Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 44 · 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.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
2. 2.True or false: a paper towel does not let water climb. (a) True (b) False
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 the one thing we change. (a) False (b) True
4. 4.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
5. 5.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a grown-up (c) a toddler (d) a pet
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
7. 7.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
8. 8.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) not needed (b) needed
9. 9.🛟 What should you do after handling food colour? (a) rub your eyes (b) lick your fingers (c) wipe them on walls (d) wash your hands
10. 10.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the room it stands in”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
12. 12.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
13. 13.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
14. 14.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) no colour change (d) the stem turns blue
15. 15.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) it sinks at once (c) colour climbs up it (d) nothing ever happens
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) food colour (c) a magnet (d) a white flower
17. 17.True or false: yeast is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a balloon (d) a white flower
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a glass of water (d) yeast
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
21. 21.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is kept the same. (a) True (b) False
23. 23.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) a balloon (c) a few hours of waiting (d) a mirror
25. 25.💧 Which of these lets water climb up it? (a) a steel spoon (b) a flower stem (c) a plastic ruler (d) a glass marble
26. 26.⚖️ 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) True (b) False
27. 27.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
28. 28.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a balloon (c) a few hours of waiting (d) a white flower
30. 30.True or false: a piece of foil lets water climb up it. (a) True (b) False
31. 31.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a few hours of waiting (d) a glass of water
33. 33.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) True (b) False
34. 34.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
35. 35.🔍 Which is the odd one out? (a) a paper towel (b) a flower stem (c) a plastic ruler (d) a cotton thread
36. 36.True or false: a piece of chalk does not let water climb. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) a paper towel (d) a piece of foil
38. 38.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) time for colour to show (b) the kind of flower (c) the room it stands in (d) the length of the stem
39. 39.🔍 Which is the odd one out? (a) a piece of foil (b) a steel spoon (c) a glass marble (d) a flower stem
40. 40.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it

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