Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 446 · 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.True or false: turmeric powder is needed for the water rainbow. (a) True (b) False
2. 2.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
3. 3.True or false: yeast is needed for the water rainbow. (a) True (b) False
4. 4.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a mirror (d) a clear glass of water
5. 5.⚖️ 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
6. 6.⚖️ 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 change it (b) we measure it (c) we keep it the same
7. 7.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
8. 8.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the paper makes colours (d) the water is coloured
9. 9.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed
10. 10.True or false: a magnet is needed for the water rainbow. (a) False (b) True
11. 11.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
12. 12.🧺 Which of these is not needed for the water rainbow? (a) a magnet (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
13. 13.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
14. 14.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) stare at the Sun (d) never look at the Sun
15. 15.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
16. 16.🌈 In VIBGYOR, what number colour is yellow?
17. 17.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a battery cell (c) yeast (d) a sunny window
18. 18.🛟 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
19. 19.🌈 In VIBGYOR, what number colour is indigo?
20. 20.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is kept the same. (a) True (b) False
21. 21.True or false: a sunny window is needed for the water rainbow. (a) True (b) False
22. 22.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) it floats away (c) it turns brighter (d) the rainbow fades
23. 23.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) turmeric powder (c) a sunny window (d) a sheet of white paper
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In VIBGYOR, what number colour is orange?
27. 27.⚖️ 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
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 glass (b) brightness of rainbow (c) the amount of water (d) the same window
29. 29.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
30. 30.⚖️ 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
31. 31.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
32. 32.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a small rainbow (c) a shadow of ice (d) a magnet
33. 33.True or false: a mirror is needed for the water rainbow. (a) False (b) True
34. 34.☀️ What is white sunlight really made of? (a) tiny drops of water (b) many colours mixed (c) tiny bits of dust (d) only yellow light
35. 35.⚖️ 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
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) turmeric powder (c) bright sunlight (d) a sheet of white paper
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
40. 40.🌈 In VIBGYOR, what number colour is red?

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