Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 370 · 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? What do we do with “the shape of the clay”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🛟 Which of these floats on water? (a) a steel spoon (b) a glass marble (c) a dry leaf (d) a ball of clay
3. 3.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
4. 4.🛟 Which of these sinks in water? (a) a ball of clay (b) an ice cube (c) a cork (d) a feather
5. 5.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
6. 6.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the small pebble (d) the big log
7. 7.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a results table (d) a mirror
9. 9.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
10. 10.⚖️ 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 shape of the clay (c) the kind of clay (d) the tub of water
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a tub of water (d) a magnet
12. 12.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it sinks (c) it dissolves (d) it still floats
13. 13.🛟 Which of these sinks in water? (a) an ice-cream stick (b) a coin (c) a cork (d) an ice cube
14. 14.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) False (b) True
16. 16.⚖️ 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
17. 17.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) a steel spoon (b) a glass marble (c) an empty capped bottle (d) a ball of clay
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) small test objects (c) a towel for spills (d) a tub of water
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) turmeric powder (c) a tub of water (d) a balloon
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
23. 23.⚖️ 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
24. 24.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is magnetic (d) ice is less dense
25. 25.🔍 Which is the odd one out? (a) a pebble (b) a coin (c) a piece of thermocol (d) a glass marble
26. 26.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
27. 27.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
28. 28.🛟 Does a coin float or sink in water? (a) floats (b) sinks
29. 29.🛟 Does a feather float or sink in water? (a) sinks (b) floats
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) small test objects (d) a tub of water
31. 31.⚖️ 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
32. 32.🔍 Which is the odd one out? (a) a metal key (b) a coin (c) a steel spoon (d) a cork
33. 33.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
34. 34.⚖️ 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
35. 35.🛟 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
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) a balloon
37. 37.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
38. 38.⚖️ 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
39. 39.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
40. 40.True or false: an empty capped bottle sinks in water. (a) False (b) True

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