Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 143 · 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.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) a few ice cubes (d) lots of salt stirred in
3. 3.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) water is sticky (d) ice is less dense
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
6. 6.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a towel for spills (d) a tub of water
9. 9.True or false: a feather floats on water. (a) False (b) True
10. 10.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an iron nail (c) a dry leaf (d) an ice cube
11. 11.⚖️ 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
12. 12.🧺 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 magnet (d) a tub of water
13. 13.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
14. 14.🛟 Which of these sinks in water? (a) a glass marble (b) an empty capped bottle (c) a ping-pong ball (d) a cork
15. 15.True or false: a metal key sinks in water. (a) True (b) False
16. 16.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) the small pebble (d) both of them
17. 17.🔍 Which is the odd one out? (a) an iron nail (b) a coin (c) a glass marble (d) a cork
18. 18.🛟 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
19. 19.⚖️ 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
20. 20.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
21. 21.🛟 Which of these floats on water? (a) a coin (b) an ice cube (c) a steel spoon (d) an iron nail
22. 22.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
23. 23.True or false: an ice cube floats on water. (a) False (b) True
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a towel for spills (d) a magnet
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) turmeric powder (d) a battery cell
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a mirror (c) a balloon (d) a towel for spills
27. 27.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
28. 28.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it dissolves (d) it sinks
29. 29.🔍 Which is the odd one out? (a) a metal key (b) a pebble (c) a piece of thermocol (d) a coin
30. 30.True or false: a ping-pong ball floats on water. (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) whether it floats (b) the shape of the clay (c) the tub of water (d) the amount of clay
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) yeast (d) small test objects
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a tub of water (c) a results table (d) small test objects
34. 34.⚖️ 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
35. 35.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) small test objects (d) a results table
37. 37.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it turns white (d) it still floats
38. 38.⚖️ 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 keep it the same (c) we change it
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a results table (d) a mirror
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 sinks faster (c) it can float (d) it dissolves

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