Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 281 · 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 length of the stem (b) time for colour to show (c) the amount of water
2. 2.🧺 Which of these is needed for the coloured flower experiment? (a) a balloon (b) a white flower (c) a mirror (d) a battery cell
3. 3.⚖️ 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 kind of flower (b) the length of the stem (c) the room it stands in (d) the amount of colour
4. 4.🔍 Which is the odd one out? (a) a paper towel (b) a sugar cube (c) a flower stem (d) a plastic ruler
5. 5.💧 Which of these lets water climb up it? (a) a steel spoon (b) a paper towel (c) a plastic ruler (d) a glass marble
6. 6.🔍 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
7. 7.🔮 Predict: a strip of paper towel dips into coloured water. What happens? (a) it sinks at once (b) nothing ever happens (c) it turns to plastic (d) colour climbs up it
8. 8.⚖️ 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
9. 9.🌼 How does coloured water reach the petals? (a) through the air (b) through tiny stem tubes (c) it rains on them (d) it is sprayed on
10. 10.⚖️ 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
11. 11.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a few hours of waiting (c) a white flower (d) a mirror
12. 12.🧺 Which of these is needed for the coloured flower experiment? (a) a battery cell (b) food colour (c) a mirror (d) turmeric powder
13. 13.💧 Which of these lets water climb up it? (a) a cotton thread (b) a piece of foil (c) a rubber eraser (d) a plastic ruler
14. 14.🔍 Which is the odd one out? (a) a paper towel (b) a strip of cloth (c) a cotton thread (d) a steel spoon
15. 15.💧 Which of these lets water climb up it? (a) a steel spoon (b) a glass marble (c) a rubber eraser (d) a piece of chalk
16. 16.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a white flower (b) a magnet (c) a glass of water (d) a few hours of waiting
17. 17.True or false: a cotton thread does not let water climb. (a) True (b) False
18. 18.🔮 Predict: a stem is split in two, one half in red water and one in blue. What do the petals do? (a) they all turn green (b) they turn two colours (c) they fall off at once (d) they stay white
19. 19.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) a white flower (c) a battery cell (d) food colour
20. 20.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
21. 21.🧺 Which of these is not needed for the coloured flower experiment? (a) a mirror (b) a white flower (c) a glass of water (d) food colour
22. 22.🔍 Which is the odd one out? (a) a steel spoon (b) a sugar cube (c) a rubber eraser (d) a glass marble
23. 23.True or false: a strip of cloth does not let water climb. (a) True (b) False
24. 24.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) yeast
25. 25.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
26. 26.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
27. 27.True or false: a sugar cube does not let water climb. (a) False (b) True
28. 28.True or false: a magnet is not needed for the coloured flower experiment. (a) False (b) True
29. 29.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a few hours of waiting (c) food colour (d) a battery cell
30. 30.True or false: a mirror is needed for the coloured flower experiment. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a glass marble (b) a rubber eraser (c) a flower stem (d) a piece of foil
32. 32.💧 Dip a strip of cloth into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
33. 33.🧺 Which of these is not needed for the coloured flower experiment? (a) a glass of water (b) a magnet (c) a white flower (d) food colour
34. 34.🛟 Who should trim the flower stem? (a) anyone, without looking (b) a pet (c) a grown-up (d) a toddler
35. 35.⚖️ 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 room it stands in (b) the kind of flower (c) time for colour to show (d) the length of the stem
36. 36.True or false: food colour is not needed for the coloured flower experiment. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) a few hours of waiting (d) turmeric powder
40. 40.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed

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