Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 117 · 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 towel for spills is not needed for the float-or-sink test. (a) True (b) False
2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) a towel for spills (d) small test objects
3. 3.🔍 Which is the odd one out? (a) a cork (b) a coin (c) a pebble (d) a ball of clay
4. 4.🧺 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
5. 5.🛟 Does a coin float or sink in water? (a) floats (b) sinks
6. 6.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
7. 7.⚖️ 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 tub of water (c) the shape of the clay (d) the kind of clay
8. 8.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice cube (c) a piece of thermocol (d) a glass marble
9. 9.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
10. 10.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
11. 11.True or false: a ball of clay floats on water. (a) True (b) False
12. 12.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
13. 13.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the cork itself (d) the tub
14. 14.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
15. 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a battery cell (c) small test objects (d) a towel for spills
16. 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the amount of clay (c) whether it floats (d) the kind of clay
17. 17.🔍 Which is the odd one out? (a) a coin (b) a steel spoon (c) a dry leaf (d) an iron nail
18. 18.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
19. 19.True or false: a pebble floats on water. (a) False (b) True
20. 20.🔍 Which is the odd one out? (a) a ping-pong ball (b) an iron nail (c) a feather (d) an empty capped bottle
21. 21.🛟 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
22. 22.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
23. 23.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
24. 24.⚖️ 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 keep it the same (b) we measure it (c) we change it
25. 25.🔍 Which is the odd one out? (a) a metal key (b) a glass marble (c) a piece of thermocol (d) a ball of clay
26. 26.🧊 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
27. 27.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
28. 28.⚖️ 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
29. 29.True or false: a ball of clay sinks in water. (a) True (b) False
30. 30.True or false: a coin floats on water. (a) True (b) False
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a tub of water (c) a results table (d) a towel for spills
32. 32.🔍 Which is the odd one out? (a) a feather (b) an ice cube (c) a metal key (d) a cork
33. 33.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) sea water is warm (d) its hollow shape
34. 34.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
35. 35.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it sinks (c) it floats higher (d) it melts
36. 36.True or false: an empty capped bottle floats on water. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) an empty capped bottle (b) a glass marble (c) a coin (d) a pebble
38. 38.🛟 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
39. 39.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
40. 40.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it sinks faster (d) it turns to stone

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