Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 325 · 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 of these is not needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) small test objects (d) a results table
2. 2.🛟 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
3. 3.⚖️ 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) False (b) True
4. 4.⚖️ 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 keep it the same (c) we change it
5. 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
6. 6.True or false: a piece of thermocol floats on water. (a) False (b) True
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a magnet (d) a results table
8. 8.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a towel for spills (c) small test objects (d) a tub of water
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
11. 11.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) an iron nail (d) an ice-cream stick
12. 12.🔍 Which is the odd one out? (a) a ball of clay (b) an iron nail (c) a pebble (d) a piece of thermocol
13. 13.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
14. 14.True or false: a feather sinks in water. (a) True (b) False
15. 15.True or false: an empty capped bottle sinks in water. (a) False (b) True
16. 16.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) more plain water (c) a little shaking (d) a few ice cubes
17. 17.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it melts (d) it sinks
18. 18.⚖️ 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
19. 19.🔮 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
20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a battery cell (c) a results table (d) a tub of water
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) turmeric powder (c) a results table (d) small test objects
22. 22.🛟 Which of these floats on water? (a) a metal key (b) an ice cube (c) a steel spoon (d) an iron nail
23. 23.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
24. 24.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
25. 25.🔍 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
26. 26.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
27. 27.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
28. 28.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
29. 29.True or false: a metal key floats on water. (a) False (b) True
30. 30.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
31. 31.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
32. 32.⚖️ 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
33. 33.🔍 Which is the odd one out? (a) a ball of clay (b) a ping-pong ball (c) a glass marble (d) a steel spoon
34. 34.⚖️ 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
35. 35.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) an iron nail (d) a ping-pong ball
36. 36.⚖️ 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 kind of clay (b) the tub of water (c) the shape of the clay (d) the amount of clay
37. 37.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
38. 38.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
39. 39.True or false: a steel spoon sinks in water. (a) False (b) True
40. 40.True or false: an iron nail floats on water. (a) True (b) False

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