Floating and Sinking Experiment Worksheet

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

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