Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 326 · 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.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) more plain water (d) lots of salt stirred in
3. 3.True or false: a pebble sinks in water. (a) False (b) True
4. 4.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
5. 5.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
6. 6.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
7. 7.⚖️ 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) False (b) True
8. 8.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a steel spoon (d) a cork
9. 9.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it bounces up (d) it sinks
10. 10.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
11. 11.True or false: an iron nail sinks in water. (a) False (b) True
12. 12.🛟 Does a cork float or sink in water? (a) sinks (b) floats
13. 13.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
14. 14.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
15. 15.⚖️ 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
16. 16.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) yeast (c) a balloon (d) a magnet
17. 17.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
18. 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a towel for spills (c) a results table (d) small test objects
19. 19.⚖️ 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 keep it the same (c) we measure it
20. 20.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) a glass marble (d) a steel spoon
21. 21.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a magnet (d) yeast
23. 23.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
24. 24.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
25. 25.⚖️ 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 change it (b) we keep it the same (c) we measure it
26. 26.🧺 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) small test objects
27. 27.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a balloon
29. 29.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
30. 30.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
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 kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
32. 32.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
33. 33.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) small test objects (d) yeast
34. 34.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice-cream stick (c) a ball of clay (d) a piece of thermocol
35. 35.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
36. 36.True or false: a steel spoon floats on water. (a) True (b) False
37. 37.⚖️ 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
38. 38.⚖️ 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 kind of clay (d) the shape of the clay
39. 39.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same

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