Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 251 · 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 of these sinks in water? (a) an ice-cream stick (b) a glass marble (c) a cork (d) an empty capped bottle
2. 2.⚖️ 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 measure it (c) we change it
3. 3.True or false: an ice cube sinks in water. (a) False (b) True
4. 4.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
5. 5.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) run around the tub (d) wipe up spills at once
6. 6.🛟 Does an ice-cream stick 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) False (b) True
8. 8.⚖️ 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) True (b) False
9. 9.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) ice is magnetic (d) water is sticky
10. 10.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it dissolves (d) it turns white
11. 11.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a mirror (c) turmeric powder (d) a magnet
12. 12.⚖️ 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
13. 13.🛟 Which of these floats on water? (a) a ball of clay (b) a steel spoon (c) a metal key (d) a piece of thermocol
14. 14.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
15. 15.🚢 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
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) small test objects (d) a battery cell
17. 17.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the small pebble (d) the big log
18. 18.⚖️ 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 measure it (c) we keep it the same
19. 19.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
20. 20.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it can float (d) it sinks faster
21. 21.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
22. 22.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) turmeric powder (d) a balloon
24. 24.🛟 Does a cork float or sink in water? (a) floats (b) sinks
25. 25.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it bounces up (d) it floats
26. 26.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) an ice cube (d) a ball of clay
27. 27.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
28. 28.True or false: a coin floats on water. (a) False (b) True
29. 29.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) a glass marble (d) a dry leaf
30. 30.True or false: a feather sinks in water. (a) False (b) True
31. 31.🔍 Which is the odd one out? (a) a cork (b) a ball of clay (c) a piece of thermocol (d) an ice cube
32. 32.🛟 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 hide the corks (d) to keep children safe
33. 33.🧺 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 magnet
34. 34.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
35. 35.True or false: an empty capped bottle sinks in water. (a) True (b) False
36. 36.True or false: a pebble sinks in water. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) a feather (b) an ice-cream stick (c) an ice cube (d) a steel spoon
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks

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