Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 650 · 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 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
2. 2.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a dry leaf (d) a ball of clay
3. 3.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a magnet
5. 5.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it floats higher (d) it sinks
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a tub of water (d) a results table
7. 7.⚖️ 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 kind of clay (c) whether it floats (d) the tub of water
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) turmeric powder (c) yeast (d) small test objects
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
10. 10.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
11. 11.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
12. 12.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
13. 13.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
14. 14.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) a few ice cubes (d) lots of salt stirred in
15. 15.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
16. 16.True or false: a steel spoon floats on water. (a) False (b) True
17. 17.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it dissolves (d) it turns to stone
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a battery cell (d) a balloon
19. 19.⚖️ 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
20. 20.🛟 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 hide the corks (d) to keep children safe
21. 21.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the cork itself (d) the water
22. 22.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) 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 keep it the same (b) we measure it (c) we change it
24. 24.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a magnet (d) a results table
25. 25.True or false: an empty capped bottle floats on water. (a) False (b) True
26. 26.🧺 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) turmeric powder (d) a results table
27. 27.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
28. 28.True or false: an empty capped bottle sinks in water. (a) True (b) False
29. 29.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice-cream stick (c) a steel spoon (d) a cork
30. 30.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) an ice cube (b) a steel spoon (c) an ice-cream stick (d) a ping-pong ball
32. 32.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it sinks (c) it dissolves (d) it bounces up
33. 33.True or false: a glass marble sinks in water. (a) False (b) True
34. 34.🛟 Which of these floats on water? (a) a metal key (b) an iron nail (c) a dry leaf (d) a steel spoon
35. 35.🔍 Which is the odd one out? (a) an iron nail (b) a cork (c) a coin (d) a pebble
36. 36.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
37. 37.True or false: a feather floats on water. (a) False (b) True
38. 38.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
39. 39.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
40. 40.True or false: a metal key sinks in water. (a) True (b) False

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