Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 407 · 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.True or false: a metal key sinks in water. (a) False (b) True
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to win a prize (d) to splash everyone
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 shape of the clay (b) the tub of water (c) whether it floats (d) the kind of clay
4. 4.⚖️ 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
5. 5.🛟 Which of these floats on water? (a) a pebble (b) a ball of clay (c) a metal key (d) an empty capped bottle
6. 6.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
7. 7.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
8. 8.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a results table (d) a towel for spills
9. 9.⚖️ 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) whether it floats (c) the tub of water (d) the shape of the clay
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
11. 11.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it floats higher (c) it turns blue (d) it melts
12. 12.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) water is sticky (d) ice is less dense
13. 13.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
14. 14.⚖️ 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) the shape of the clay (c) whether it floats
15. 15.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
16. 16.True or false: a dry leaf floats on water. (a) False (b) True
17. 17.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a mirror (c) turmeric powder (d) a towel for spills
18. 18.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
19. 19.⚖️ 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 measure it (c) we keep it the same
20. 20.⚖️ 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
21. 21.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it turns white (d) it still floats
22. 22.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a mirror (c) small test objects (d) a towel for spills
24. 24.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
25. 25.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
26. 26.⚖️ 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 measure it (c) we keep it the same
27. 27.🛟 Which of these floats on water? (a) a cork (b) a coin (c) a glass marble (d) a pebble
28. 28.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) the big log (c) both of them (d) neither of them
29. 29.🔍 Which is the odd one out? (a) a metal key (b) a ping-pong ball (c) a glass marble (d) an iron nail
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) yeast (d) a magnet
31. 31.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) a tub of water (d) a results table
33. 33.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
34. 34.True or false: a steel spoon sinks in water. (a) True (b) False
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) small test objects (d) a results table
36. 36.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
37. 37.🧺 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 battery cell (d) a tub of water
38. 38.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
39. 39.🔍 Which is the odd one out? (a) a coin (b) an ice cube (c) an ice-cream stick (d) a dry leaf
40. 40.True or false: a feather floats on water. (a) True (b) False

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