Floating and Sinking Experiment Worksheet

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

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