Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 249 · 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.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
2. 2.⚖️ 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
3. 3.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
4. 4.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
5. 5.⚖️ 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 change it (b) we keep it the same (c) we measure it
6. 6.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a tub of water (d) a results table
8. 8.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
9. 9.🛟 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
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) a towel for spills (d) a tub of water
11. 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the kind of clay (c) whether it floats (d) the amount of clay
12. 12.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
13. 13.⚖️ 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
14. 14.🔮 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
15. 15.True or false: an iron nail floats on water. (a) False (b) True
16. 16.🛟 Which of these floats on water? (a) a coin (b) an iron nail (c) an ice-cream stick (d) a ball of clay
17. 17.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a magnet (d) a results table
18. 18.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) turmeric powder (c) a mirror (d) a tub of water
19. 19.🔍 Which is the odd one out? (a) a ball of clay (b) a pebble (c) a dry leaf (d) a steel spoon
20. 20.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
21. 21.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the tub (d) the air above
22. 22.⚖️ 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
23. 23.⚖️ 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
24. 24.True or false: a pebble sinks in water. (a) True (b) False
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a mirror (d) turmeric powder
26. 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) small test objects (d) a magnet
27. 27.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
28. 28.⚖️ 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) False (b) True
29. 29.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
30. 30.True or false: an ice cube sinks in water. (a) False (b) True
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a towel for spills (d) a tub of water
33. 33.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
34. 34.🛟 Does a cork float or sink in water? (a) sinks (b) floats
35. 35.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it still floats (d) it dissolves
36. 36.⚖️ 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 kind of clay
37. 37.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
38. 38.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a tub of water (d) yeast
40. 40.🔍 Which is the odd one out? (a) a coin (b) an ice cube (c) a pebble (d) a metal key

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