Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 66 · 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: a cork floats on water. (a) True (b) False
2. 2.⚖️ 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) False (b) True
3. 3.🔍 Which is the odd one out? (a) an empty capped bottle (b) a steel spoon (c) a pebble (d) a coin
4. 4.🧺 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) turmeric powder (d) a tub of water
5. 5.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
6. 6.🔮 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
7. 7.⚖️ 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) whether it floats (c) the shape of the clay (d) the kind of clay
8. 8.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a balloon (d) a towel for spills
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
10. 10.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
11. 11.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
12. 12.⚖️ 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) False (b) True
13. 13.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
14. 14.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
15. 15.🛟 Does a feather float or sink in water? (a) floats (b) sinks
16. 16.⚖️ 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) False (b) True
17. 17.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
18. 18.⚖️ 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
19. 19.🧊 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
20. 20.🛟 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
21. 21.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a battery cell (c) yeast (d) a balloon
22. 22.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
23. 23.⚖️ 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
24. 24.True or false: a steel spoon floats on water. (a) False (b) True
25. 25.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
26. 26.True or false: a piece of thermocol floats on water. (a) False (b) True
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) True (b) False
28. 28.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
29. 29.True or false: an ice cube sinks in water. (a) False (b) True
30. 30.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it sinks (c) it dissolves (d) it turns white
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a tub of water (d) a towel for spills
34. 34.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
35. 35.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
36. 36.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
37. 37.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to keep children safe (d) to win a prize
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) a battery cell (d) a results table
39. 39.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
40. 40.🔍 Which is the odd one out? (a) a piece of thermocol (b) a feather (c) a pebble (d) an ice cube

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