Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 88 · 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.True or false: a steel spoon lets water climb up it. (a) False (b) True
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a balloon (d) yeast
3. 3.True or false: turmeric powder is not needed for the coloured flower experiment. (a) True (b) False
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) food colour (d) yeast
5. 5.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is what we measure. (a) False (b) True
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a few hours of waiting (c) a white flower (d) food colour
8. 8.🔍 Which is the odd one out? (a) a piece of chalk (b) a paper towel (c) a strip of cloth (d) a glass marble
9. 9.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a glass of water (c) a balloon (d) a white flower
10. 10.⚖️ 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 colour (c) the amount of water (d) the kind of flower
11. 11.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) capillary action (c) melting (d) evaporation
12. 12.⚖️ 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
13. 13.🛟 What should you do after handling food colour? (a) wash your hands (b) wipe them on walls (c) lick your fingers (d) rub your eyes
14. 14.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) yeast (c) a battery cell (d) a few hours of waiting
15. 15.🧺 Do we need a white flower for the coloured flower experiment? (a) not needed (b) needed
16. 16.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
18. 18.🛟 Who should trim the flower stem? (a) a toddler (b) a pet (c) a grown-up (d) anyone, without looking
19. 19.💧 Dip a sugar cube into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
20. 20.True or false: a flower stem does not let water climb. (a) False (b) True
21. 21.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
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) time for colour to show (b) the length of the stem (c) the room it stands in
23. 23.⚖️ 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
24. 24.🧺 Do we need a mirror for the coloured flower experiment? (a) needed (b) not needed
25. 25.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a glass of water (c) yeast (d) a white flower
26. 26.💧 Which of these does not let water climb? (a) a piece of chalk (b) a steel spoon (c) a cotton thread (d) a sugar cube
27. 27.⚖️ 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 keep it the same (b) we measure it (c) we change it
28. 28.💧 Which of these lets water climb up it? (a) a plastic ruler (b) a steel spoon (c) a piece of chalk (d) a piece of foil
29. 29.⚖️ 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
30. 30.⚖️ 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 keep it the same (b) we change it (c) we measure it
31. 31.True or false: a sugar cube lets water climb up it. (a) False (b) True
32. 32.True or false: a flower stem lets water climb up it. (a) False (b) True
33. 33.⚖️ 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 water (b) the length of the stem (c) time for colour to show
34. 34.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) time for colour to show (b) the amount of colour (c) the kind of flower (d) the length of the stem
35. 35.True or false: a plastic ruler does not let water climb. (a) False (b) True
36. 36.🧺 Do we need a balloon for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 Do we need a magnet for the coloured flower experiment? (a) needed (b) not needed
38. 38.💧 Which of these does not let water climb? (a) a strip of cloth (b) a piece of chalk (c) a flower stem (d) a plastic ruler
39. 39.⚖️ 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 change it (c) we measure it
40. 40.💧 Which of these lets water climb up it? (a) a steel spoon (b) a plastic ruler (c) a sugar cube (d) a glass marble

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