Floating and Sinking Experiment Worksheet

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

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