Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 343 · 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.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) lots of salt stirred in (d) more plain water
3. 3.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
4. 4.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) a balloon (d) a results table
5. 5.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) its hollow shape (c) sea water is warm (d) it has a magnet
6. 6.🛟 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
7. 7.True or false: a glass marble sinks in water. (a) True (b) False
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
9. 9.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) turmeric powder
11. 11.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
12. 12.⚖️ 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 change it (b) we measure it (c) we keep it the same
13. 13.🛟 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 hide the corks (d) to keep children safe
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the amount of clay (c) whether it floats (d) the kind of clay
15. 15.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
16. 16.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.True or false: a pebble sinks in water. (a) True (b) False
19. 19.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
20. 20.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a towel for spills (d) a battery cell
21. 21.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it melts (d) it sinks
22. 22.True or false: an ice cube floats on water. (a) False (b) True
23. 23.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a towel for spills
25. 25.🔍 Which is the odd one out? (a) a metal key (b) a ball of clay (c) a cork (d) a pebble
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it dissolves (d) it turns to stone
28. 28.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) a results table (d) a towel for spills
30. 30.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
31. 31.⚖️ 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 tub of water (b) the shape of the clay (c) the amount of clay (d) whether it floats
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
33. 33.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
34. 34.🔍 Which is the odd one out? (a) an iron nail (b) a metal key (c) a dry leaf (d) a glass marble
35. 35.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) a ball of clay (d) a dry leaf
36. 36.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
37. 37.🛟 Does a cork float or sink in water? (a) sinks (b) floats
38. 38.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
39. 39.⚖️ 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
40. 40.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks

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