Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 493 · 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 needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a balloon (d) turmeric powder
2. 2.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
3. 3.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is the one thing we change. (a) True (b) False
4. 4.🔮 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
5. 5.⚖️ 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
6. 6.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) look at it through glass (d) never look at the Sun
7. 7.⚖️ 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
8. 8.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it does not fall (c) so the Sun moves (d) so it turns blue
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
10. 10.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
11. 11.🌦️ 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
12. 12.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
13. 13.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
14. 14.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🌈 In VIBGYOR, what number colour is yellow?
17. 17.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) True (b) False
18. 18.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) red (d) green
19. 19.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
20. 20.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
21. 21.🧺 Which of these is needed for the water rainbow? (a) yeast (b) turmeric powder (c) a magnet (d) a sunny window
22. 22.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) bright sunlight (d) a battery cell
23. 23.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
24. 24.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🧺 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
27. 27.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
28. 28.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds
29. 29.⚖️ 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 amount of water (c) the same window (d) the same glass
30. 30.🌈 In VIBGYOR, what number colour is green?
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
32. 32.🌈 In VIBGYOR, what number colour is blue?
33. 33.True or false: a mirror is needed for the water rainbow. (a) False (b) True
34. 34.🌈 In VIBGYOR, what number colour is violet?
35. 35.⚖️ 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 window (d) the time of day
36. 36.🧺 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 sunny window
37. 37.True or false: yeast is not needed for the water rainbow. (a) False (b) True
38. 38.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) only yellow light (d) many colours mixed
39. 39.🌈 In VIBGYOR, what number colour is indigo?
40. 40.⚖️ 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

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