Floating and Sinking Experiment Worksheet

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

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