Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 198 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a magnet (c) a tub of water (d) small test objects
2. 2.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it dissolves (d) it still floats
3. 3.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it turns blue (c) it floats higher (d) it sinks
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the kind of clay (d) the shape of the clay
5. 5.⚖️ 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) True (b) False
6. 6.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) its hollow shape (d) steel is very light
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.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the cork itself (d) the air above
9. 9.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) an ice-cream stick (d) a metal key
10. 10.⚖️ 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 tub of water
11. 11.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) a coin (d) a feather
12. 12.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
13. 13.🔍 Which is the odd one out? (a) a ping-pong ball (b) a cork (c) an ice-cream stick (d) a metal key
14. 14.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
15. 15.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
16. 16.⚖️ 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
17. 17.True or false: an ice-cream stick floats on water. (a) False (b) True
18. 18.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
19. 19.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a steel spoon (c) a piece of thermocol (d) a ping-pong ball
20. 20.🛟 Which of these floats on water? (a) an empty capped bottle (b) a coin (c) a steel spoon (d) a metal key
21. 21.🛟 Which of these sinks in water? (a) a metal key (b) a feather (c) a ping-pong ball (d) an ice cube
22. 22.⚖️ 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
23. 23.🛟 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) leave water on the floor (d) run around the tub
24. 24.⚖️ 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 amount of clay
25. 25.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a tub of water (d) a magnet
27. 27.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
28. 28.True or false: a ball of clay floats on water. (a) True (b) False
29. 29.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) yeast (d) small test objects
30. 30.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a glass marble (c) an ice-cream stick (d) a feather
31. 31.🛟 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 hide the corks (d) to splash everyone
32. 32.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
33. 33.🛟 Which of these floats on water? (a) a cork (b) an iron nail (c) a pebble (d) a ball of clay
34. 34.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
35. 35.⚖️ 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 change it (c) we keep it the same
36. 36.⚖️ 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 keep it the same (b) we measure it (c) we change it
37. 37.🛟 Which of these sinks in water? (a) an iron nail (b) a cork (c) a feather (d) an ice cube
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.True or false: an iron nail sinks in water. (a) True (b) False
40. 40.True or false: a ping-pong ball floats on water. (a) False (b) True

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