Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 602 · 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? Which of these is what we measure? (a) the amount of water (b) the same white paper (c) the same glass (d) brightness of rainbow
2. 2.🌈 In VIBGYOR, what number colour is blue?
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sunny window (c) bright sunlight (d) a clear glass of water
4. 4.🌈 In VIBGYOR, what number colour is green?
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.⚖️ 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) False (b) True
7. 7.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sheet of white paper (c) yeast (d) a battery cell
8. 8.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
9. 9.🌈 In VIBGYOR, what number colour is yellow?
10. 10.True or false: yeast is needed for the water rainbow. (a) True (b) False
11. 11.🛟 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
12. 12.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
13. 13.⚖️ 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) True (b) False
14. 14.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it turns all red (d) it floats away
15. 15.⚖️ 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
16. 16.🧺 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) turmeric powder
17. 17.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
18. 18.☀️ 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
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
20. 20.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a sunny window (d) a mirror
21. 21.📘 What do we call light bending as it passes from air into water? (a) refraction (b) magnetism (c) evaporation (d) reflection
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a balloon (d) a sheet of white paper
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.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
25. 25.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
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 same glass (c) the time of day (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 window”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a magnet (d) bright sunlight
31. 31.🧺 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 sheet of white paper (d) turmeric powder
32. 32.⚖️ 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 change it (c) we keep it the same
33. 33.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
34. 34.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) behind you (c) in front of you (d) straight above you
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) magnets (d) balloons
36. 36.🌈 In VIBGYOR, what number colour is indigo?
37. 37.True or false: a mirror is needed for the water rainbow. (a) False (b) True
38. 38.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a magnet (d) a shadow of ice
39. 39.⚖️ 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
40. 40.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a mirror

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