Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 914 · 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 sinks in water? (a) an empty capped bottle (b) a feather (c) a pebble (d) a cork
2. 2.🧺 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) a magnet (d) small test objects
3. 3.⚖️ 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 tub of water (b) the amount of clay (c) the kind of clay (d) the shape of the clay
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) yeast (c) small test objects (d) a towel for spills
5. 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
6. 6.🥚 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
7. 7.🔍 Which is the odd one out? (a) a glass marble (b) a metal key (c) a coin (d) a cork
8. 8.⚖️ 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
9. 9.⚖️ 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
10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a towel for spills (d) a tub of water
11. 11.True or false: an iron nail floats on water. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) a coin (b) an ice-cream stick (c) an iron nail (d) a ball of clay
13. 13.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it sinks (c) it bounces up (d) it dissolves
14. 14.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) water is sticky (c) ice is very cold (d) ice is less dense
15. 15.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) wipe up spills at once (c) play near a deep pond (d) run around the tub
16. 16.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
17. 17.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
18. 18.⚖️ 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 amount of clay (c) whether it floats (d) the kind of clay
19. 19.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
20. 20.🛟 Which of these floats on water? (a) a coin (b) an iron nail (c) an empty capped bottle (d) a steel spoon
21. 21.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a towel for spills (d) a balloon
23. 23.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a tub of water
25. 25.⚖️ 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
26. 26.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
27. 27.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) an ice-cream stick (d) a steel spoon
28. 28.⚖️ 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
29. 29.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (c) it has a magnet (d) steel is very light
30. 30.True or false: a feather sinks in water. (a) True (b) False
31. 31.🔮 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
32. 32.🛟 Which of these sinks in water? (a) a cork (b) a feather (c) a coin (d) an ice cube
33. 33.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the water (d) the tub
34. 34.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
36. 36.True or false: a metal key floats on water. (a) True (b) False
37. 37.⚖️ 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) True (b) False
38. 38.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
39. 39.⚖️ 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
40. 40.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed

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