Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 507 · 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 steel spoon (b) an ice cube (c) a metal key (d) an iron nail
2. 2.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) ice is less dense (d) water is sticky
3. 3.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
5. 5.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
6. 6.⚖️ 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) False (b) True
7. 7.⚖️ 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
8. 8.🧺 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 results table (d) a tub of water
9. 9.True or false: a dry leaf floats on water. (a) False (b) True
10. 10.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
11. 11.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a magnet (d) a battery cell
13. 13.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a mirror (d) turmeric powder
15. 15.True or false: a ball of clay sinks in water. (a) True (b) False
16. 16.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
17. 17.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) turmeric powder (d) a results table
18. 18.True or false: a ball of clay floats on water. (a) False (b) True
19. 19.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
20. 20.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
21. 21.⚖️ 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) the amount of clay (c) the tub of water (d) whether it floats
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) small test objects (d) a magnet
23. 23.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
24. 24.⚖️ 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
25. 25.⚖️ 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 kind of clay (c) the shape of the clay
26. 26.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a feather (b) an empty capped bottle (c) a coin (d) a cork
28. 28.🛟 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
29. 29.🛟 Does a cork float or sink in water? (a) floats (b) sinks
30. 30.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
31. 31.🚢 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
32. 32.True or false: a metal key floats on water. (a) True (b) False
33. 33.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
34. 34.⚖️ 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 change it (b) we measure it (c) we keep it the same
35. 35.🛟 Does a feather float or sink in water? (a) floats (b) sinks
36. 36.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
37. 37.🛟 Which of these floats on water? (a) a ball of clay (b) a pebble (c) a glass marble (d) a piece of thermocol
38. 38.⚖️ 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
39. 39.🔍 Which is the odd one out? (a) a pebble (b) a ball of clay (c) a coin (d) a cork
40. 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it floats higher (d) it turns blue

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