Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 665 · 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 not needed for the water rainbow? (a) a clear glass of water (b) a sunny window (c) turmeric powder (d) a sheet of white paper
2. 2.🌈 How many colours do we name in a rainbow (VIBGYOR)?
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a magnet (c) a small rainbow (d) a shadow of ice
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sunny window (c) a sheet of white paper (d) a balloon
5. 5.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) never look at the Sun (c) look at it through glass (d) stare at the Sun
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 glass”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ 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 same glass (b) the same white paper (c) the same window (d) brightness of rainbow
8. 8.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
9. 9.⚖️ 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 white paper (b) the same glass (c) the same window (d) the amount of water
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it turns blue (d) so it gets hot
11. 11.⚖️ 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) brightness of rainbow (c) the same window
12. 12.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a battery cell (d) bright sunlight
13. 13.⚖️ 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
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) bright sunlight (c) a sunny window (d) a clear glass of water
15. 15.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
16. 16.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the amount of water is what we measure. (a) False (b) True
17. 17.True or false: a mirror is needed for the water rainbow. (a) False (b) True
18. 18.⚖️ 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
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) green (b) blue (c) red (d) violet
20. 20.🌈 In VIBGYOR, what number colour is red?
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 kept the same. (a) True (b) False
22. 22.🧺 Do we need yeast for the water rainbow? (a) not needed (b) needed
23. 23.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) balloons (c) magnets (d) clouds
24. 24.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
25. 25.⚖️ 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 measure it (c) we change it
26. 26.True or false: a magnet is not needed for the water rainbow. (a) True (b) False
27. 27.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns all red (d) it turns brighter
28. 28.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
29. 29.🌈 In VIBGYOR, what number colour is violet?
30. 30.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
31. 31.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
32. 32.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny drops of water (c) many colours mixed (d) tiny bits of dust
33. 33.🌦️ To see a rainbow in the sky, where must the Sun be? (a) behind you (b) in front of you (c) straight above you (d) under the ground
34. 34.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a balloon (d) a clear glass of water
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a sunny window (d) a magnet
37. 37.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) water splits the light (c) the water is coloured (d) the paper makes colours
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False

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