Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 587 · 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.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) sea water is warm (d) it has a magnet
2. 2.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
3. 3.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it floats (d) it sinks
6. 6.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
7. 7.⚖️ 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
8. 8.🧺 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 results table (d) a balloon
9. 9.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
10. 10.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
11. 11.⚖️ 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 shape of the clay (c) the tub of water (d) whether it floats
12. 12.True or false: a ping-pong ball sinks in water. (a) False (b) True
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) small test objects (d) a battery cell
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
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 kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
19. 19.⚖️ 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 measure it (b) we keep it the same (c) we change it
20. 20.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
21. 21.🔍 Which is the odd one out? (a) a piece of thermocol (b) a dry leaf (c) an iron nail (d) a feather
22. 22.True or false: a pebble floats on water. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) a feather (b) a glass marble (c) an ice cube (d) an ice-cream stick
24. 24.🔮 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 can float (d) it sinks faster
25. 25.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a towel for spills (d) turmeric powder
27. 27.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
28. 28.🔍 Which is the odd one out? (a) a glass marble (b) a coin (c) a pebble (d) a cork
29. 29.🧺 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) turmeric powder (d) a towel for spills
30. 30.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
31. 31.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
32. 32.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
33. 33.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it turns white (d) it dissolves
34. 34.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a piece of thermocol (c) a glass marble (d) an ice cube
35. 35.🛟 Does a cork float or sink in water? (a) floats (b) sinks
36. 36.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
37. 37.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) yeast (d) a magnet
38. 38.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
39. 39.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) yeast (d) small test objects
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a tub of water (d) a battery cell

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