Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 969 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
2. 2.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
3. 3.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) only yellow light (c) tiny drops of water (d) many colours mixed
4. 4.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
5. 5.⚖️ 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 time of day (b) the same glass (c) the same window (d) the amount of water
6. 6.🌈 In VIBGYOR, what number colour is orange?
7. 7.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) red (c) yellow (d) orange
8. 8.⚖️ 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 glass
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 white paper”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
11. 11.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) violet (d) red
12. 12.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.⚖️ 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
15. 15.🔮 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
16. 16.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a balloon (d) a mirror
18. 18.⚖️ 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 time of day (c) brightness of rainbow
19. 19.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
20. 20.True or false: a balloon is needed for the water rainbow. (a) False (b) True
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
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.🌈 In VIBGYOR, what number colour is yellow?
24. 24.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
25. 25.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
26. 26.True or false: bright sunlight is not needed for the water rainbow. (a) False (b) True
27. 27.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a balloon (d) a sheet of white paper
28. 28.🌈 In VIBGYOR, what number colour is indigo?
29. 29.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) bright sunlight (c) a sheet of white paper (d) a sunny window
30. 30.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
31. 31.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
33. 33.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a clear glass of water (d) a sunny window
34. 34.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
35. 35.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
36. 36.⚖️ 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) brightness of rainbow (c) the same glass (d) the same window
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.🌈 In VIBGYOR, what number colour is blue?
39. 39.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a clear glass of water
40. 40.⚖️ 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

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