Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 725 · 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.⚖️ 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 kind of clay (c) the shape of the clay (d) whether it floats
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a tub of water (d) a towel for spills
3. 3.🔍 Which is the odd one out? (a) a cork (b) an empty capped bottle (c) a steel spoon (d) an ice-cream stick
4. 4.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
5. 5.⚖️ 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 amount of clay (c) the shape of the clay (d) whether it floats
6. 6.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) a steel spoon (d) a cork
7. 7.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
8. 8.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a magnet (d) a mirror
9. 9.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) small test objects (d) a magnet
10. 10.True or false: a pebble floats on water. (a) True (b) False
11. 11.🛟 Which of these sinks in water? (a) a feather (b) an empty capped bottle (c) a metal key (d) a dry leaf
12. 12.🔍 Which is the odd one out? (a) an empty capped bottle (b) a feather (c) a coin (d) an ice-cream stick
13. 13.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
14. 14.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
15. 15.🔮 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
16. 16.🧺 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
17. 17.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) water is sticky (d) ice is magnetic
18. 18.⚖️ 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 keep it the same (c) we change it
19. 19.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
20. 20.🔮 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
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) yeast
22. 22.True or false: a coin floats on water. (a) True (b) False
23. 23.🛟 Does a cork float or sink in water? (a) floats (b) sinks
24. 24.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
25. 25.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
26. 26.🛟 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
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) turmeric powder (d) a results table
29. 29.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
30. 30.🛟 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
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) False (b) True
32. 32.⚖️ 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
33. 33.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
34. 34.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the big log (c) the small pebble (d) both of them
35. 35.⚖️ 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
36. 36.True or false: a feather floats on water. (a) True (b) False
37. 37.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a tub of water (c) yeast (d) a battery cell
39. 39.🔍 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
40. 40.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks

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