Floating and Sinking Experiment Worksheet

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

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