Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 706 · 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 odd one out? (a) a coin (b) a pebble (c) a ping-pong ball (d) a metal key
2. 2.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
3. 3.True or false: a piece of thermocol floats on water. (a) True (b) False
4. 4.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) steel is very light (d) it has a magnet
5. 5.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a balloon (c) a tub of water (d) small test objects
7. 7.⚖️ 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 amount of clay (b) the tub of water (c) the shape of the clay (d) the kind of clay
8. 8.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
10. 10.🔍 Which is the odd one out? (a) an empty capped bottle (b) a ball of clay (c) a feather (d) a piece of thermocol
11. 11.⚖️ 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) True (b) False
12. 12.🛟 Does a coin float or sink in water? (a) sinks (b) floats
13. 13.⚖️ 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 measure it (b) we change it (c) we keep it the same
14. 14.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice-cream stick (c) an iron nail (d) an empty capped bottle
15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) small test objects (c) a towel for spills (d) a tub of water
17. 17.⚖️ 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 keep it the same (c) we change it
18. 18.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
19. 19.🔮 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
20. 20.🛟 Which of these sinks in water? (a) a ball of clay (b) a dry leaf (c) an empty capped bottle (d) an ice cube
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
22. 22.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
23. 23.⚖️ 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
24. 24.⚖️ 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
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a balloon (d) a results table
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the tub of water (c) whether it floats
27. 27.True or false: an iron nail sinks in water. (a) True (b) False
28. 28.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
29. 29.🔍 Which is the odd one out? (a) a metal key (b) a ping-pong ball (c) a cork (d) a piece of thermocol
30. 30.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
31. 31.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
32. 32.⚖️ 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
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) True (b) False
34. 34.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) water is sticky (d) ice is magnetic
35. 35.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
36. 36.🛟 Which of these floats on water? (a) a ball of clay (b) a coin (c) an iron nail (d) a cork
37. 37.🛟 Which of these sinks in water? (a) a feather (b) a pebble (c) an ice-cream stick (d) a piece of thermocol
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a results table (c) a towel for spills (d) a tub of water
39. 39.🔍 Which is the odd one out? (a) a metal key (b) a coin (c) a glass marble (d) an ice-cream stick
40. 40.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks

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