Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 296 · 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 fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) lots of salt stirred in (d) more plain water
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) whether it floats (b) the amount of clay (c) the kind of clay (d) the shape of the clay
3. 3.True or false: a ball of clay floats on water. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) a ball of clay (b) an iron nail (c) an ice cube (d) a pebble
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.🛟 Which of these floats on water? (a) a cork (b) a metal key (c) a pebble (d) a steel spoon
8. 8.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
11. 11.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
12. 12.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it dissolves (d) it sinks faster
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) a battery cell (d) a results table
14. 14.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
15. 15.⚖️ 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) whether it floats (c) the tub of water
16. 16.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
17. 17.True or false: a pebble sinks in water. (a) True (b) False
18. 18.⚖️ 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
19. 19.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
20. 20.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) run around the tub (c) leave water on the floor (d) play near a deep pond
21. 21.🛟 Which of these sinks in water? (a) a pebble (b) a feather (c) an ice cube (d) a dry leaf
22. 22.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
23. 23.🔍 Which is the odd one out? (a) a ping-pong ball (b) a coin (c) a cork (d) an ice cube
24. 24.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
25. 25.🛟 Which of these floats on water? (a) an iron nail (b) a steel spoon (c) a glass marble (d) an empty capped bottle
26. 26.True or false: a piece of thermocol sinks in water. (a) False (b) True
27. 27.True or false: a ping-pong ball sinks in water. (a) True (b) False
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) a towel for spills (d) small test objects
30. 30.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
31. 31.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) the big log (d) neither of them
32. 32.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
33. 33.True or false: a glass marble floats on water. (a) True (b) False
34. 34.🛟 Which of these sinks in water? (a) a dry leaf (b) a cork (c) a steel spoon (d) a piece of thermocol
35. 35.⚖️ 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) True (b) False
36. 36.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) a balloon (d) a mirror
37. 37.True or false: a feather floats on water. (a) False (b) True
38. 38.🧺 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 magnet (d) small test objects
39. 39.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice cube (c) an iron nail (d) a feather
40. 40.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats

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