Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 898 · 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) time for colour to show (c) the kind of flower (d) the room it stands in
2. 2.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
3. 3.🛟 What should you do after handling food colour? (a) lick your fingers (b) wipe them on walls (c) rub your eyes (d) wash your hands
4. 4.True or false: a battery cell is not needed for the coloured flower experiment. (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 length of the stem”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) yeast (c) a balloon (d) a glass of water
7. 7.🧺 Which of these is not needed for the coloured flower experiment? (a) a battery cell (b) a glass of water (c) a white flower (d) a few hours of waiting
8. 8.🛟 Who should trim the flower stem? (a) a grown-up (b) a pet (c) a toddler (d) anyone, without looking
9. 9.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) a glass of water (c) food colour (d) a white flower
10. 10.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
11. 11.True or false: a piece of chalk lets water climb up it. (a) False (b) True
12. 12.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a mirror (c) a few hours of waiting (d) a glass of water
13. 13.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the amount of water is the one thing we change. (a) True (b) False
14. 14.💧 Which of these lets water climb up it? (a) a piece of foil (b) a flower stem (c) a steel spoon (d) a plastic ruler
15. 15.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
16. 16.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) it is sprayed on (d) through the air
17. 17.🧺 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 white flower (d) a magnet
18. 18.🧺 Which of these is needed for the coloured flower experiment? (a) food colour (b) turmeric powder (c) a magnet (d) a mirror
19. 19.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) nothing ever happens (b) it sinks at once (c) it turns to plastic (d) colour climbs up it
20. 20.🔍 What do you see a day after a white flower stands in blue water? (a) the water turns green (b) the stem turns to ice (c) the petals turn bluish (d) the flower floats away
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) food colour (d) a white flower
22. 22.⚖️ 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 measure it (b) we change it (c) we keep it the same
23. 23.⚖️ 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
24. 24.📘 What is it called when water climbs up thin tubes or paper by itself? (a) capillary action (b) melting (c) magnetism (d) evaporation
25. 25.🔍 Which is the odd one out? (a) a piece of foil (b) a strip of cloth (c) a piece of chalk (d) a cotton thread
26. 26.⚖️ 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 length of the stem (c) the amount of water (d) time for colour to show
27. 27.⚖️ 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) time for colour to show (c) the amount of water
28. 28.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
29. 29.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
30. 30.True or false: a paper towel does not let water climb. (a) False (b) True
31. 31.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a white flower (d) yeast
32. 32.⚖️ 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
33. 33.True or false: a balloon is needed for the coloured flower experiment. (a) True (b) False
34. 34.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
35. 35.💧 Which of these does not let water climb? (a) a piece of chalk (b) a cotton thread (c) a flower stem (d) a glass marble
36. 36.⚖️ 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) True (b) False
37. 37.🔍 Which is the odd one out? (a) a rubber eraser (b) a cotton thread (c) a glass marble (d) a steel spoon
38. 38.True or false: a piece of chalk does not let water climb. (a) False (b) True
39. 39.🧺 Do we need a few hours of waiting for the coloured flower experiment? (a) needed (b) not needed
40. 40.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False

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