Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 394 · 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? What do we do with “the same window”? (a) we measure it (b) we change it (c) we keep it the same
2. 2.🛟 Why should the glass of water stand on a steady, flat place? (a) so it gets hot (b) so it turns blue (c) so it does not fall (d) so the Sun moves
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 white paper”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the water is coloured (c) water splits the light (d) the glass is painted
5. 5.⚖️ 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) False (b) True
6. 6.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a clear glass of water (c) bright sunlight (d) a mirror
7. 7.🌈 In VIBGYOR, what number colour is green?
8. 8.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) magnets (b) balloons (c) prisms (d) clouds
9. 9.⚖️ 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
10. 10.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it in a mirror (c) never look at the Sun (d) look at it through glass
11. 11.⚖️ 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
12. 12.🌈 In VIBGYOR, what number colour is indigo?
13. 13.⚖️ 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) brightness of rainbow (c) the same window
14. 14.🌈 In VIBGYOR, what number colour is red?
15. 15.🌈 How many colours do we name in a rainbow (VIBGYOR)?
16. 16.🧺 Which of these is not needed for the water rainbow? (a) a mirror (b) a clear glass of water (c) bright sunlight (d) a sheet of white paper
17. 17.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) turmeric powder (c) bright sunlight (d) a clear glass of water
18. 18.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a magnet (b) a clear glass of water (c) bright sunlight (d) a sunny window
19. 19.🌈 In a rainbow in the sky, which colour is on the outside (top) edge? (a) red (b) violet (c) blue (d) green
20. 20.☀️ What is white sunlight really made of? (a) only yellow light (b) tiny bits of dust (c) many colours mixed (d) tiny drops of water
21. 21.⚖️ 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) False (b) True
22. 22.🌈 In VIBGYOR, what number colour is orange?
23. 23.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
24. 24.🔮 Predict: you spray fine water drops with the Sun behind you. What may you see? (a) a shadow of ice (b) a small rainbow (c) snow falling (d) a magnet
25. 25.⚖️ 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) brightness of rainbow (c) the amount of water (d) the same window
26. 26.True or false: bright sunlight is not needed for the water rainbow. (a) True (b) False
27. 27.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
28. 28.🧺 Which of these is not needed for the water rainbow? (a) a sheet of white paper (b) a battery cell (c) a sunny window (d) a clear glass of water
29. 29.🌈 In VIBGYOR, what number colour is violet?
30. 30.True or false: yeast is needed for the water rainbow. (a) True (b) False
31. 31.🧺 Do we need a balloon for the water rainbow? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the water rainbow? (a) a battery cell (b) turmeric powder (c) a mirror (d) a sheet of white paper
33. 33.🧺 Which of these is not needed for the water rainbow? (a) turmeric powder (b) a sunny window (c) a clear glass of water (d) a sheet of white paper
34. 34.True or false: a magnet is needed for the water rainbow. (a) False (b) True
35. 35.🧺 Which of these is needed for the water rainbow? (a) a sunny window (b) a battery cell (c) turmeric powder (d) yeast
36. 36.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same window is what we measure. (a) True (b) False
37. 37.🌈 In VIBGYOR, what number colour is blue?
38. 38.🧺 Which of these is needed for the water rainbow? (a) a balloon (b) a magnet (c) a battery cell (d) bright sunlight
39. 39.⚖️ 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
40. 40.🧺 Do we need a sunny window for the water rainbow? (a) needed (b) not needed

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