Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 477 · 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.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a magnet (c) a sunny window (d) a clear glass of water
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
3. 3.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a magnet (b) a shadow of ice (c) a small rainbow (d) snow falling
4. 4.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) water splits the light (d) the paper makes colours
5. 5.True or false: a sunny window is needed for the water rainbow. (a) False (b) True
6. 6.True or false: a balloon is needed for the water rainbow. (a) True (b) False
7. 7.🛟 Which rule keeps you safe when working with sunlight? (a) look at it in a mirror (b) look at it through glass (c) never look at the Sun (d) stare at the Sun
8. 8.🧺 Which of these is not needed for the water rainbow? (a) a sunny window (b) bright sunlight (c) a clear glass of water (d) a magnet
9. 9.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is kept the same. (a) False (b) True
10. 10.⚖️ 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
11. 11.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
12. 12.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) blue (b) violet (c) green (d) red
13. 13.🌈 In VIBGYOR, what number colour is green?
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a balloon (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
15. 15.True or false: turmeric powder is needed for the water rainbow. (a) False (b) True
16. 16.🧺 Do we need a mirror for the water rainbow? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) bright sunlight (c) a clear glass of water (d) a sheet of white paper
18. 18.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sunny window (d) a sheet of white paper
19. 19.🌈 In VIBGYOR, what number colour is orange?
20. 20.⚖️ 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
21. 21.🌈 How many colours do we name in a rainbow (VIBGYOR)?
22. 22.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) tiny drops of water (d) many colours mixed
23. 23.⚖️ 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) True (b) False
24. 24.🌈 In VIBGYOR, what number colour is indigo?
25. 25.🌈 In VIBGYOR, what number colour is yellow?
26. 26.🧺 Which of these is needed for the water rainbow? (a) a clear glass of water (b) yeast (c) a mirror (d) turmeric powder
27. 27.True or false: a balloon is not needed for the water rainbow. (a) True (b) False
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 change it (b) we keep it the same (c) we measure it
29. 29.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
30. 30.True or false: a magnet is needed for the water rainbow. (a) True (b) False
31. 31.🌈 In VIBGYOR, what number colour is blue?
32. 32.⚖️ 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) the same window (d) the amount of water
33. 33.🧺 Which of these is not needed for the water rainbow? (a) a clear glass of water (b) a balloon (c) bright sunlight (d) a sunny window
34. 34.📘 What do we call light bending as it passes from air into water? (a) refraction (b) evaporation (c) reflection (d) magnetism
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the water rainbow? (a) a battery cell (b) a clear glass of water (c) a sheet of white paper (d) bright sunlight
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is the one thing we change. (a) True (b) False
39. 39.🧺 Do we need a magnet for the water rainbow? (a) needed (b) not needed
40. 40.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) prisms (c) balloons (d) clouds

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