Rainbow Science Experiment Worksheet

Science experiments lesson 5: Make a rainbow with water and sunlight · Set 170 · 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: yeast is not needed for the water rainbow. (a) True (b) False
2. 2.🧺 Do we need bright sunlight for the water rainbow? (a) needed (b) not needed
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) snow falling (d) a small rainbow
4. 4.🔮 What happens if a cloud covers the Sun during the rainbow experiment? (a) the rainbow fades (b) it floats away (c) it turns brighter (d) it turns all red
5. 5.True or false: a sunny window is not needed for the water rainbow. (a) False (b) True
6. 6.🧺 Do we need a mirror for the water rainbow? (a) not needed (b) needed
7. 7.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? Which of these is what we measure? (a) the same window (b) the time of day (c) the same white paper (d) brightness of rainbow
8. 8.⚖️ 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
9. 9.🔮 Raindrops in the sky act like tiny ___ for sunlight. (a) balloons (b) magnets (c) clouds (d) prisms
10. 10.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
11. 11.🛟 Which rule keeps you safe when working with sunlight? (a) never look at the Sun (b) look at it in a mirror (c) stare at the Sun (d) look at it through glass
12. 12.☀️ What is white sunlight really made of? (a) many colours mixed (b) only yellow light (c) tiny bits of dust (d) tiny drops of water
13. 13.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a sheet of white paper (b) a balloon (c) a sunny window (d) a clear glass of water
14. 14.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) a battery cell (b) bright sunlight (c) a sheet of white paper (d) a clear glass of water
15. 15.🛟 Why should the glass of water stand on a steady, flat place? (a) so the Sun moves (b) so it does not fall (c) so it gets hot (d) so it turns blue
16. 16.True or false: a magnet is needed for the water rainbow. (a) False (b) True
17. 17.🌈 Why does sunlight make a rainbow through a glass of water? (a) the paper makes colours (b) the glass is painted (c) water splits the light (d) the water is coloured
18. 18.True or false: a battery cell is not needed for the water rainbow. (a) False (b) True
19. 19.🧺 Which of these is needed for the water rainbow? (a) a sheet of white paper (b) a balloon (c) a battery cell (d) a mirror
20. 20.True or false: bright sunlight is needed for the water rainbow. (a) False (b) True
21. 21.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a mirror (c) a sheet of white paper (d) a sunny window
22. 22.True or false: a clear glass of water is not needed for the water rainbow. (a) False (b) True
23. 23.🌈 In VIBGYOR, what number colour is green?
24. 24.🌈 How many colours do we name in a rainbow (VIBGYOR)?
25. 25.⚖️ 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 keep it the same (b) we change it (c) we measure it
26. 26.🌈 In VIBGYOR, what number colour is red?
27. 27.🌈 In VIBGYOR, what number colour is violet?
28. 28.🧺 Do we need a sheet of white paper for the water rainbow? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the water rainbow. Which one is NOT needed? (a) yeast (b) a sheet of white paper (c) a sunny window (d) a clear glass of water
30. 30.🌈 In VIBGYOR, what number colour is indigo?
31. 31.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same white paper is kept the same. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: a sunny window 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? True or false: brightness of rainbow is kept the same. (a) False (b) True
35. 35.⚖️ 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
36. 36.🧺 Which of these is not needed for the water rainbow? (a) bright sunlight (b) a clear glass of water (c) a balloon (d) a sunny window
37. 37.True or false: a sheet of white paper is needed for the water rainbow. (a) False (b) True
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 glass”? (a) we measure it (b) we change it (c) we keep it the same
39. 39.🌈 In VIBGYOR, what number colour is blue?
40. 40.⚖️ 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

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids