Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 636 · 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.🔮 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
2. 2.🛟 Which of these sinks in water? (a) a cork (b) a piece of thermocol (c) an ice-cream stick (d) a coin
3. 3.True or false: a cork sinks in water. (a) True (b) False
4. 4.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it sinks (d) it turns white
5. 5.⚖️ 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
6. 6.⚖️ 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
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a towel for spills (d) turmeric powder
8. 8.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
9. 9.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
10. 10.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a coin (d) an ice-cream stick
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) a results table (d) small test objects
12. 12.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
13. 13.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a results table (c) a towel for spills (d) a tub of water
14. 14.⚖️ 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 amount of clay (d) the shape of the clay
15. 15.⚖️ 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 measure it (c) we change it
16. 16.🔍 Which is the odd one out? (a) a dry leaf (b) a cork (c) a metal key (d) a feather
17. 17.⚖️ 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 keep it the same (b) we measure it (c) we change it
18. 18.True or false: a coin floats on water. (a) True (b) False
19. 19.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) a coin (d) an empty capped bottle
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
21. 21.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the tub (d) the air above
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a results table (d) a towel for spills
23. 23.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
24. 24.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
25. 25.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) a cork (d) a coin
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a towel for spills (d) a magnet
27. 27.🛟 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 keep children safe (d) to splash everyone
28. 28.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
29. 29.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) a results table (d) a balloon
31. 31.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
32. 32.🧊 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
33. 33.🥚 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
34. 34.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
35. 35.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
36. 36.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it sinks (d) it bounces up
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
38. 38.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
39. 39.True or false: an ice cube sinks in water. (a) False (b) True
40. 40.🛟 Which of these floats on water? (a) a ball of clay (b) a pebble (c) a coin (d) an ice cube

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