Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 957 · 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.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) bright sunlight (c) a clear glass of water (d) a sunny window
2. 2.🌈 In VIBGYOR, what number colour is yellow?
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 window”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.☀️ What is white sunlight really made of? (a) only yellow light (b) many colours mixed (c) tiny drops of water (d) tiny bits of dust
5. 5.🌈 How many colours do we name in a rainbow (VIBGYOR)?
6. 6.True or false: turmeric powder is not needed for the water rainbow. (a) True (b) False
7. 7.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it turns brighter (b) the rainbow fades (c) it floats away (d) it turns all red
8. 8.⚖️ 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) the same white paper (c) the amount of water (d) the same glass
9. 9.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) turmeric powder (c) a balloon (d) a sheet of white paper
10. 10.🧺 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 sunny window (d) a battery cell
11. 11.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sheet of white paper (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? What do we do with “the same glass”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a sunny window (c) bright sunlight (d) a clear glass of water
16. 16.⚖️ 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 same glass (c) the amount of water (d) the same white paper
17. 17.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
18. 18.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
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 what we measure. (a) True (b) False
20. 20.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
21. 21.🌈 In VIBGYOR, what number colour is blue?
22. 22.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) a balloon (c) a magnet (d) bright sunlight
23. 23.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: brightness of rainbow is the one thing we change. (a) False (b) True
24. 24.⚖️ 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
25. 25.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) a battery cell (d) a magnet
26. 26.⚖️ 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) False (b) True
27. 27.📘 What do we call light bending as it passes from air into water? (a) evaporation (b) refraction (c) magnetism (d) reflection
28. 28.🛟 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
29. 29.⚖️ 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 keep it the same (c) we measure it
30. 30.🛟 Why should the glass of water stand on a steady, flat place? (a) so it turns blue (b) so it gets hot (c) so it does not fall (d) so the Sun moves
31. 31.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a sheet of white paper (c) a mirror (d) bright sunlight
32. 32.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the paper makes colours (c) the water is coloured (d) water splits the light
33. 33.🌈 In VIBGYOR, what number colour is indigo?
34. 34.True or false: yeast is not needed for the water rainbow. (a) True (b) False
35. 35.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
36. 36.True or false: a sheet of white paper is not needed for the water rainbow. (a) False (b) True
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
39. 39.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a clear glass of water (c) a magnet (d) a sheet of white paper
40. 40.⚖️ 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) False (b) True

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