Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 384 · 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.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) bright sunlight (d) a sheet of white paper
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
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) look at it through glass (d) stare at the Sun
4. 4.True or false: yeast is needed for the water rainbow. (a) True (b) False
5. 5.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
6. 6.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
7. 7.🌈 In VIBGYOR, what number colour is red?
8. 8.🌈 In VIBGYOR, what number colour is violet?
9. 9.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) bright sunlight
10. 10.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a sheet of white paper (d) a balloon
11. 11.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a balloon (c) yeast (d) a clear glass of water
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 white paper”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) bright sunlight (d) yeast
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a balloon (d) bright sunlight
16. 16.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) yeast (c) a balloon (d) a sheet of white paper
17. 17.🌈 In VIBGYOR, what number colour is yellow?
18. 18.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it floats away (d) it turns brighter
19. 19.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
20. 20.⚖️ 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
21. 21.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
22. 22.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) magnetism (d) evaporation
23. 23.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a clear glass of water (d) a magnet
24. 24.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
25. 25.🌈 In VIBGYOR, what number colour is blue?
26. 26.True or false: a sheet of white paper 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 what we measure? (a) the amount of water (b) the same window (c) brightness of rainbow (d) the same glass
28. 28.⚖️ 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 window (b) the time of day (c) the same glass (d) the amount of water
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 keep it the same (c) we change it
30. 30.⚖️ 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) False (b) True
31. 31.⚖️ 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
32. 32.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
33. 33.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
34. 34.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a magnet (c) a balloon (d) a mirror
35. 35.🧺 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) turmeric powder (d) bright sunlight
36. 36.True or false: a battery cell is not needed for the water rainbow. (a) True (b) False
37. 37.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) yeast (d) a sunny window
39. 39.True or false: a sunny window is 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 time of day is kept the same. (a) True (b) False

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