Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 375 · 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: an ice cube floats on water. (a) True (b) False
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a results table (c) small test objects (d) a tub of water
3. 3.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
4. 4.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
5. 5.⚖️ 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 kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) a results table (d) small test objects
7. 7.⚖️ 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
8. 8.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
9. 9.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
10. 10.🛟 Which of these floats on water? (a) a piece of thermocol (b) an iron nail (c) a coin (d) a metal key
11. 11.True or false: a cork floats on water. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a ball of clay (b) a pebble (c) a coin (d) an empty capped bottle
13. 13.🛟 Which of these sinks in water? (a) a feather (b) an ice cube (c) a ping-pong ball (d) a pebble
14. 14.⚖️ 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
15. 15.True or false: an empty capped bottle sinks in water. (a) True (b) False
16. 16.🛟 Which of these floats on water? (a) a coin (b) a ball of clay (c) a glass marble (d) a dry leaf
17. 17.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it dissolves (d) it can float
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
20. 20.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
21. 21.⚖️ 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
22. 22.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) an ice cube (d) a glass marble
23. 23.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
25. 25.⚖️ 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 measure it (c) we keep it the same
26. 26.🔍 Which is the odd one out? (a) a cork (b) an ice-cream stick (c) a dry leaf (d) a pebble
27. 27.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a towel for spills (d) yeast
29. 29.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it dissolves (c) it sinks (d) it bounces up
30. 30.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
31. 31.🛟 Which of these floats on water? (a) a pebble (b) an ice-cream stick (c) an iron nail (d) a ball of clay
32. 32.True or false: a glass marble sinks in water. (a) True (b) False
33. 33.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a battery cell (c) a magnet (d) small test objects
34. 34.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
35. 35.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
36. 36.🛟 Does a feather float or sink in water? (a) sinks (b) floats
37. 37.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a results table (d) a balloon
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 tub of water (b) whether it floats (c) the shape of the clay
39. 39.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
40. 40.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True

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