Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 582 · 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? True or false: the same glass is the one thing we change. (a) True (b) False
2. 2.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) bright sunlight (c) a clear glass of water (d) a balloon
3. 3.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) it turns all red (c) the rainbow fades (d) it turns brighter
7. 7.🌈 In VIBGYOR, what number colour is indigo?
8. 8.🌈 In VIBGYOR, what number colour is orange?
9. 9.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) yeast (d) a sheet of white paper
10. 10.🌈 How many colours do we name in a rainbow (VIBGYOR)?
11. 11.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
12. 12.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
13. 13.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sunny window (c) a magnet (d) a clear glass of water
14. 14.⚖️ 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
15. 15.🧺 Do we need a battery cell for the water rainbow? (a) needed (b) not needed
16. 16.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
17. 17.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) stare at the Sun (c) never look at the Sun (d) look at it through glass
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 glass”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
20. 20.🧺 Which of these is needed for the water rainbow? (a) turmeric powder (b) a mirror (c) a sheet of white paper (d) yeast
21. 21.⚖️ 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 same glass
22. 22.⚖️ 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
23. 23.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
24. 24.🧺 Which of these is needed for the water rainbow? (a) yeast (b) a magnet (c) a clear glass of water (d) a balloon
25. 25.🌈 In VIBGYOR, what number colour is green?
26. 26.⚖️ 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
27. 27.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) snow falling (c) a shadow of ice (d) a small rainbow
28. 28.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
30. 30.🌈 In VIBGYOR, what number colour is red?
31. 31.⚖️ 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
32. 32.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
33. 33.⚖️ 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 time of day (c) brightness of rainbow (d) the amount of water
34. 34.⚖️ 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 keep it the same (c) we measure it
35. 35.True or false: a clear glass of water is not needed for the water rainbow. (a) True (b) False
36. 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
37. 37.⚖️ 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
38. 38.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
39. 39.📘 What do we call light bending as it passes from air into water? (a) refraction (b) reflection (c) evaporation (d) magnetism
40. 40.🌈 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

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