Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 730 · 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? Which of these is kept the same? (a) the amount of clay (b) whether it floats (c) the shape of the clay
2. 2.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it floats higher (d) it melts
3. 3.🛟 Which of these floats on water? (a) an ice-cream stick (b) a ball of clay (c) a glass marble (d) a coin
4. 4.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
5. 5.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
6. 6.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the kind of clay (c) whether it floats (d) the tub of water
8. 8.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
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 keep it the same (b) we change it (c) we measure it
10. 10.⚖️ 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
11. 11.True or false: a metal key sinks in water. (a) False (b) True
12. 12.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it floats (d) it sinks
13. 13.True or false: a metal key floats on water. (a) True (b) False
14. 14.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a magnet (d) a towel for spills
16. 16.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
17. 17.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
18. 18.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
19. 19.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
20. 20.⚖️ 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 measure it (b) we keep it the same (c) we change it
21. 21.True or false: a coin floats on water. (a) True (b) False
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.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it sinks (d) it dissolves
24. 24.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
25. 25.🛟 Which of these floats on water? (a) a ping-pong ball (b) a steel spoon (c) a ball of clay (d) an iron nail
26. 26.⚖️ 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 amount of clay (b) the kind of clay (c) the shape of the clay (d) the tub of water
27. 27.🔍 Which is the odd one out? (a) a ping-pong ball (b) a pebble (c) a steel spoon (d) a glass marble
28. 28.⚖️ 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
29. 29.🛟 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) wipe up spills at once (d) run around the tub
30. 30.🔍 Which is the odd one out? (a) a pebble (b) a dry leaf (c) a ping-pong ball (d) a piece of thermocol
31. 31.True or false: a ping-pong ball sinks in water. (a) False (b) True
32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
33. 33.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
34. 34.🔍 Which is the odd one out? (a) a pebble (b) a ball of clay (c) a coin (d) a piece of thermocol
35. 35.True or false: a dry leaf sinks in water. (a) True (b) False
36. 36.⚖️ 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
37. 37.🔍 Which is the odd one out? (a) an ice-cream stick (b) an ice cube (c) a ping-pong ball (d) a metal key
38. 38.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the water (d) the cork itself
39. 39.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it turns to stone (c) it dissolves (d) it sinks faster
40. 40.🧺 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 mirror

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