Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 551 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
2. 2.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it dissolves (d) it floats
3. 3.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
4. 4.🧺 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 tub of water
5. 5.True or false: an iron nail floats on water. (a) False (b) True
6. 6.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
7. 7.True or false: a dry leaf sinks in water. (a) False (b) True
8. 8.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) a towel for spills (d) a balloon
10. 10.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
11. 11.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
12. 12.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) its hollow shape (d) it has a magnet
13. 13.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) a ball of clay (d) a dry leaf
14. 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
15. 15.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
16. 16.🔍 Which is the odd one out? (a) an iron nail (b) an empty capped bottle (c) an ice-cream stick (d) a ping-pong ball
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the amount of clay (c) whether it floats (d) the kind of clay
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
20. 20.True or false: a dry leaf floats on water. (a) False (b) True
21. 21.True or false: a ball of clay floats on water. (a) False (b) True
22. 22.True or false: a piece of thermocol sinks in water. (a) True (b) False
23. 23.True or false: an ice-cream stick sinks in water. (a) False (b) True
24. 24.🧺 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 mirror
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a magnet (d) a tub of water
26. 26.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
28. 28.⚖️ 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 measure it (b) we keep it the same (c) we change it
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) small test objects (d) a magnet
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) an empty capped bottle (c) a coin (d) a steel spoon
31. 31.True or false: a steel spoon sinks in water. (a) False (b) True
32. 32.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to hide the corks (d) to splash everyone
33. 33.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the air above (d) the cork itself
34. 34.⚖️ 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 amount of clay (b) the shape of the clay (c) the kind of clay (d) whether it floats
35. 35.🛟 Which of these floats on water? (a) a ball of clay (b) a metal key (c) a pebble (d) a piece of thermocol
36. 36.🛟 Which of these sinks in water? (a) a feather (b) a ping-pong ball (c) a piece of thermocol (d) an iron nail
37. 37.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
38. 38.True or false: a feather floats on water. (a) False (b) True
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a results table (d) a balloon
40. 40.⚖️ 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) the shape of the clay (c) whether it floats

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