Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 46 · 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.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) False (b) True
2. 2.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
3. 3.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of thermocol (c) an ice cube (d) an ice-cream stick
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
5. 5.⚖️ 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 amount of clay (d) the shape of the clay
6. 6.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
7. 7.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
8. 8.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
9. 9.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
10. 10.⚖️ 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
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a tub of water (d) small test objects
12. 12.True or false: a glass marble floats on water. (a) False (b) True
13. 13.🧺 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) small test objects (d) a magnet
14. 14.True or false: a ball of clay floats on water. (a) False (b) True
15. 15.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) its hollow shape (d) it has a magnet
16. 16.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
17. 17.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
18. 18.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
19. 19.True or false: a pebble sinks in water. (a) False (b) True
20. 20.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
21. 21.🛟 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 splash everyone (d) to hide the corks
22. 22.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) more plain water (d) lots of salt stirred in
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
24. 24.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
25. 25.True or false: a cork sinks in water. (a) True (b) False
26. 26.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
27. 27.⚖️ 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
28. 28.⚖️ 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
29. 29.True or false: a coin sinks in water. (a) True (b) False
30. 30.⚖️ 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 tub of water (c) the shape of the clay
31. 31.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
32. 32.True or false: a dry leaf sinks in water. (a) True (b) False
33. 33.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) turmeric powder (d) small test objects
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the kind of clay (c) the tub of water (d) the shape of the clay
36. 36.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
37. 37.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
38. 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
39. 39.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
40. 40.⚖️ 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 change it (c) we measure it

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