Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 153 · 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.🛟 Which of these sinks in water? (a) an iron nail (b) an ice-cream stick (c) a piece of thermocol (d) a feather
2. 2.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
3. 3.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a ping-pong ball (d) a glass marble
4. 4.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it floats (d) it dissolves
5. 5.🛟 Which of these sinks in water? (a) an ice cube (b) a coin (c) a dry leaf (d) a cork
6. 6.⚖️ 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
7. 7.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
8. 8.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
9. 9.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
10. 10.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it can float (d) it sinks faster
11. 11.⚖️ 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
12. 12.🛟 Does a cork float or sink in water? (a) floats (b) sinks
13. 13.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a magnet (d) a towel for spills
15. 15.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
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 what we measure. (a) True (b) False
17. 17.⚖️ 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
18. 18.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
19. 19.True or false: a feather floats on water. (a) False (b) True
20. 20.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the cork itself (d) the water
21. 21.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
22. 22.🧺 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) small test objects (d) turmeric powder
23. 23.True or false: an empty capped bottle floats on water. (a) False (b) True
24. 24.🛟 Which of these sinks in water? (a) a pebble (b) an ice cube (c) an empty capped bottle (d) a piece of thermocol
25. 25.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
26. 26.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
27. 27.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
28. 28.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it dissolves (c) it turns white (d) it still floats
29. 29.🔍 Which is the odd one out? (a) an iron nail (b) an ice cube (c) a cork (d) a ping-pong ball
30. 30.⚖️ 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) True (b) False
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a towel for spills (d) small test objects
32. 32.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
33. 33.⚖️ 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) the tub of water (c) the amount of clay (d) whether it floats
34. 34.⚖️ 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
35. 35.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
36. 36.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) yeast (c) a tub of water (d) a balloon
37. 37.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
38. 38.⚖️ 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) False (b) True
39. 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a tub of water (d) a towel for spills

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