Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 83 · 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.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
2. 2.🛟 Does a feather float or sink in water? (a) sinks (b) floats
3. 3.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
4. 4.🛟 Which of these floats on water? (a) a metal key (b) an ice cube (c) a coin (d) a ball of clay
5. 5.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) small test objects (d) a towel for spills
7. 7.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
8. 8.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it turns blue (d) it floats higher
9. 9.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
10. 10.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) an empty capped bottle (d) a ping-pong ball
11. 11.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
12. 12.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a magnet (c) a balloon (d) yeast
13. 13.⚖️ 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 shape of the clay (c) the amount of clay
14. 14.🧺 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 balloon (d) small test objects
15. 15.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a cork (c) a feather (d) a steel spoon
16. 16.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a mirror (c) a towel for spills (d) small test objects
18. 18.⚖️ 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
19. 19.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a magnet (c) yeast (d) a results table
20. 20.🔍 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
21. 21.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) an ice cube (d) an iron nail
22. 22.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) an iron nail (b) a glass marble (c) a metal key (d) a dry leaf
24. 24.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
25. 25.🔍 Which is the odd one out? (a) a ball of clay (b) a dry leaf (c) an ice-cream stick (d) a cork
26. 26.🔍 Which is the odd one out? (a) a glass marble (b) an ice cube (c) a feather (d) a piece of thermocol
27. 27.🧺 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
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a balloon (d) a magnet
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.⚖️ 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 amount of clay
31. 31.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a coin (c) a dry leaf (d) an ice cube
32. 32.⚖️ 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
33. 33.True or false: a ping-pong ball floats on water. (a) True (b) False
34. 34.True or false: a ball of clay floats on water. (a) False (b) True
35. 35.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
36. 36.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
37. 37.⚖️ 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) the amount of clay (d) whether it floats
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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
40. 40.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True

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