Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 659 · 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) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
2. 2.💧 Which of these lets water climb up it? (a) a cotton thread (b) a plastic ruler (c) a rubber eraser (d) a piece of foil
3. 3.⚖️ 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 length of the stem (b) the amount of water (c) the kind of flower (d) the room it stands in
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) colour climbs up it (c) nothing ever happens (d) it turns to plastic
7. 7.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
8. 8.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
9. 9.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is kept the same. (a) True (b) False
10. 10.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) a sugar cube (b) a steel spoon (c) a piece of foil (d) a rubber eraser
12. 12.💧 Which of these does not let water climb? (a) a steel spoon (b) a paper towel (c) a flower stem (d) a piece of chalk
13. 13.🔮 What would change if the flower stood in plain water? (a) the flower glows (b) the petals turn red (c) the stem turns blue (d) no colour change
14. 14.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they fall off at once (c) they all turn green (d) they stay white
15. 15.🔍 Which is the odd one out? (a) a plastic ruler (b) a glass marble (c) a rubber eraser (d) a cotton thread
16. 16.💧 Which of these does not let water climb? (a) a strip of cloth (b) a flower stem (c) a rubber eraser (d) a sugar cube
17. 17.💧 Which of these lets water climb up it? (a) a glass marble (b) a rubber eraser (c) a strip of cloth (d) a piece of foil
18. 18.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the room it stands in is the one thing we change. (a) True (b) False
19. 19.🌼 How does coloured water reach the petals? (a) through the air (b) it rains on them (c) it is sprayed on (d) through tiny stem tubes
20. 20.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
21. 21.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) evaporation (d) melting
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the kind of flower (b) time for colour to show (c) the length of the stem
23. 23.⚖️ 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 kept the same. (a) False (b) True
24. 24.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
25. 25.⚖️ 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
26. 26.💧 Which of these does not let water climb? (a) a piece of foil (b) a sugar cube (c) a paper towel (d) a flower stem
27. 27.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
28. 28.💧 Which of these does not let water climb? (a) a strip of cloth (b) a plastic ruler (c) a sugar cube (d) a piece of chalk
29. 29.💧 Dip a cotton thread into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is kept the same? (a) the length of the stem (b) the amount of colour (c) time for colour to show
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
33. 33.🌼 Why do the petals keep pulling water up the stem? (a) petals like colour (b) the stem is hot (c) petals are magnetic (d) petals lose water to air
34. 34.True or false: a plastic ruler lets water climb up it. (a) True (b) False
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) a white flower (c) food colour (d) a few hours of waiting
37. 37.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the amount of water”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.True or false: a piece of chalk lets water climb up it. (a) False (b) True
39. 39.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
40. 40.🧺 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) food colour (d) a battery cell

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