Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 52 · 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.🧊 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
2. 2.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
3. 3.⚖️ 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
4. 4.🛟 Does a feather float or sink in water? (a) sinks (b) floats
5. 5.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
6. 6.True or false: a coin sinks in water. (a) True (b) False
7. 7.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice-cream stick (c) a piece of thermocol (d) a coin
8. 8.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) lots of salt stirred in (d) a few ice cubes
9. 9.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
10. 10.🛟 Does a coin float or sink in water? (a) floats (b) sinks
11. 11.⚖️ 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
12. 12.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
13. 13.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a feather (b) a piece of thermocol (c) a dry leaf (d) a ball of clay
15. 15.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
16. 16.⚖️ 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) False (b) True
17. 17.⚖️ 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
18. 18.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
19. 19.🛟 Which of these floats on water? (a) a ping-pong ball (b) a glass marble (c) a steel spoon (d) a pebble
20. 20.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice-cream stick (c) a dry leaf (d) a metal key
21. 21.🛟 Which of these floats on water? (a) an iron nail (b) an empty capped bottle (c) a steel spoon (d) a pebble
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a tub of water (d) a results table
23. 23.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
24. 24.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) a tub of water (d) a mirror
25. 25.🔍 Which is the odd one out? (a) a metal key (b) a feather (c) a pebble (d) an iron nail
26. 26.⚖️ 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 change it (b) we measure it (c) we keep it the same
27. 27.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it dissolves (c) it turns to stone (d) it sinks faster
28. 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) a balloon
29. 29.True or false: a glass marble sinks in water. (a) False (b) True
30. 30.🛟 Does a cork float or sink in water? (a) floats (b) sinks
31. 31.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
32. 32.🛟 Which of these floats on water? (a) an iron nail (b) a piece of thermocol (c) a glass marble (d) a ball of clay
33. 33.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a mirror (c) a towel for spills (d) small test objects
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) the tub of water (d) whether it floats
35. 35.True or false: a cork sinks in water. (a) False (b) True
36. 36.⚖️ 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
37. 37.True or false: a glass marble floats on water. (a) False (b) True
38. 38.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to keep children safe (d) to win a prize
39. 39.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once
40. 40.⚖️ 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) whether it floats (d) the shape of the clay

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