Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 542 · 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 kept the same? (a) the room it stands in (b) time for colour to show (c) the length of the stem
2. 2.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? True or false: the kind of flower is the one thing we change. (a) True (b) False
3. 3.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the flower floats away (c) the water turns green (d) the petals turn bluish
4. 4.True or false: a white flower is not needed for the coloured flower experiment. (a) False (b) True
5. 5.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a mirror (b) a white flower (c) a glass of water (d) food colour
6. 6.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
7. 7.💧 Which of these lets water climb up it? (a) a piece of foil (b) a rubber eraser (c) a paper towel (d) a plastic ruler
8. 8.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a balloon (c) a glass of water (d) a white flower
9. 9.⚖️ 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 length of the stem (c) the kind of flower (d) the room it stands in
10. 10.⚖️ 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 water (b) the amount of colour (c) time for colour to show (d) the kind of flower
11. 11.🧺 Do we need yeast for the coloured flower experiment? (a) needed (b) not needed
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) False (b) True
13. 13.⚖️ 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
14. 14.💧 Which of these lets water climb up it? (a) a rubber eraser (b) a cotton thread (c) a steel spoon (d) a glass marble
15. 15.🧺 Do we need a battery cell for the coloured flower experiment? (a) needed (b) not needed
16. 16.True or false: a piece of chalk does not let water climb. (a) True (b) False
17. 17.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a magnet (c) a few hours of waiting (d) food colour
18. 18.True or false: a balloon is not needed for the coloured flower experiment. (a) False (b) True
19. 19.True or false: a mirror is needed for the coloured flower experiment. (a) True (b) False
20. 20.💧 Which of these does not let water climb? (a) a flower stem (b) a sugar cube (c) a plastic ruler (d) a strip of cloth
21. 21.True or false: a glass of water is not needed for the coloured flower experiment. (a) True (b) False
22. 22.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
23. 23.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
24. 24.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
25. 25.⚖️ 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) False (b) True
26. 26.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
27. 27.⚖️ 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
28. 28.💧 Which of these does not let water climb? (a) a sugar cube (b) a piece of foil (c) a paper towel (d) a flower stem
29. 29.🛟 What should you do after handling food colour? (a) rub your eyes (b) wipe them on walls (c) wash your hands (d) lick your fingers
30. 30.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
31. 31.📘 What is it called when water climbs up thin tubes or paper by itself? (a) magnetism (b) evaporation (c) capillary action (d) melting
32. 32.⚖️ 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) False (b) True
33. 33.💧 Dip a steel spoon into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a glass of water (c) a balloon (d) a few hours of waiting
35. 35.True or false: a battery cell is not needed for the coloured flower experiment. (a) True (b) False
36. 36.🧺 Do we need turmeric powder for the coloured flower experiment? (a) not needed (b) needed
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a glass of water (d) a white flower
38. 38.🌼 How does coloured water reach the petals? (a) through tiny stem tubes (b) it is sprayed on (c) through the air (d) it rains on them
39. 39.True or false: a piece of chalk lets water climb up it. (a) False (b) True
40. 40.⚖️ 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 keep it the same (c) we change it

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