Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 821 · 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 should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
2. 2.True or false: a metal key sinks in water. (a) True (b) False
3. 3.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the tub (d) the water
4. 4.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
5. 5.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
6. 6.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
7. 7.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
8. 8.⚖️ 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) True (b) False
9. 9.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
10. 10.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it floats (d) it sinks
11. 11.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
12. 12.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
13. 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a towel for spills (d) a tub of water
14. 14.True or false: an iron nail floats on water. (a) True (b) False
15. 15.🧺 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) small test objects (d) a magnet
16. 16.🔍 Which is the odd one out? (a) a dry leaf (b) an empty capped bottle (c) a glass marble (d) a feather
17. 17.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
18. 18.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
19. 19.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
21. 21.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
22. 22.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
23. 23.🛟 Which of these sinks in water? (a) an ice cube (b) a ping-pong ball (c) a cork (d) a pebble
24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
25. 25.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
26. 26.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
27. 27.🛟 Does a feather float or sink in water? (a) sinks (b) floats
28. 28.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
29. 29.⚖️ 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 change it (b) we keep it the same (c) we measure it
30. 30.🛟 Which of these floats on water? (a) a ping-pong ball (b) an iron nail (c) a glass marble (d) a metal key
31. 31.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
32. 32.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) an iron nail (d) a piece of thermocol
33. 33.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a towel for spills (c) a tub of water (d) a results table
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 amount of clay (b) the tub of water (c) the kind of clay (d) whether it floats
35. 35.🧺 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) small test objects (d) a battery cell
36. 36.🛟 Which of these floats on water? (a) an iron nail (b) a steel spoon (c) a cork (d) a ball of clay
37. 37.⚖️ 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 measure it (b) we change it (c) we keep it the same
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a battery cell (d) small test objects
39. 39.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
40. 40.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a steel spoon (c) a dry leaf (d) an ice cube

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