Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 35 · 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 odd one out? (a) a pebble (b) an ice-cream stick (c) an empty capped bottle (d) a dry leaf
2. 2.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) it has a magnet (d) its hollow shape
3. 3.🛟 Which of these floats on water? (a) an ice-cream stick (b) an iron nail (c) a glass marble (d) a pebble
4. 4.⚖️ 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 change it (c) we keep it the same
5. 5.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) a balloon
7. 7.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
8. 8.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) lots of salt stirred in (c) a little shaking (d) a few ice cubes
9. 9.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a battery cell (d) a tub of water
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a balloon (d) small test objects
11. 11.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a mirror (d) a tub of water
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) the kind of clay (c) whether it floats
14. 14.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it sinks (d) it melts
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) turmeric powder (d) a balloon
16. 16.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) yeast (d) a towel for spills
17. 17.⚖️ 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
18. 18.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) a results table (d) a tub of water
19. 19.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
20. 20.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
21. 21.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
22. 22.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
23. 23.🧺 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) yeast (d) a tub of water
24. 24.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
25. 25.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
26. 26.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
27. 27.⚖️ 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 change it (c) we measure it
28. 28.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the shape of the clay (c) the tub of water (d) whether it floats
30. 30.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
31. 31.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is very cold (d) ice is less dense
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
33. 33.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
34. 34.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
35. 35.True or false: an ice-cream stick floats on water. (a) False (b) True
36. 36.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
37. 37.🔍 Which is the odd one out? (a) a coin (b) an ice-cream stick (c) a piece of thermocol (d) a feather
38. 38.⚖️ 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 amount of clay (b) the tub of water (c) the shape of the clay (d) the kind of clay
39. 39.True or false: a ping-pong ball sinks in water. (a) False (b) True
40. 40.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it sinks (d) it turns white

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