Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 839 · 40 questions

What you do (Water climbs thin tubes): 1. Mix food colour into a glass of water. 2. An adult trims the flower stem and stands it in the coloured water. 3. Check the petals every few hours and draw what you see. 4. Wash your hands after handling food colour.

1. 1.🛟 Who should trim the flower stem? (a) a pet (b) anyone, without looking (c) a grown-up (d) a toddler
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
3. 3.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is what we measure. (a) True (b) False
4. 4.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
5. 5.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) colour climbs up it (b) nothing ever happens (c) it sinks at once (d) it turns to plastic
6. 6.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the length of the stem is the one thing we change. (a) False (b) True
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a magnet (c) a white flower (d) a glass of water
8. 8.🛟 What should you do after handling food colour? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) wipe them on walls
9. 9.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: time for colour to show is kept the same. (a) True (b) False
11. 11.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a balloon (c) a battery cell (d) a glass of water
13. 13.💧 Which of these lets water climb up it? (a) a flower stem (b) a glass marble (c) a steel spoon (d) a plastic ruler
14. 14.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
15. 15.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is the one thing we change. (a) True (b) False
16. 16.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a few hours of waiting (c) a magnet (d) a mirror
17. 17.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a rubber eraser (d) a cotton thread
18. 18.🔍 Which is the odd one out? (a) a rubber eraser (b) a piece of foil (c) a plastic ruler (d) a sugar cube
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a battery cell (d) a few hours of waiting
20. 20.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is what we measure. (a) False (b) True
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the amount of water (c) the kind of flower (d) time for colour to show
23. 23.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) the flower glows (d) no colour change
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a magnet (c) yeast (d) a white flower
25. 25.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
26. 26.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) turmeric powder (b) food colour (c) a glass of water (d) a white flower
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
28. 28.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a battery cell (c) yeast (d) food colour
29. 29.💧 Which of these lets water climb up it? (a) a steel spoon (b) a piece of chalk (c) a piece of foil (d) a glass marble
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a magnet (d) a white flower
32. 32.True or false: a plastic ruler does not let water climb. (a) True (b) False
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) turmeric powder (c) a glass of water (d) food colour
34. 34.🔍 Which is the odd one out? (a) a strip of cloth (b) a rubber eraser (c) a glass marble (d) a steel spoon
35. 35.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) False (b) True
36. 36.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.💧 Which of these does not let water climb? (a) a cotton thread (b) a paper towel (c) a piece of chalk (d) a rubber eraser
38. 38.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
39. 39.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through the air (c) it rains on them (d) through tiny stem tubes
40. 40.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of colour”? (a) we change it (b) we measure it (c) we keep it the same

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