Floating and Sinking Experiment Worksheet

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

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