Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 312 · 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 toddler (b) anyone, without looking (c) a pet (d) a grown-up
2. 2.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
3. 3.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) food colour (c) a battery cell (d) a balloon
4. 4.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
5. 5.🧺 Do we need a mirror for the coloured flower experiment? (a) not needed (b) needed
6. 6.⚖️ 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 colour (b) the room it stands in (c) the kind of flower (d) the length of the stem
7. 7.⚖️ 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
8. 8.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it turns to plastic (b) colour climbs up it (c) it sinks at once (d) nothing ever happens
9. 9.⚖️ 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 amount of colour (b) time for colour to show (c) the length of the stem
10. 10.⚖️ 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 water (c) time for colour to show
11. 11.⚖️ 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 what we measure. (a) True (b) False
12. 12.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a glass of water (c) a few hours of waiting (d) a battery cell
13. 13.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
14. 14.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) food colour (d) a few hours of waiting
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (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 “time for colour to show”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) food colour (d) a glass of water
18. 18.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a piece of foil (c) a flower stem (d) a steel spoon
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a magnet (c) a white flower (d) a balloon
20. 20.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they fall off at once (b) they turn two colours (c) they all turn green (d) they stay white
21. 21.🌼 Why do the petals keep pulling water up the stem? (a) petals lose water to air (b) petals are magnetic (c) the stem is hot (d) petals like colour
22. 22.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) yeast (c) a white flower (d) a few hours of waiting
23. 23.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a glass of water (c) food colour (d) a mirror
24. 24.🔍 Which is the odd one out? (a) a sugar cube (b) a flower stem (c) a plastic ruler (d) a paper towel
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.True or false: a sugar cube does not let water climb. (a) True (b) False
27. 27.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
28. 28.True or false: a steel spoon does not let water climb. (a) True (b) False
29. 29.⚖️ 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
30. 30.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a battery cell (b) food colour (c) a white flower (d) a few hours of waiting
31. 31.⚖️ 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
32. 32.⚖️ 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 measure it (c) we keep it the same
33. 33.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
34. 34.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
35. 35.True or false: a strip of cloth lets water climb up it. (a) True (b) False
36. 36.🧺 Do we need a glass of water for the coloured flower experiment? (a) needed (b) not needed
37. 37.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
38. 38.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) the petals turn red (c) no colour change (d) the flower glows
39. 39.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a piece of chalk (d) a rubber eraser
40. 40.True or false: a rubber eraser lets water climb up it. (a) False (b) True

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