Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 523 · 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 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
2. 2.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the cork itself (d) the water
3. 3.🛟 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
4. 4.🔍 Which is the odd one out? (a) a cork (b) a feather (c) a piece of thermocol (d) a steel spoon
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) a mirror (d) small test objects
6. 6.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) water is sticky (d) ice is less dense
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a balloon (c) a towel for spills (d) a tub of water
8. 8.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
9. 9.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
10. 10.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) neither of them (d) the small pebble
11. 11.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) turmeric powder (c) a towel for spills (d) a tub of water
13. 13.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
14. 14.🔍 Which is the odd one out? (a) a dry leaf (b) a metal key (c) an ice cube (d) a cork
15. 15.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
16. 16.🛟 Which of these sinks in water? (a) a metal key (b) a cork (c) an ice cube (d) a ping-pong ball
17. 17.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
18. 18.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a glass marble (c) a feather (d) a dry leaf
19. 19.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
20. 20.🔍 Which is the odd one out? (a) a ball of clay (b) a dry leaf (c) an empty capped bottle (d) a cork
21. 21.⚖️ 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 measure it (c) we keep it the same
22. 22.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a battery cell (c) turmeric powder (d) a mirror
23. 23.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
24. 24.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) small test objects (d) a tub of water
26. 26.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice cube (c) a dry leaf (d) a coin
27. 27.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
28. 28.🔮 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
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
30. 30.🛟 Which of these floats on water? (a) a metal key (b) an ice-cream stick (c) a pebble (d) a coin
31. 31.🛟 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
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a balloon (d) a results table
33. 33.⚖️ 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 kind of clay (c) the shape of the clay (d) the tub of water
34. 34.🔮 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 dissolves (d) it sinks faster
35. 35.🔍 Which is the odd one out? (a) a piece of thermocol (b) an iron nail (c) an ice cube (d) a cork
36. 36.True or false: a steel spoon floats on water. (a) True (b) False
37. 37.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
38. 38.🔍 Which is the odd one out? (a) a glass marble (b) an empty capped bottle (c) a metal key (d) a steel spoon
39. 39.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
40. 40.🚢 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

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