Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 667 · 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 “the same window”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) clouds (c) balloons (d) prisms
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) snow falling (d) a small rainbow
4. 4.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so the Sun moves (d) so it does not fall
6. 6.🛟 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
7. 7.True or false: yeast is not needed for the water rainbow. (a) False (b) True
8. 8.True or false: a balloon is needed for the water rainbow. (a) False (b) True
9. 9.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) yellow (c) violet (d) red
10. 10.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
11. 11.🌈 In VIBGYOR, what number colour is indigo?
12. 12.⚖️ 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 time of day (b) the amount of water (c) the same window (d) brightness of rainbow
13. 13.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is kept the same. (a) True (b) False
14. 14.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
15. 15.🌈 In VIBGYOR, what number colour is blue?
16. 16.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) a magnet (d) bright sunlight
17. 17.🌈 In VIBGYOR, what number colour is orange?
18. 18.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) yeast (d) a sunny window
19. 19.🌈 In VIBGYOR, what number colour is red?
20. 20.🌈 How many colours do we name in a rainbow (VIBGYOR)?
21. 21.⚖️ 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
22. 22.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) the glass is painted (d) water splits the light
23. 23.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a battery cell (d) a mirror
24. 24.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) yeast (d) bright sunlight
25. 25.⚖️ 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
26. 26.⚖️ 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
27. 27.📘 What do we call light bending as it passes from air into water? (a) reflection (b) magnetism (c) evaporation (d) refraction
28. 28.☀️ 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
29. 29.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns brighter (c) the rainbow fades (d) it turns all red
30. 30.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) yeast (c) a balloon (d) a sunny window
31. 31.⚖️ 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 change it (c) we keep it the same
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 keep it the same (b) we change it (c) we measure it
33. 33.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) yeast (c) a clear glass of water (d) bright sunlight
35. 35.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.⚖️ 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 amount of water (d) the same white paper
38. 38.⚖️ 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 same white paper (b) the amount of water (c) brightness of rainbow
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 what we measure. (a) True (b) False
40. 40.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you

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