Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 547 · 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 safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
2. 2.🛟 Which of these floats on water? (a) a pebble (b) a metal key (c) a dry leaf (d) a steel spoon
3. 3.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
4. 4.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
5. 5.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it turns white (d) it sinks
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.⚖️ 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 tub of water (c) whether it floats (d) the kind of clay
9. 9.🔍 Which is the odd one out? (a) a ball of clay (b) an iron nail (c) an empty capped bottle (d) a steel spoon
10. 10.🔍 Which is the odd one out? (a) an iron nail (b) a coin (c) an ice cube (d) a metal key
11. 11.⚖️ 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
12. 12.⚖️ 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 tub of water (c) whether it floats
13. 13.True or false: a cork sinks in water. (a) True (b) False
14. 14.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) a coin (d) an empty capped bottle
15. 15.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) a feather (d) an iron nail
16. 16.⚖️ 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) False (b) True
17. 17.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
18. 18.🥚 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
19. 19.True or false: an ice cube floats on water. (a) True (b) False
20. 20.True or false: a ping-pong ball floats on water. (a) True (b) False
21. 21.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
22. 22.True or false: an ice cube sinks in water. (a) False (b) True
23. 23.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
24. 24.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
25. 25.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a glass marble (d) a piece of thermocol
26. 26.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
27. 27.⚖️ 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) True (b) False
28. 28.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
29. 29.🛟 Which of these sinks in water? (a) a feather (b) an ice cube (c) a metal key (d) a ping-pong ball
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a results table (c) a battery cell (d) a balloon
31. 31.⚖️ 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 keep it the same (b) we measure it (c) we change it
32. 32.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
33. 33.⚖️ 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 amount of clay
34. 34.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
35. 35.🛟 Which of these sinks in water? (a) a dry leaf (b) a ball of clay (c) a ping-pong ball (d) a piece of thermocol
36. 36.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it sinks (d) it dissolves
37. 37.⚖️ 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 keep it the same (c) we change it
38. 38.🛟 Does a cork float or sink in water? (a) sinks (b) floats
39. 39.🌊 What pushes a floating cork upward? (a) the water (b) the tub (c) the air above (d) the cork itself
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) turmeric powder (c) a towel for spills (d) a tub of water

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