Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 778 · 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.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
2. 2.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
3. 3.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a feather (c) a piece of thermocol (d) a coin
4. 4.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
6. 6.True or false: a ping-pong ball floats on water. (a) True (b) False
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) False (b) True
8. 8.True or false: an ice cube sinks in water. (a) True (b) False
9. 9.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
10. 10.True or false: an ice-cream stick floats on water. (a) False (b) True
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
12. 12.True or false: an empty capped bottle sinks in water. (a) True (b) False
13. 13.⚖️ 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
14. 14.⚖️ 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) the shape of the clay (c) the kind of clay (d) whether it floats
15. 15.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
17. 17.🔍 Which is the odd one out? (a) a ping-pong ball (b) a feather (c) a coin (d) an empty capped bottle
18. 18.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
19. 19.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) its hollow shape (c) it has a magnet (d) sea water is warm
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a tub of water
21. 21.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a balloon (d) a towel for spills
22. 22.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
23. 23.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it turns white (d) it still floats
24. 24.⚖️ 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 keep it the same (c) we measure it
25. 25.True or false: a steel spoon sinks in water. (a) False (b) True
26. 26.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
27. 27.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is less dense (d) ice is very cold
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a towel for spills (d) a magnet
29. 29.🔍 Which is the odd one out? (a) a ball of clay (b) a metal key (c) an iron nail (d) an ice-cream stick
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a battery cell (d) a results table
33. 33.🛟 Which of these sinks in water? (a) an iron nail (b) an ice cube (c) a ping-pong ball (d) a cork
34. 34.🛟 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) wipe up spills at once (d) run around the tub
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) small test objects (d) a battery cell
36. 36.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a few ice cubes (d) a little shaking
37. 37.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a ping-pong ball (d) a steel spoon
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a mirror (d) small test objects
39. 39.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
40. 40.⚖️ 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 amount of clay (c) the tub of water (d) the shape of the clay

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