Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 301 · 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.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
2. 2.⚖️ 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 measure it (b) we keep it the same (c) we change it
3. 3.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
4. 4.🔍 Which is the odd one out? (a) a coin (b) an ice-cream stick (c) a steel spoon (d) a metal key
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a balloon (c) a towel for spills (d) small test objects
6. 6.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) small test objects (c) a balloon (d) a battery cell
7. 7.🛟 Which of these sinks in water? (a) a cork (b) a dry leaf (c) a pebble (d) an ice-cream stick
8. 8.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
10. 10.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to keep children safe (d) to hide the corks
12. 12.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a results table (d) turmeric powder
13. 13.🔍 Which is the odd one out? (a) a coin (b) a metal key (c) an iron nail (d) a piece of thermocol
14. 14.⚖️ 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
15. 15.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
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 can float (d) it dissolves
18. 18.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
19. 19.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
20. 20.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a mirror (d) a magnet
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a battery cell (c) a towel for spills (d) small test objects
24. 24.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) play near a deep pond (d) run around the tub
25. 25.🛟 Which of these sinks in water? (a) a feather (b) an empty capped bottle (c) a coin (d) a piece of thermocol
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the tub of water (c) the shape of the clay
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a towel for spills (d) a results table
29. 29.⚖️ 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
30. 30.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
31. 31.True or false: a glass marble sinks in water. (a) True (b) False
32. 32.🧺 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 mirror (d) small test objects
33. 33.True or false: a steel spoon sinks in water. (a) True (b) False
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) whether it floats (c) the shape of the clay (d) the tub of water
35. 35.⚖️ 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) whether it floats (c) the kind of clay (d) the amount of clay
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a results table (d) a magnet
37. 37.⚖️ 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
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
40. 40.True or false: a cork sinks in water. (a) False (b) True

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