Capillary Action Flower Experiment Worksheet

Science experiments lesson 4: Colour-changing flower: capillary action · Set 119 · 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 length of the stem is the one thing we change. (a) True (b) False
2. 2.🛟 Who should trim the flower stem? (a) a toddler (b) anyone, without looking (c) a pet (d) a grown-up
3. 3.🔍 Which is the odd one out? (a) a cotton thread (b) a glass marble (c) a paper towel (d) a piece of chalk
4. 4.🔍 Which is the odd one out? (a) a paper towel (b) a cotton thread (c) a piece of chalk (d) a piece of foil
5. 5.⚖️ 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) True (b) False
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a paper towel (c) a steel spoon (d) a plastic ruler
7. 7.⚖️ 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 kept the same. (a) False (b) True
8. 8.📘 What is it called when water climbs up thin tubes or paper by itself? (a) evaporation (b) magnetism (c) capillary action (d) melting
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 kind of flower (b) the length of the stem (c) the room it stands in (d) time for colour to show
10. 10.🧺 Do we need food colour for the coloured flower experiment? (a) needed (b) not needed
11. 11.🔮 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 all turn green (c) they turn two colours (d) they stay white
12. 12.🌼 How does coloured water reach the petals? (a) it rains on them (b) through tiny stem tubes (c) through the air (d) it is sprayed on
13. 13.💧 Dip a flower stem into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
14. 14.🔍 Which is the odd one out? (a) a steel spoon (b) a flower stem (c) a piece of chalk (d) a cotton thread
15. 15.🧺 Do we need a magnet for the coloured flower experiment? (a) not needed (b) needed
16. 16.💧 Dip a plastic ruler into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
17. 17.🧺 Which of these is needed for the coloured flower experiment? (a) a magnet (b) a mirror (c) food colour (d) yeast
18. 18.⚖️ 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) True (b) False
19. 19.🧺 Which of these is needed for the coloured flower experiment? (a) a white flower (b) a battery cell (c) a balloon (d) a mirror
20. 20.🛟 What should you do after handling food colour? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) wipe them on walls
21. 21.🧺 Which of these is needed for the coloured flower experiment? (a) yeast (b) a magnet (c) a glass of water (d) turmeric powder
22. 22.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) food colour (b) a white flower (c) yeast (d) a few hours of waiting
23. 23.⚖️ 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 measure it (b) we change it (c) we keep it the same
24. 24.True or false: a steel spoon lets water climb up it. (a) False (b) True
25. 25.💧 Dip a piece of chalk into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
26. 26.True or false: a piece of chalk lets water climb up it. (a) True (b) False
27. 27.True or false: a plastic ruler 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) a balloon (b) a white flower (c) a glass of water (d) food colour
29. 29.🧺 Do we need a white flower for the coloured flower experiment? (a) needed (b) not needed
30. 30.True or false: food colour is needed for the coloured flower experiment. (a) True (b) False
31. 31.🧺 Three of these are needed for the coloured flower experiment. Which one is NOT needed? (a) a few hours of waiting (b) food colour (c) turmeric powder (d) a white flower
32. 32.True or false: a plastic ruler 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) time for colour to show (b) the length of the stem (c) the amount of colour
34. 34.🔍 What do you see a day after a white flower stands in blue water? (a) the petals turn bluish (b) the flower floats away (c) the stem turns to ice (d) the water turns green
35. 35.💧 Which of these does not let water climb? (a) a paper towel (b) a plastic ruler (c) a strip of cloth (d) a cotton thread
36. 36.⚖️ 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 room it stands in (c) the amount of colour (d) time for colour to show
37. 37.⚖️ 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) False (b) True
38. 38.💧 Dip a glass marble into coloured water. Does the water climb up it? (a) water climbs up it (b) water does not climb
39. 39.True or false: a strip of cloth does not let water climb. (a) True (b) False
40. 40.💧 Which of these does not let water climb? (a) a cotton thread (b) a rubber eraser (c) a paper towel (d) a strip of cloth

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