Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 53 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) a battery cell
2. 2.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a few ice cubes (d) a little shaking
3. 3.⚖️ 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
4. 4.🔍 Which is the odd one out? (a) a piece of thermocol (b) a steel spoon (c) an ice-cream stick (d) an ice cube
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a balloon (d) a tub of water
6. 6.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
7. 7.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
8. 8.⚖️ 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) whether it floats (c) the shape of the clay (d) the tub of water
9. 9.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
10. 10.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
11. 11.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
12. 12.True or false: an ice cube sinks in water. (a) False (b) True
13. 13.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) a metal key (d) a ping-pong ball
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) yeast (d) a towel for spills
15. 15.🛟 Which of these floats on water? (a) a ball of clay (b) an iron nail (c) a pebble (d) a piece of thermocol
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a results table (d) a towel for spills
17. 17.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a battery cell (c) a balloon (d) turmeric powder
18. 18.True or false: a ball of clay sinks in water. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) an ice cube (b) a glass marble (c) a piece of thermocol (d) a ping-pong ball
20. 20.🛟 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
21. 21.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a mirror (d) a balloon
23. 23.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
24. 24.🛟 Which of these sinks in water? (a) a dry leaf (b) a steel spoon (c) an empty capped bottle (d) an ice-cream stick
25. 25.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it melts (d) it turns blue
26. 26.🛟 Does a coin float or sink in water? (a) sinks (b) floats
27. 27.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is magnetic (d) ice is less dense
28. 28.⚖️ 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) whether it floats (c) the tub of water (d) the shape of the clay
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) False (b) True
30. 30.True or false: a pebble sinks in water. (a) False (b) True
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) small test objects (d) a battery cell
32. 32.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
33. 33.True or false: a cork floats on water. (a) False (b) True
34. 34.True or false: a cork sinks in water. (a) True (b) False
35. 35.🔮 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 can float (d) it dissolves
36. 36.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
37. 37.True or false: an empty capped bottle floats on water. (a) True (b) False
38. 38.🧺 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) yeast
39. 39.⚖️ 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 keep it the same (c) we measure it
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a towel for spills (d) small test objects

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