Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 234 · 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.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to win a prize (d) to hide the corks
3. 3.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
4. 4.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) small test objects (d) a tub of water
6. 6.🔮 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
7. 7.🔍 Which is the odd one out? (a) an iron nail (b) a pebble (c) a glass marble (d) a cork
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) turmeric powder (d) a towel for spills
9. 9.⚖️ 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
10. 10.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
11. 11.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
12. 12.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
13. 13.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a cork (c) an ice-cream stick (d) a metal key
14. 14.True or false: a piece of thermocol sinks in water. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) a piece of thermocol (b) a ball of clay (c) an ice cube (d) a ping-pong ball
16. 16.🧺 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 towel for spills (d) a magnet
17. 17.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) turmeric powder (c) a balloon (d) small test objects
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a balloon (d) a tub of water
20. 20.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
21. 21.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
22. 22.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
23. 23.🛟 Which of these floats on water? (a) a metal key (b) a coin (c) a glass marble (d) an ice-cream stick
24. 24.True or false: an empty capped bottle floats on water. (a) False (b) True
25. 25.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
26. 26.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
27. 27.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a tub of water (d) a mirror
28. 28.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
29. 29.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) small test objects (d) a results table
31. 31.True or false: a ball of clay sinks in water. (a) True (b) False
32. 32.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
35. 35.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
36. 36.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) the small pebble (d) both of them
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) True (b) False
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.⚖️ 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 change it (b) we measure it (c) we keep it the same
40. 40.⚖️ 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

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