Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 522 · 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.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
2. 2.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
3. 3.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) a few ice cubes (d) lots of salt stirred in
4. 4.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a tub of water (c) a balloon (d) a mirror
5. 5.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) an ice-cream stick (d) a cork
6. 6.⚖️ 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 kind of clay (c) the tub of water (d) whether it floats
7. 7.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a battery cell (d) yeast
8. 8.🛟 Which of these sinks in water? (a) a steel spoon (b) a ping-pong ball (c) an ice-cream stick (d) a cork
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
10. 10.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
11. 11.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a feather (d) a pebble
12. 12.⚖️ 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
13. 13.🔍 Which is the odd one out? (a) a dry leaf (b) a piece of thermocol (c) a feather (d) a glass marble
14. 14.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a balloon (c) small test objects (d) a towel for spills
16. 16.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it turns to stone (d) it dissolves
17. 17.⚖️ 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
18. 18.True or false: a ping-pong ball sinks in water. (a) True (b) False
19. 19.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice-cream stick (c) a metal key (d) an empty capped bottle
20. 20.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) it has a magnet (d) its hollow shape
21. 21.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
22. 22.🧺 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) turmeric powder (d) a tub of water
23. 23.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is very cold (d) ice is less dense
24. 24.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a battery cell (c) turmeric powder (d) yeast
26. 26.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) both of them (d) the big log
27. 27.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
28. 28.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
29. 29.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
30. 30.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
31. 31.True or false: a dry leaf sinks in water. (a) True (b) False
32. 32.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
33. 33.🛟 Which of these sinks in water? (a) a feather (b) a ping-pong ball (c) a glass marble (d) an ice-cream stick
34. 34.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a magnet (c) a tub of water (d) a towel for spills
35. 35.⚖️ 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
36. 36.True or false: a cork floats on water. (a) False (b) True
37. 37.⚖️ 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
38. 38.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) an iron nail (d) a piece of thermocol
39. 39.True or false: an empty capped bottle floats on water. (a) False (b) True
40. 40.🔍 Which is the odd one out? (a) a pebble (b) a cork (c) a dry leaf (d) an empty capped bottle

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