Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 417 · 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 paper towel does not let water climb. (a) True (b) False
2. 2.🧺 Do we need turmeric powder for the coloured flower experiment? (a) needed (b) not needed
3. 3.True or false: food colour is needed for the coloured flower experiment. (a) False (b) True
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) yeast (b) food colour (c) a few hours of waiting (d) a glass of water
5. 5.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a magnet (b) a white flower (c) a few hours of waiting (d) food colour
7. 7.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a cotton thread (d) a rubber eraser
8. 8.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) a few hours of waiting (c) a battery cell (d) food colour
9. 9.🧺 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 mirror (d) a white flower
10. 10.🔮 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 stay white (d) they all turn green
11. 11.🧺 Which of these is needed for the coloured flower experiment? (a) a mirror (b) a glass of water (c) a battery cell (d) a magnet
12. 12.🌼 How does coloured water reach the petals? (a) it is sprayed on (b) through tiny stem tubes (c) it rains on them (d) through the air
13. 13.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) capillary action (c) evaporation (d) magnetism
14. 14.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a flower stem (d) a glass marble
15. 15.💧 Which of these does not let water climb? (a) a rubber eraser (b) a sugar cube (c) a cotton thread (d) a paper towel
16. 16.⚖️ 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) False (b) True
17. 17.⚖️ 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 the one thing we change. (a) True (b) False
18. 18.🧺 Which of these is not needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a few hours of waiting (d) a glass of water
19. 19.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a piece of chalk (d) a steel spoon
20. 20.True or false: a sugar cube does not let water climb. (a) True (b) False
21. 21.🛟 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
22. 22.🛟 Who should trim the flower stem? (a) a toddler (b) a grown-up (c) a pet (d) anyone, without looking
23. 23.True or false: a cotton thread lets water climb up it. (a) False (b) True
24. 24.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) yeast (c) turmeric powder (d) a white flower
25. 25.True or false: a strip of cloth does not let water climb. (a) True (b) False
26. 26.⚖️ 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
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 change it (b) we measure it (c) we keep it the same
28. 28.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) food colour (d) a few hours of waiting
29. 29.True or false: a battery cell is needed for the coloured flower experiment. (a) True (b) False
30. 30.💧 Which of these lets water climb up it? (a) a glass marble (b) a flower stem (c) a plastic ruler (d) a rubber eraser
31. 31.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
32. 32.⚖️ 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 length of the stem (b) the kind of flower (c) time for colour to show (d) the room it stands in
33. 33.💧 Dip a paper towel into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
34. 34.🔍 Which is the odd one out? (a) a plastic ruler (b) a rubber eraser (c) a steel spoon (d) a paper towel
35. 35.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) food colour (c) a glass of water (d) a magnet
36. 36.⚖️ 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 measure it (b) we keep it the same (c) we change it
37. 37.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) food colour (c) a white flower (d) a balloon
38. 38.True or false: a paper towel lets water climb up it. (a) True (b) False
39. 39.🧺 Which of these is needed for the coloured flower experiment? (a) a few hours of waiting (b) a mirror (c) a battery cell (d) turmeric powder
40. 40.🔍 What do you see a day after a white flower stands in blue water? (a) the flower floats away (b) the stem turns to ice (c) the petals turn bluish (d) the water turns green

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