Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 624 · 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.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
2. 2.True or false: a pebble floats on water. (a) True (b) False
3. 3.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
4. 4.🧺 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) small test objects (d) a balloon
5. 5.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it melts (d) it floats higher
6. 6.True or false: a cork floats on water. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) a metal key (b) a dry leaf (c) a pebble (d) a coin
8. 8.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) leave water on the floor (d) play near a deep pond
9. 9.True or false: a coin floats on water. (a) True (b) False
10. 10.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
12. 12.🧊 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
13. 13.⚖️ 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 measure it (b) we keep it the same (c) we change it
14. 14.⚖️ 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
15. 15.🛟 Which of these sinks in water? (a) a ball of clay (b) a ping-pong ball (c) a feather (d) an empty capped bottle
16. 16.True or false: an iron nail floats on water. (a) False (b) True
17. 17.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it turns white (d) it sinks
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 keep it the same (b) we measure it (c) we change it
19. 19.🛟 Which of these sinks in water? (a) a glass marble (b) a feather (c) a dry leaf (d) a cork
20. 20.🛟 Which of these floats on water? (a) a pebble (b) a metal key (c) an iron nail (d) a dry leaf
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
22. 22.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) more plain water (d) a few ice cubes
23. 23.🔍 Which is the odd one out? (a) a feather (b) a glass marble (c) a dry leaf (d) a piece of thermocol
24. 24.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
25. 25.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
26. 26.⚖️ 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 keep it the same (b) we measure it (c) we change it
27. 27.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) it has a magnet (d) steel is very light
28. 28.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
29. 29.True or false: a cork sinks in water. (a) False (b) True
30. 30.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
31. 31.⚖️ 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 amount of clay (c) the shape of the clay (d) the tub of water
32. 32.⚖️ 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) whether it floats (c) the shape of the clay
33. 33.⚖️ 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 change it (c) we measure it
34. 34.🛟 Does a cork float or sink in water? (a) sinks (b) floats
35. 35.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
36. 36.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
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 tub of water (b) the shape of the clay (c) the kind of clay (d) whether it floats
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a magnet (d) a tub of water
39. 39.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) yeast (d) turmeric powder
40. 40.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks

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