Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 60 · 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.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) the big log (c) neither of them (d) both of them
2. 2.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
3. 3.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a results table (c) a battery cell (d) a balloon
4. 4.True or false: an iron nail sinks in water. (a) True (b) False
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
6. 6.True or false: a piece of thermocol sinks in water. (a) True (b) False
7. 7.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
8. 8.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the water (d) the air above
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
10. 10.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
11. 11.⚖️ 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 shape of the clay (d) the amount of clay
12. 12.True or false: a dry leaf floats on water. (a) False (b) True
13. 13.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
14. 14.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
15. 15.🛟 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
16. 16.⚖️ 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
17. 17.⚖️ 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
18. 18.🧺 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 tub of water (d) turmeric powder
19. 19.🛟 Does a feather float or sink in water? (a) sinks (b) floats
20. 20.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
21. 21.True or false: an ice-cream stick sinks in water. (a) False (b) True
22. 22.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a coin (d) an empty capped bottle
23. 23.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) an ice-cream stick (d) a metal key
24. 24.⚖️ 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
25. 25.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
26. 26.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) an ice cube (d) a ball of clay
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a towel for spills (c) a tub of water (d) small test objects
29. 29.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) ice is magnetic (d) water is sticky
30. 30.⚖️ 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) False (b) True
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
32. 32.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice cube (c) a glass marble (d) a cork
33. 33.True or false: a feather sinks in water. (a) True (b) False
34. 34.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
35. 35.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a feather (d) a glass marble
36. 36.True or false: an ice cube sinks in water. (a) True (b) False
37. 37.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
38. 38.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it sinks (d) it bounces up
39. 39.⚖️ 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 shape of the clay (c) the tub of water (d) the kind of clay
40. 40.True or false: an empty capped bottle sinks in water. (a) False (b) True

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