Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 351 · 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.🔮 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
2. 2.⚖️ 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
3. 3.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it bounces up (d) it sinks
4. 4.⚖️ 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
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to keep children safe (d) to win a prize
6. 6.🔍 Which is the odd one out? (a) a glass marble (b) a pebble (c) a ping-pong ball (d) a coin
7. 7.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a magnet (d) a tub of water
9. 9.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
10. 10.True or false: a piece of thermocol floats on water. (a) True (b) False
11. 11.🛟 Which of these floats on water? (a) a cork (b) a pebble (c) a ball of clay (d) an iron nail
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the amount of clay (c) the shape of the clay
13. 13.True or false: a piece of thermocol sinks in water. (a) True (b) False
14. 14.True or false: a cork floats on water. (a) False (b) True
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) run around the tub (d) leave water on the floor
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.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
18. 18.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) water is sticky (d) ice is magnetic
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) small test objects (c) a results table (d) a towel for spills
20. 20.⚖️ 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 measure it (c) we change it
21. 21.🔍 Which is the odd one out? (a) a cork (b) a ping-pong ball (c) an ice cube (d) a coin
22. 22.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) it has a magnet (d) steel is very light
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) a battery cell
24. 24.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
25. 25.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) the big log (d) both of them
26. 26.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
27. 27.🛟 Does a coin float or sink in water? (a) floats (b) sinks
28. 28.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
29. 29.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a towel for spills (d) a mirror
31. 31.⚖️ 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) False (b) True
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) a results table (d) small test objects
33. 33.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
34. 34.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
35. 35.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) yeast (d) a mirror
36. 36.⚖️ 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
37. 37.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) small test objects (d) a tub of water
39. 39.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
40. 40.🛟 Does a metal key float or sink in water? (a) floats (b) sinks

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