Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 713 · 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? Which of these is the one thing we change? (a) the same glass (b) the same window (c) the same white paper (d) the amount of water
2. 2.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a mirror (c) turmeric powder (d) a magnet
3. 3.⚖️ 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
4. 4.🌈 In VIBGYOR, what number colour is violet?
5. 5.⚖️ 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) False (b) True
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 keep it the same (c) we measure it
7. 7.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a balloon
8. 8.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) turmeric powder (c) a clear glass of water (d) a sheet of white paper
9. 9.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it turns all red (c) it turns brighter (d) it floats away
10. 10.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a battery cell (d) bright sunlight
11. 11.🌈 In VIBGYOR, what number colour is orange?
12. 12.🌈 In VIBGYOR, what number colour is red?
13. 13.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a sunny window (d) bright sunlight
14. 14.🧺 Do we need yeast for the water rainbow? (a) needed (b) not needed
15. 15.🔮 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
16. 16.🌈 How many colours do we name in a rainbow (VIBGYOR)?
17. 17.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) prisms (b) clouds (c) magnets (d) balloons
18. 18.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
19. 19.⚖️ 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) True (b) False
20. 20.⚖️ 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
21. 21.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) magnetism (c) reflection (d) refraction
22. 22.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a mirror (c) a clear glass of water (d) bright sunlight
23. 23.☀️ What is white sunlight really made of? (a) tiny bits of dust (b) many colours mixed (c) only yellow light (d) tiny drops of water
24. 24.True or false: yeast is needed for the water rainbow. (a) True (b) False
25. 25.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
26. 26.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) in front of you (c) behind you (d) straight above you
27. 27.🌈 In VIBGYOR, what number colour is blue?
28. 28.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a sunny window (c) bright sunlight (d) a balloon
30. 30.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
31. 31.⚖️ 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 white paper
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a sheet of white paper (c) a sunny window (d) yeast
33. 33.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) never look at the Sun (c) look at it through glass (d) look at it in a mirror
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a magnet (c) a sheet of white paper (d) bright sunlight
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 same white paper (b) the same window (c) brightness of rainbow (d) the time of day
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sheet of white paper
37. 37.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the time of day is what we measure. (a) True (b) False
39. 39.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) green (c) red (d) violet
40. 40.⚖️ 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 keep it the same (b) we measure it (c) we change it

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