Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 668 · 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? True or false: the amount of water is the one thing we change. (a) True (b) False
2. 2.⚖️ 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) time for colour to show (c) the amount of water (d) the room it stands in
3. 3.🔮 What would change if the flower stood in plain water? (a) the stem turns blue (b) no colour change (c) the flower glows (d) the petals turn red
4. 4.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a few hours of waiting (c) food colour (d) a glass of water
5. 5.📘 What is it called when water climbs up thin tubes or paper by itself? (a) melting (b) evaporation (c) magnetism (d) capillary action
6. 6.🧺 Which of these is needed for the coloured flower experiment? (a) turmeric powder (b) a white flower (c) a mirror (d) a balloon
7. 7.⚖️ 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 room it stands in (b) the length of the stem (c) the amount of water (d) the amount of colour
8. 8.🧺 Do we need food colour for the coloured flower experiment? (a) not needed (b) needed
9. 9.💧 Which of these does not let water climb? (a) a glass marble (b) a cotton thread (c) a sugar cube (d) a flower stem
10. 10.💧 Which of these lets water climb up it? (a) a piece of foil (b) a plastic ruler (c) a glass marble (d) a sugar cube
11. 11.⚖️ 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 kind of flower (b) the length of the stem (c) time for colour to show
12. 12.🔍 What do you see a day after a white flower stands in blue water? (a) the stem turns to ice (b) the water turns green (c) the petals turn bluish (d) the flower floats away
13. 13.True or false: a flower stem does not let water climb. (a) True (b) False
14. 14.True or false: yeast is needed for the coloured flower experiment. (a) True (b) False
15. 15.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) turmeric powder (c) a few hours of waiting (d) food colour
16. 16.🛟 Who should trim the flower stem? (a) a grown-up (b) a toddler (c) anyone, without looking (d) a pet
17. 17.💧 Dip a piece of foil into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is not needed for the coloured flower experiment? (a) food colour (b) a white flower (c) a glass of water (d) a balloon
20. 20.⚖️ 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
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a few hours of waiting (b) a white flower (c) a magnet (d) food colour
22. 22.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) yeast (c) a few hours of waiting (d) a mirror
23. 23.True or false: a glass of water is needed for the coloured flower experiment. (a) False (b) True
24. 24.⚖️ 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
25. 25.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
26. 26.True or false: a few hours of waiting is not needed for the coloured flower experiment. (a) False (b) True
27. 27.True or false: a rubber eraser does not let water climb. (a) True (b) False
28. 28.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) yeast (b) a glass of water (c) food colour (d) a white flower
29. 29.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) colour climbs up it (d) it turns to plastic
30. 30.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they turn two colours (b) they stay white (c) they fall off at once (d) they all turn green
31. 31.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
32. 32.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a glass of water (b) a mirror (c) a white flower (d) food colour
33. 33.⚖️ 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 measure it (b) we keep it the same (c) we change it
34. 34.True or false: a battery cell is needed for the coloured flower experiment. (a) False (b) True
35. 35.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a sugar cube (d) a strip of cloth
36. 36.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
37. 37.🔍 Which is the odd one out? (a) a piece of chalk (b) a piece of foil (c) a plastic ruler (d) a glass marble
38. 38.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it is sprayed on (d) it rains on them
40. 40.🔍 Which is the odd one out? (a) a glass marble (b) a cotton thread (c) a piece of foil (d) a plastic ruler

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