Floating and Sinking Experiment Worksheet

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

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