Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 605 · 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.True or false: a magnet is needed for the water rainbow. (a) False (b) True
2. 2.True or false: a mirror is not needed for the water rainbow. (a) True (b) False
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a sunny window (c) yeast (d) a sheet of white paper
4. 4.⚖️ 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 change it (b) we keep it the same (c) we measure it
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.True or false: a mirror is needed for the water rainbow. (a) True (b) False
7. 7.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) clouds (b) balloons (c) magnets (d) prisms
8. 8.📘 What do we call light bending as it passes from air into water? (a) magnetism (b) evaporation (c) refraction (d) reflection
9. 9.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a small rainbow (b) a magnet (c) a shadow of ice (d) snow falling
10. 10.🌈 In VIBGYOR, what number colour is green?
11. 11.True or false: a balloon is needed for the water rainbow. (a) True (b) False
12. 12.True or false: a battery cell is needed for the water rainbow. (a) False (b) True
13. 13.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) it floats away (b) the rainbow fades (c) it turns brighter (d) it turns all red
14. 14.🌈 How many colours do we name in a rainbow (VIBGYOR)?
15. 15.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) yeast (c) bright sunlight (d) a sunny window
16. 16.⚖️ 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) False (b) True
17. 17.⚖️ 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 amount of water (c) the same glass
18. 18.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
19. 19.⚖️ 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
20. 20.🛟 Which rule keeps you safe when working with sunlight? (a) look at it through glass (b) never look at the Sun (c) stare at the Sun (d) look at it in a mirror
21. 21.☀️ What is white sunlight really made of? (a) tiny drops of water (b) only yellow light (c) many colours mixed (d) tiny bits of dust
22. 22.⚖️ 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 window (b) the amount of water (c) the time of day (d) the same white paper
23. 23.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
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 white paper”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.🧺 Do we need a sheet of white paper for the water rainbow? (a) needed (b) not needed
26. 26.⚖️ 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) True (b) False
27. 27.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a battery cell (d) a sheet of white paper
32. 32.⚖️ 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
33. 33.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a battery cell (c) a sheet of white paper (d) a sunny window
34. 34.True or false: yeast is not needed for the water rainbow. (a) True (b) False
35. 35.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it gets hot (c) so it turns blue (d) so it does not fall
36. 36.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) a sheet of white paper (c) a clear glass of water (d) bright sunlight
37. 37.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) green (c) red (d) blue
38. 38.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) a sheet of white paper (c) bright sunlight (d) a mirror
39. 39.🧺 Do we need a battery cell for the water rainbow? (a) not needed (b) needed
40. 40.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) orange (b) violet (c) red (d) yellow

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