Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 487 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a mirror (b) a sheet of white paper (c) a sunny window (d) bright sunlight
2. 2.True or false: yeast is not needed for the water rainbow. (a) True (b) False
3. 3.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
4. 4.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) red (b) violet (c) yellow (d) orange
5. 5.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) bright sunlight (d) a sheet of white paper
7. 7.⚖️ 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 keep it the same (c) we change it
8. 8.⚖️ 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
9. 9.🌈 How many colours do we name in a rainbow (VIBGYOR)?
10. 10.⚖️ 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
11. 11.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) snow falling (c) a small rainbow (d) a magnet
12. 12.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) in front of you (c) under the ground (d) behind you
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) yeast (c) bright sunlight (d) a clear glass of water
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a mirror (c) turmeric powder (d) a sunny window
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 kept the same. (a) True (b) False
17. 17.⚖️ 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 same white paper (d) the amount of water
18. 18.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) a sheet of white paper (d) yeast
19. 19.☀️ What is white sunlight really made of? (a) tiny drops of water (b) tiny bits of dust (c) many colours mixed (d) only yellow light
20. 20.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
21. 21.🌈 In VIBGYOR, what number colour is violet?
22. 22.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
23. 23.🧺 Do we need turmeric powder for the water rainbow? (a) not needed (b) needed
24. 24.🧺 Which of these is not needed for the water rainbow? (a) a balloon (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
25. 25.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a sunny window
26. 26.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) blue (c) violet (d) green
27. 27.⚖️ 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) False (b) True
28. 28.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
31. 31.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) clouds (c) prisms (d) magnets
32. 32.🌈 In VIBGYOR, what number colour is yellow?
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 kept the same. (a) False (b) True
34. 34.⚖️ 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
35. 35.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is the one thing we change. (a) True (b) False
36. 36.True or false: a magnet is needed for the water rainbow. (a) True (b) False
37. 37.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns brighter (c) it floats away (d) it turns all red
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 time of day (b) the amount of water (c) brightness of rainbow
39. 39.🧺 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
40. 40.⚖️ 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 window (b) the amount of water (c) the time of day (d) brightness of rainbow

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