Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 91 · 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 iron nail float or sink in water? (a) floats (b) sinks
2. 2.⚖️ 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) the shape of the clay (c) the amount of clay (d) whether it floats
3. 3.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
4. 4.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
6. 6.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
7. 7.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) lots of salt stirred in (d) a little shaking
8. 8.True or false: an iron nail sinks in water. (a) False (b) True
9. 9.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a mirror (c) a tub of water (d) small test objects
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
12. 12.⚖️ 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
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a towel for spills (c) a results table (d) a tub of water
14. 14.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
15. 15.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
16. 16.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
17. 17.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
18. 18.🔮 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
19. 19.True or false: a feather sinks in water. (a) True (b) False
20. 20.⚖️ 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
21. 21.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) water is sticky (d) ice is magnetic
22. 22.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
24. 24.True or false: a cork floats on water. (a) True (b) False
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the kind of clay (d) the amount of clay
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) yeast (d) a results table
27. 27.🔍 Which is the odd one out? (a) a steel spoon (b) a ball of clay (c) a coin (d) an ice-cream stick
28. 28.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) an ice-cream stick (d) a pebble
29. 29.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a mirror (d) a battery cell
32. 32.🛟 Which of these sinks in water? (a) a ball of clay (b) a cork (c) an empty capped bottle (d) a ping-pong ball
33. 33.⚖️ 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
34. 34.🛟 Which of these sinks in water? (a) a steel spoon (b) a ping-pong ball (c) a piece of thermocol (d) a cork
35. 35.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
36. 36.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
37. 37.⚖️ 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 change it (b) we keep it the same (c) we measure it
38. 38.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
39. 39.True or false: a coin sinks in water. (a) False (b) True
40. 40.🛟 Which of these floats on water? (a) a ball of clay (b) a coin (c) a glass marble (d) a piece of thermocol

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