Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 427 · 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.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns all red (b) the rainbow fades (c) it turns brighter (d) it floats away
2. 2.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is what we measure. (a) False (b) True
3. 3.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a battery cell (d) a clear glass of water
4. 4.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) bright sunlight (c) a sheet of white paper (d) yeast
5. 5.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) bright sunlight (c) turmeric powder (d) a sunny window
6. 6.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
7. 7.🌈 How many colours do we name in a rainbow (VIBGYOR)?
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a clear glass of water (c) a sunny window (d) a balloon
9. 9.🌈 Why does sunlight make a rainbow through a glass of water? (a) the water is coloured (b) the paper makes colours (c) water splits the light (d) the glass is painted
10. 10.🛟 Why should the glass of water stand on a steady, flat place? (a) so it does not fall (b) so it turns blue (c) so the Sun moves (d) so it gets hot
11. 11.🌦️ To see a rainbow in the sky, where must the Sun be? (a) straight above you (b) under the ground (c) in front of you (d) behind you
12. 12.🛟 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
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a clear glass of water (b) a magnet (c) bright sunlight (d) a sunny window
14. 14.⚖️ 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
15. 15.🌈 In VIBGYOR, what number colour is red?
16. 16.⚖️ 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 measure it (b) we change it (c) we keep it the same
17. 17.⚖️ 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
18. 18.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) tiny drops of water (d) only yellow light
19. 19.⚖️ 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 time of day (b) brightness of rainbow (c) the same white paper (d) the amount of water
20. 20.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) prisms (c) balloons (d) magnets
21. 21.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
22. 22.🧺 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 battery cell (d) a sheet of white paper
23. 23.🌈 In VIBGYOR, what number colour is yellow?
24. 24.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
25. 25.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) yellow (b) red (c) orange (d) violet
26. 26.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
27. 27.True or false: a balloon is needed for the water rainbow. (a) False (b) True
28. 28.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Which of these is needed for the water rainbow? (a) yeast (b) bright sunlight (c) turmeric powder (d) a battery cell
30. 30.⚖️ 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
31. 31.⚖️ 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) True (b) False
32. 32.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a mirror (c) a sunny window (d) yeast
33. 33.⚖️ 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) the time of day (c) brightness of rainbow
34. 34.⚖️ 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
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) brightness of rainbow (b) the amount of water (c) the same window (d) the same glass
36. 36.True or false: a mirror is needed for the water rainbow. (a) False (b) True
37. 37.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
38. 38.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a clear glass of water (c) turmeric powder (d) bright sunlight
39. 39.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a magnet (c) a small rainbow (d) snow falling
40. 40.True or false: a magnet is not needed for the water rainbow. (a) False (b) True

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