Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 999 · 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.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so the Sun moves (d) so it does not fall
2. 2.📘 What do we call light bending as it passes from air into water? (a) reflection (b) evaporation (c) magnetism (d) refraction
3. 3.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny drops of water (c) only yellow light (d) tiny bits of dust
4. 4.⚖️ 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
5. 5.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is the one thing we change. (a) True (b) False
6. 6.🧺 Do we need bright sunlight for the water rainbow? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a battery cell (c) yeast (d) a clear glass of water
8. 8.🌈 How many colours do we name in a rainbow (VIBGYOR)?
9. 9.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) look at it through glass (d) never look at the Sun
10. 10.🧺 Do we need a balloon for the water rainbow? (a) needed (b) not needed
11. 11.True or false: a sheet of white paper is not needed for the water rainbow. (a) True (b) False
12. 12.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a sheet of white paper (c) a battery cell (d) a magnet
13. 13.🌈 In VIBGYOR, what number colour is red?
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 measure it (b) we keep it the same (c) we change it
15. 15.⚖️ 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
16. 16.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
17. 17.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a magnet (c) a clear glass of water (d) bright sunlight
19. 19.⚖️ 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) brightness of rainbow (d) the time of day
20. 20.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a battery cell (c) a clear glass of water (d) bright sunlight
21. 21.True or false: a mirror is needed for the water rainbow. (a) True (b) False
22. 22.True or false: a sunny window is not needed for the water rainbow. (a) True (b) False
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is kept the same? (a) brightness of rainbow (b) the time of day (c) the amount of water
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
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 measure it (b) we change it (c) we keep it the same
26. 26.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) clouds (d) prisms
27. 27.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a sunny window (c) a magnet (d) yeast
28. 28.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) bright sunlight (c) yeast (d) a mirror
29. 29.🧺 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) bright sunlight
30. 30.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the water rainbow? (a) yeast (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) yeast (c) bright sunlight (d) a clear glass of water
33. 33.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) snow falling (c) a shadow of ice (d) a magnet
34. 34.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a mirror (c) a sheet of white paper (d) a clear glass of water
35. 35.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
36. 36.⚖️ 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 window (d) the amount of water
37. 37.⚖️ 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 measure it (c) we keep it the same
38. 38.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
39. 39.True or false: yeast is needed for the water rainbow. (a) False (b) True
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 measure it (b) we change it (c) we keep it the same

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