Floating and Sinking Experiment Worksheet

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

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