Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 800 · 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.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
2. 2.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) small test objects (d) a results table
3. 3.🛟 Which of these floats on water? (a) an ice-cream stick (b) a coin (c) a ball of clay (d) a pebble
4. 4.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
5. 5.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice cube (c) a feather (d) a metal key
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) yeast
7. 7.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
8. 8.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) leave water on the floor (d) run around the tub
11. 11.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
12. 12.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
13. 13.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a towel for spills (d) small test objects
14. 14.⚖️ 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 keep it the same (c) we measure it
15. 15.🔍 Which is the odd one out? (a) a ball of clay (b) a ping-pong ball (c) a coin (d) a pebble
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
17. 17.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
19. 19.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
20. 20.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
21. 21.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
22. 22.True or false: a glass marble floats on water. (a) True (b) False
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) yeast (c) a balloon (d) a results table
24. 24.⚖️ 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 measure it (c) we change it
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) a balloon (d) a tub of water
26. 26.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice cube (c) a coin (d) a cork
27. 27.True or false: a pebble floats on water. (a) False (b) True
28. 28.🛟 Which of these floats on water? (a) a ball of clay (b) a coin (c) a pebble (d) a cork
29. 29.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
30. 30.⚖️ 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 measure it (b) we keep it the same (c) we change it
31. 31.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
32. 32.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it dissolves (d) it floats
33. 33.True or false: a piece of thermocol sinks in water. (a) True (b) False
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a pebble (d) an ice cube
36. 36.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
37. 37.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it can float (d) it turns to stone
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) small test objects (c) a towel for spills (d) a tub of water
39. 39.🔍 Which is the odd one out? (a) a ball of clay (b) a steel spoon (c) a glass marble (d) a piece of thermocol
40. 40.True or false: a dry leaf floats on water. (a) True (b) False

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