Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 978 · 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.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) through the air (c) it is sprayed on (d) it rains on them
3. 3.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
4. 4.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
5. 5.💧 Which of these lets water climb up it? (a) a glass marble (b) a plastic ruler (c) a steel spoon (d) a paper towel
6. 6.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
7. 7.⚖️ 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) the amount of water (b) the length of the stem (c) the amount of colour (d) the room it stands in
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a few hours of waiting (c) a glass of water (d) a magnet
9. 9.🔍 Which is the odd one out? (a) a piece of chalk (b) a steel spoon (c) a strip of cloth (d) a cotton thread
10. 10.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
11. 11.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a battery cell (c) food colour (d) a white flower
12. 12.💧 Which of these does not let water climb? (a) a paper towel (b) a piece of foil (c) a flower stem (d) a sugar cube
13. 13.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they stay white (b) they all turn green (c) they turn two colours (d) they fall off at once
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a cotton thread (b) a paper towel (c) a plastic ruler (d) a sugar cube
16. 16.⚖️ 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 keep it the same (c) we change it
17. 17.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it turns to plastic (c) colour climbs up it (d) it sinks at once
19. 19.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
20. 20.💧 Dip a steel spoon 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? What do we do with “time for colour to show”? (a) we measure it (b) we keep it the same (c) we change it
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is kept the same. (a) False (b) True
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a white flower (c) a battery cell (d) a few hours of waiting
24. 24.⚖️ 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) False (b) True
25. 25.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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) False (b) True
27. 27.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) magnetism (c) melting (d) evaporation
28. 28.🔍 Which is the odd one out? (a) a paper towel (b) a piece of foil (c) a plastic ruler (d) a rubber eraser
29. 29.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
30. 30.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a steel spoon (c) a glass marble (d) a cotton thread
31. 31.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is kept the same. (a) False (b) True
32. 32.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
33. 33.💧 Which of these lets water climb up it? (a) a glass marble (b) a piece of foil (c) a plastic ruler (d) a sugar cube
34. 34.⚖️ 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 measure it (b) we change it (c) we keep it the same
35. 35.🔍 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 flower floats away (d) the petals turn bluish
36. 36.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) a white flower (d) a balloon
37. 37.True or false: a flower stem lets water climb up it. (a) False (b) True
38. 38.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
39. 39.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.True or false: a cotton thread does not let water climb. (a) True (b) False

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