Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 374 · 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.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is less dense (c) water is sticky (d) ice is very cold
2. 2.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
3. 3.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
4. 4.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.🔍 Which is the odd one out? (a) a piece of thermocol (b) a coin (c) an ice cube (d) a dry leaf
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
8. 8.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
9. 9.⚖️ 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 kind of clay (b) the shape of the clay (c) whether it floats (d) the amount of clay
10. 10.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a results table (c) a tub of water (d) a towel for spills
12. 12.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
13. 13.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
14. 14.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) whether it floats (c) the shape of the clay
16. 16.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it dissolves (d) it turns to stone
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.True or false: a feather floats on water. (a) False (b) True
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) small test objects (d) a results table
20. 20.True or false: a ping-pong ball sinks in water. (a) True (b) False
21. 21.🔍 Which is the odd one out? (a) an iron nail (b) a feather (c) a piece of thermocol (d) an ice cube
22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) a magnet
23. 23.True or false: a glass marble sinks in water. (a) False (b) True
24. 24.🛟 Does a cork float or sink in water? (a) sinks (b) floats
25. 25.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
26. 26.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it sinks (d) it dissolves
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) yeast
28. 28.🛟 Which of these floats on water? (a) a coin (b) a steel spoon (c) a pebble (d) a piece of thermocol
29. 29.🛟 Does a coin float or sink in water? (a) sinks (b) floats
30. 30.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
31. 31.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) its hollow shape (c) sea water is warm (d) it has a magnet
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
34. 34.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it still floats (d) it sinks
35. 35.⚖️ 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) False (b) True
36. 36.⚖️ 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
37. 37.⚖️ 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 keep it the same (b) we measure it (c) we change it
38. 38.🛟 Does a feather float or sink in water? (a) floats (b) sinks
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) small test objects (d) a battery cell
40. 40.🔍 Which is the odd one out? (a) an iron nail (b) an ice-cream stick (c) a pebble (d) a coin

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