Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 101 · 40 questions

What you do (Float or sink?): 1. Fill a tub with water on a towel, with an adult nearby. 2. Guess “float” or “sink” for each object and write it in a table. 3. Gently place each object on the water and write what happens. 4. Press the sinking clay into a boat shape and try again; wipe up spills.

1. 1.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
2. 2.True or false: a ping-pong ball sinks in water. (a) True (b) False
3. 3.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a magnet (d) a tub of water
5. 5.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
6. 6.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
7. 7.True or false: a steel spoon sinks in water. (a) False (b) True
8. 8.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) yeast (d) a results table
10. 10.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) yeast (c) turmeric powder (d) a tub of water
13. 13.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a results table (d) turmeric powder
16. 16.🛟 Does a feather float or sink in water? (a) sinks (b) floats
17. 17.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
18. 18.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
19. 19.🛟 Which of these floats on water? (a) a ball of clay (b) a steel spoon (c) a metal key (d) an empty capped bottle
20. 20.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) a results table (d) a towel for spills
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
22. 22.True or false: a piece of thermocol floats on water. (a) True (b) False
23. 23.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
24. 24.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it dissolves (d) it turns white
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) a mirror
26. 26.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the amount of clay (d) the shape of the clay
29. 29.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a glass marble (c) a piece of thermocol (d) an ice cube
30. 30.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is very cold (d) ice is less dense
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
32. 32.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
33. 33.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
34. 34.True or false: an empty capped bottle floats on water. (a) True (b) False
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
36. 36.🛟 Which of these floats on water? (a) an ice-cream stick (b) a steel spoon (c) a coin (d) a metal key
37. 37.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
38. 38.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
39. 39.True or false: a dry leaf sinks in water. (a) False (b) True
40. 40.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float

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