Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 625 · 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 piece of thermocol (b) an empty capped bottle (c) an ice-cream stick (d) an iron nail
2. 2.⚖️ 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 shape of the clay (b) whether it floats (c) the amount of clay (d) the tub of water
3. 3.🔮 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
4. 4.🔮 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 sinks faster (d) it turns to stone
5. 5.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a mirror (d) a magnet
7. 7.🧊 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
8. 8.True or false: a ball of clay sinks in water. (a) True (b) False
9. 9.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
10. 10.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it bounces up (d) it sinks
11. 11.🛟 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) run around the tub (d) wipe up spills at once
12. 12.⚖️ 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
13. 13.🛟 Does a cork float or sink in water? (a) floats (b) sinks
14. 14.True or false: an ice-cream stick sinks in water. (a) True (b) False
15. 15.True or false: a feather floats on water. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) a cork (b) an ice cube (c) a ball of clay (d) a piece of thermocol
17. 17.🛟 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
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the shape of the clay (c) the amount of clay (d) the kind of clay
19. 19.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) an ice-cream stick (c) an empty capped bottle (d) a piece of thermocol
21. 21.🛟 Which of these sinks in water? (a) a feather (b) a steel spoon (c) an ice cube (d) a cork
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a battery cell (c) yeast (d) a tub of water
23. 23.🔍 Which is the odd one out? (a) a steel spoon (b) a metal key (c) an ice cube (d) a pebble
24. 24.True or false: a glass marble sinks in water. (a) True (b) False
25. 25.⚖️ 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 change it (c) we keep it the same
26. 26.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the cork itself (d) the water
27. 27.🔍 Which is the odd one out? (a) a metal key (b) a coin (c) a glass marble (d) a dry leaf
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
30. 30.🧺 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) a balloon
31. 31.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
32. 32.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a balloon (d) small test objects
34. 34.🔍 Which is the odd one out? (a) a glass marble (b) a feather (c) an ice-cream stick (d) a piece of thermocol
35. 35.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
36. 36.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
37. 37.True or false: a cork floats on water. (a) False (b) True
38. 38.⚖️ 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) False (b) True
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a tub of water (c) a results table (d) small test objects
40. 40.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False

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