Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 524 · 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.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float
2. 2.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a magnet (d) small test objects
3. 3.🧺 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) a magnet (d) a towel for spills
4. 4.⚖️ 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 measure it (c) we change it
5. 5.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
6. 6.⚖️ 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 tub of water (b) the kind of clay (c) the amount of clay (d) the shape of the clay
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the kind of clay (c) whether it floats (d) the shape of the clay
8. 8.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) an empty capped bottle (d) a steel spoon
9. 9.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) a mirror (d) turmeric powder
11. 11.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it turns white (d) it still floats
12. 12.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a pebble (d) an ice-cream stick
13. 13.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
14. 14.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
15. 15.🚢 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
16. 16.🔍 Which is the odd one out? (a) an iron nail (b) an ice-cream stick (c) a cork (d) an empty capped bottle
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) whether it floats (c) the shape of the clay
18. 18.🛟 Which of these floats on water? (a) an ice-cream stick (b) a steel spoon (c) a coin (d) a pebble
19. 19.True or false: a metal key floats on water. (a) True (b) False
20. 20.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) play near a deep pond (d) leave water on the floor
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a results table (d) a towel for spills
22. 22.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) water is sticky (d) ice is magnetic
23. 23.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
24. 24.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a mirror (d) a towel for spills
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
26. 26.🛟 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 hide the corks (d) to keep children safe
27. 27.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a towel for spills (d) a battery cell
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a towel for spills (d) a results table
29. 29.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) a steel spoon (d) an empty capped bottle
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) a battery cell (d) a tub of water
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
32. 32.True or false: a mirror 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? True or false: the tub of water is kept the same. (a) True (b) False
34. 34.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an empty capped bottle (c) a glass marble (d) an ice cube
35. 35.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
36. 36.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
37. 37.🔍 Which is the odd one out? (a) a pebble (b) a ping-pong ball (c) a piece of thermocol (d) an empty capped bottle
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the kind of clay
40. 40.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the tub (d) the air above

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