Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 831 · 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.True or false: a glass marble floats on water. (a) True (b) False
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) yeast
3. 3.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
4. 4.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
5. 5.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the small pebble (d) the big log
6. 6.⚖️ 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
7. 7.⚖️ 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) the amount of clay (c) whether it floats
8. 8.⚖️ 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
9. 9.🛟 Does a feather float or sink in water? (a) floats (b) sinks
10. 10.True or false: a steel spoon floats on water. (a) True (b) False
11. 11.⚖️ 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
12. 12.⚖️ 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
13. 13.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
14. 14.🚢 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
15. 15.🔍 Which is the odd one out? (a) an ice-cream stick (b) a glass marble (c) a dry leaf (d) a cork
16. 16.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
17. 17.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the cork itself (d) the tub
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) yeast (c) a towel for spills (d) a magnet
19. 19.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) a results table (d) a magnet
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the shape of the clay (d) the kind of clay
22. 22.True or false: a piece of thermocol sinks in water. (a) True (b) False
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a tub of water (d) a results table
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
25. 25.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
26. 26.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) small test objects (d) turmeric powder
28. 28.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
29. 29.⚖️ 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
30. 30.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it turns blue (d) it melts
31. 31.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
32. 32.True or false: a feather floats on water. (a) True (b) False
33. 33.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
34. 34.🛟 Which of these sinks in water? (a) an ice cube (b) a feather (c) an empty capped bottle (d) an iron nail
35. 35.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a magnet (d) a tub of water
37. 37.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a towel for spills (d) small test objects
39. 39.🔍 Which is the odd one out? (a) a steel spoon (b) an ice cube (c) a pebble (d) a ball of clay
40. 40.⚖️ 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) False (b) True

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