Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 436 · 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.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
2. 2.True or false: an iron nail floats on water. (a) False (b) True
3. 3.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it sinks (d) it floats higher
4. 4.🔍 Which is the odd one out? (a) a steel spoon (b) a ball of clay (c) a coin (d) an empty capped bottle
5. 5.🛟 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
6. 6.🛟 Which of these floats on water? (a) an iron nail (b) an ice-cream stick (c) a glass marble (d) a steel spoon
7. 7.True or false: a dry leaf sinks in water. (a) False (b) True
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) True (b) False
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) True (b) False
10. 10.⚖️ 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
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) an iron nail (b) a piece of thermocol (c) a ball of clay (d) a metal key
13. 13.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) lots of salt stirred in (d) a little shaking
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a towel for spills (d) a mirror
15. 15.🔍 Which is the odd one out? (a) a cork (b) a pebble (c) an ice-cream stick (d) an ice cube
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) small test objects (d) turmeric powder
18. 18.🧺 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 magnet (d) a towel for spills
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) turmeric powder (d) small test objects
20. 20.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the tub of water
22. 22.True or false: a glass marble sinks in water. (a) False (b) True
23. 23.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
24. 24.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a battery cell (c) a magnet (d) turmeric powder
26. 26.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a mirror (d) yeast
28. 28.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
29. 29.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it dissolves (d) it can float
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) yeast (d) small test objects
32. 32.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
33. 33.⚖️ 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 amount of clay (b) the shape of the clay (c) the tub of water (d) whether it floats
34. 34.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
35. 35.🧺 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 balloon (d) a tub of water
36. 36.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of thermocol (c) an ice-cream stick (d) an ice cube
37. 37.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
38. 38.🔍 Which is the odd one out? (a) a feather (b) a steel spoon (c) a coin (d) a metal key
39. 39.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
40. 40.🛟 Which of these sinks in water? (a) a cork (b) a piece of thermocol (c) an empty capped bottle (d) a pebble

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