Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 705 · 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 cork (b) a pebble (c) a coin (d) a ball of clay
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a results table (c) a balloon (d) turmeric powder
3. 3.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
4. 4.True or false: a cork floats on water. (a) True (b) False
5. 5.⚖️ 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
6. 6.True or false: a metal key sinks in water. (a) True (b) False
7. 7.⚖️ 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) True (b) False
8. 8.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
9. 9.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
10. 10.🔍 Which is the odd one out? (a) an ice-cream stick (b) a ball of clay (c) an ice cube (d) a feather
11. 11.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) more plain water (d) a few ice cubes
12. 12.True or false: a ping-pong ball sinks in water. (a) True (b) False
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a mirror (d) a magnet
14. 14.⚖️ 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) True (b) False
15. 15.🛟 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 win a prize (d) to splash everyone
16. 16.⚖️ 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 keep it the same (b) we measure it (c) we change it
17. 17.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) a piece of thermocol (d) a steel spoon
19. 19.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
20. 20.🧺 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) a mirror (d) small test objects
21. 21.🛟 Which of these floats on water? (a) an empty capped bottle (b) a ball of clay (c) a coin (d) an iron nail
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
23. 23.True or false: a feather floats on water. (a) True (b) False
24. 24.🛟 Which of these floats on water? (a) a glass marble (b) a ball of clay (c) an ice-cream stick (d) a steel spoon
25. 25.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a coin (d) a cork
26. 26.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a tub of water
28. 28.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
29. 29.True or false: an empty capped bottle floats on water. (a) False (b) True
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a balloon (d) a results table
31. 31.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it floats (d) it dissolves
32. 32.⚖️ 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
33. 33.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the tub (d) the cork itself
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) whether it floats (c) the kind of clay (d) the tub of water
35. 35.🔮 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
36. 36.True or false: an empty capped bottle sinks in water. (a) True (b) False
37. 37.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
38. 38.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) it has a magnet (d) its hollow shape
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a magnet (d) a results table

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