Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 864 · 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.⚖️ 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 kind of flower (c) the room it stands in (d) the amount of colour
2. 2.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
3. 3.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) food colour (c) a few hours of waiting (d) a glass of water
4. 4.⚖️ 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 what we measure. (a) True (b) False
5. 5.🧺 Do we need a balloon for the coloured flower experiment? (a) needed (b) not needed
6. 6.🛟 What should you do after handling food colour? (a) wipe them on walls (b) wash your hands (c) rub your eyes (d) lick your fingers
7. 7.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
8. 8.🧺 Do we need a glass of water for the coloured flower experiment? (a) not needed (b) needed
9. 9.True or false: a sugar cube lets water climb up it. (a) True (b) False
10. 10.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) food colour (d) yeast
11. 11.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a rubber eraser (d) a paper towel
12. 12.⚖️ 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) time for colour to show (c) the kind of flower (d) the amount of water
13. 13.🔮 What would change if the flower stood in plain water? (a) the petals turn red (b) the flower glows (c) no colour change (d) the stem turns blue
14. 14.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) it rains on them (d) through the air
15. 15.True or false: a battery cell is not needed for the coloured flower experiment. (a) False (b) True
16. 16.True or false: a flower stem does not let water climb. (a) True (b) False
17. 17.⚖️ 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
18. 18.💧 Which of these lets water climb up it? (a) a glass marble (b) a sugar cube (c) a rubber eraser (d) a plastic ruler
19. 19.⚖️ 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) False (b) True
20. 20.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
21. 21.🧺 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 few hours of waiting
22. 22.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the length of the stem”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.⚖️ 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 keep it the same (c) we measure it
24. 24.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
25. 25.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
26. 26.True or false: turmeric powder is needed for the coloured flower experiment. (a) True (b) False
27. 27.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a balloon (c) a white flower (d) a glass of water
29. 29.⚖️ 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) True (b) False
30. 30.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.🌼 Why do the petals keep pulling water up the stem? (a) the stem is hot (b) petals lose water to air (c) petals like colour (d) petals are magnetic
32. 32.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the petals turn bluish (c) the flower floats away (d) the stem turns to ice
33. 33.🔍 Which is the odd one out? (a) a rubber eraser (b) a paper towel (c) a piece of chalk (d) a strip of cloth
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of colour is what we measure. (a) False (b) True
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a magnet (b) a white flower (c) food colour (d) a glass of water
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.⚖️ 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) True (b) False
38. 38.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) colour climbs up it (c) it sinks at once (d) it turns to plastic
39. 39.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
40. 40.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) yeast (c) a battery cell (d) a balloon

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