Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 760 · 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.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) a cork (d) an iron nail
2. 2.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
3. 3.⚖️ 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 keep it the same (b) we measure it (c) we change it
4. 4.🧺 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) a battery cell (d) small test objects
5. 5.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it dissolves (d) it sinks
6. 6.🛟 Which of these sinks in water? (a) an ice cube (b) an ice-cream stick (c) a pebble (d) a piece of thermocol
7. 7.⚖️ 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 keep it the same (b) we change it (c) we measure it
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) yeast (d) a magnet
9. 9.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a little shaking (d) a few ice cubes
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
11. 11.True or false: a ball of clay sinks in water. (a) True (b) False
12. 12.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
13. 13.🧺 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 balloon (d) a tub of water
14. 14.🛟 Which of these floats on water? (a) a pebble (b) a metal key (c) an ice cube (d) a steel spoon
15. 15.🔍 Which is the odd one out? (a) a metal key (b) a steel spoon (c) a dry leaf (d) a coin
16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a towel for spills (d) a tub of water
17. 17.🛟 Which of these sinks in water? (a) an ice cube (b) a cork (c) a glass marble (d) a piece of thermocol
18. 18.🛟 Which of these floats on water? (a) a steel spoon (b) an iron nail (c) a glass marble (d) an empty capped bottle
19. 19.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to keep children safe (d) to hide the corks
20. 20.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
21. 21.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a magnet (c) small test objects (d) a tub of water
22. 22.⚖️ 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 shape of the clay (c) the kind of clay (d) the tub of water
23. 23.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) small test objects (d) a balloon
24. 24.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
25. 25.True or false: a metal key sinks in water. (a) False (b) True
26. 26.True or false: an iron nail floats on water. (a) False (b) True
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) yeast (d) a results table
28. 28.⚖️ 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 change it (b) we measure it (c) we keep it the same
29. 29.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
30. 30.🛟 Which of these floats on water? (a) a coin (b) an iron nail (c) a steel spoon (d) an ice-cream stick
31. 31.True or false: an ice-cream stick floats on water. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) an empty capped bottle (b) a ball of clay (c) a dry leaf (d) an ice-cream stick
35. 35.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
36. 36.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) a pebble (d) an ice-cream stick
37. 37.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the water (d) the cork itself
38. 38.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
39. 39.🛟 Which of these sinks in water? (a) a steel spoon (b) an ice-cream stick (c) a dry leaf (d) a ping-pong ball
40. 40.🛟 Does a metal key float or sink in water? (a) floats (b) sinks

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