True or false: a magnet is needed for the water rainbow. (a) False (b) True
16. 16.⚖️ 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) brightness of rainbow (c) the same window (d) the amount of water
17. 17.🌈 In VIBGYOR, what number colour is yellow?
18. 18.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) straight above you (c) under the ground (d) behind you
19. 19.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) bright sunlight (d) a clear glass of water
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a mirror (d) a sheet of white paper
22. 22.🧺 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 sunny window (d) yeast
23. 23.⚖️ 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
24. 24.⚖️ 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) the amount of water (c) brightness of rainbow (d) the same glass
25. 25.🌈 In VIBGYOR, what number colour is blue?
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
28. 28.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
29. 29.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
30. 30.True or false: a magnet is not needed for the water rainbow. (a) False (b) True
31. 31.True or false: a mirror is not needed for the water rainbow. (a) False (b) True
32. 32.⚖️ 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 white paper
33. 33.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
34. 34.True or false: yeast is needed for the water rainbow. (a) False (b) True
35. 35.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
36. 36.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
37. 37.🌈 In VIBGYOR, what number colour is indigo?
38. 38.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
39. 39.True or false: yeast is not needed for the water rainbow. (a) False (b) True
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False

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