Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 967 · 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 the Sun moves (b) so it turns blue (c) so it does not fall (d) so it gets hot
2. 2.True or false: yeast is needed for the water rainbow. (a) False (b) True
3. 3.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) bright sunlight (b) a mirror (c) a clear glass of water (d) a sunny window
4. 4.⚖️ 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 glass (b) the amount of water (c) brightness of rainbow (d) the time of day
5. 5.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) snow falling (b) a shadow of ice (c) a magnet (d) a small rainbow
6. 6.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) violet (b) blue (c) green (d) red
7. 7.⚖️ 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
8. 8.🧺 Do we need a sunny window for the water rainbow? (a) not needed (b) needed
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.🔮 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
11. 11.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
12. 12.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a sheet of white paper (c) a mirror (d) a sunny window
13. 13.🌈 How many colours do we name in a rainbow (VIBGYOR)?
14. 14.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
15. 15.⚖️ 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
16. 16.True or false: a sheet of white paper is needed for the water rainbow. (a) True (b) False
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sunny window (b) a balloon (c) bright sunlight (d) a clear glass of water
18. 18.🧺 Which of these is needed for the water rainbow? (a) a mirror (b) a magnet (c) a sunny window (d) yeast
19. 19.🧺 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) bright sunlight
20. 20.🧺 Do we need a clear glass of water for the water rainbow? (a) not needed (b) needed
21. 21.🌦️ To see a rainbow in the sky, where must the Sun be? (a) in front of you (b) under the ground (c) straight above you (d) behind you
22. 22.⚖️ 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 same glass (b) brightness of rainbow (c) the amount of water
23. 23.🌈 Why does sunlight make a rainbow through a glass of water? (a) water splits the light (b) the glass is painted (c) the water is coloured (d) the paper makes colours
24. 24.True or false: a battery cell is needed for the water rainbow. (a) True (b) False
25. 25.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
26. 26.🌈 In a rainbow in the sky, which colour is on the inside (bottom) edge? (a) violet (b) yellow (c) red (d) orange
27. 27.📘 What do we call light bending as it passes from air into water? (a) reflection (b) refraction (c) magnetism (d) evaporation
28. 28.🌈 In VIBGYOR, what number colour is blue?
29. 29.🌈 In VIBGYOR, what number colour is red?
30. 30.⚖️ 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
31. 31.⚖️ 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
32. 32.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) bright sunlight (d) a sunny window
33. 33.True or false: a mirror is needed for the water rainbow. (a) False (b) True
34. 34.⚖️ 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
35. 35.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) prisms (c) clouds (d) magnets
36. 36.True or false: a balloon is needed for the water rainbow. (a) True (b) False
37. 37.☀️ What is white sunlight really made of? (a) many colours mixed (b) tiny bits of dust (c) tiny drops of water (d) only yellow light
38. 38.⚖️ 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 measure it (b) we change it (c) we keep it the same
39. 39.True or false: turmeric powder is not needed for the water rainbow. (a) False (b) True
40. 40.🧺 Which of these is needed for the water rainbow? (a) a magnet (b) a balloon (c) a clear glass of water (d) a battery cell

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