Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 70 · 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 of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) yeast (d) a results table
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) lots of salt stirred in (d) more plain water
3. 3.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
4. 4.🧺 Do we need a towel for spills 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 keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
6. 6.🚢 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
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) small test objects (c) a results table (d) a tub of water
8. 8.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
9. 9.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a towel for spills (d) a tub of water
10. 10.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
11. 11.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
12. 12.🛟 Which of these floats on water? (a) a glass marble (b) a coin (c) a metal key (d) an ice cube
13. 13.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
14. 14.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) a ping-pong ball (d) an iron nail
15. 15.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it sinks (d) it turns blue
16. 16.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the cork itself (d) the water
17. 17.⚖️ 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) whether it floats (c) the kind of clay (d) the amount of clay
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a mirror (c) a battery cell (d) yeast
20. 20.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
21. 21.⚖️ 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 keep it the same (c) we measure it
22. 22.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
23. 23.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) a cork (b) a metal key (c) a steel spoon (d) a coin
25. 25.True or false: a metal key floats on water. (a) True (b) False
26. 26.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
27. 27.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
28. 28.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
29. 29.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) play near a deep pond (d) run around the tub
30. 30.⚖️ 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
31. 31.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
32. 32.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) water is sticky (d) ice is less dense
33. 33.🛟 Which of these sinks in water? (a) an iron nail (b) a cork (c) a ping-pong ball (d) a piece of thermocol
34. 34.True or false: a pebble sinks in water. (a) False (b) True
35. 35.⚖️ 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 change it (b) we measure it (c) we keep it the same
36. 36.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) turmeric powder (c) a mirror (d) a magnet
37. 37.🛟 Which of these floats on water? (a) a coin (b) an iron nail (c) a ball of clay (d) a piece of thermocol
38. 38.⚖️ 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
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a battery cell (c) a tub of water (d) small test objects
40. 40.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed

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