Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 155 · 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.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
2. 2.🔍 Which is the odd one out? (a) a piece of thermocol (b) a feather (c) a ball of clay (d) an empty capped bottle
3. 3.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice-cream stick (c) a metal key (d) an empty capped bottle
6. 6.🛟 Which of these floats on water? (a) a coin (b) a piece of thermocol (c) a metal key (d) a ball of clay
7. 7.⚖️ 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 keep it the same (b) we measure it (c) we change it
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) small test objects (d) yeast
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
11. 11.True or false: a dry leaf sinks in water. (a) True (b) False
12. 12.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
13. 13.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) a metal key (d) an empty capped bottle
14. 14.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it melts (d) it turns blue
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a tub of water (d) a mirror
16. 16.🔍 Which is the odd one out? (a) a steel spoon (b) an empty capped bottle (c) a ping-pong ball (d) a feather
17. 17.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to splash everyone (c) to hide the corks (d) to win a prize
18. 18.🧺 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 towel for spills (d) a battery cell
19. 19.🧊 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
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a mirror (c) small test objects (d) a tub of water
21. 21.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
22. 22.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
23. 23.🛟 Which of these floats on water? (a) a glass marble (b) a metal key (c) a steel spoon (d) an ice-cream stick
24. 24.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
25. 25.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) lots of salt stirred in (c) a few ice cubes (d) more plain water
26. 26.🔍 Which is the odd one out? (a) a cork (b) an ice-cream stick (c) a ping-pong ball (d) a pebble
27. 27.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) an ice cube (d) a ping-pong ball
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a battery cell (c) turmeric powder (d) a magnet
29. 29.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a towel for spills (d) a results table
30. 30.⚖️ 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 kind of clay (c) the amount of clay (d) whether it floats
31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a balloon (c) a magnet (d) yeast
32. 32.⚖️ 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
33. 33.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) sea water is warm (d) it has a magnet
34. 34.⚖️ 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
35. 35.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it floats (d) it dissolves
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a results table (c) a towel for spills (d) small test objects
37. 37.⚖️ 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 shape of the clay (c) the tub of water (d) whether it floats
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
39. 39.🛟 Does a cork float or sink in water? (a) sinks (b) floats
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) yeast (c) a tub of water (d) a mirror

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