Floating and Sinking Experiment Worksheet

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

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