Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 126 · 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.⚖️ 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
2. 2.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
3. 3.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
4. 4.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
5. 5.🛟 Does a feather float or sink in water? (a) sinks (b) floats
6. 6.⚖️ 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
7. 7.🛟 Which of these floats on water? (a) an ice-cream stick (b) a metal key (c) a glass marble (d) an iron nail
8. 8.🛟 Which of these floats on water? (a) a metal key (b) an iron nail (c) a glass marble (d) an ice cube
9. 9.⚖️ 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) whether it floats (c) the shape of the clay (d) the kind of clay
10. 10.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a tub of water (d) a battery cell
11. 11.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
12. 12.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) lots of salt stirred in (d) a little shaking
13. 13.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
14. 14.True or false: an iron nail floats on water. (a) False (b) True
15. 15.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it turns blue (d) it floats higher
16. 16.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) an ice-cream stick (b) a pebble (c) a metal key (d) a coin
18. 18.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
19. 19.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it sinks (c) it dissolves (d) it bounces up
20. 20.⚖️ 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
21. 21.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) the big log (c) neither of them (d) both of them
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) a results table (d) turmeric powder
23. 23.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) leave water on the floor (d) run around the tub
24. 24.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
25. 25.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
26. 26.🛟 Which of these floats on water? (a) a metal key (b) a pebble (c) a glass marble (d) a cork
27. 27.🔍 Which is the odd one out? (a) a metal key (b) an ice cube (c) a cork (d) a ping-pong ball
28. 28.🛟 Which of these floats on water? (a) a steel spoon (b) a feather (c) a coin (d) a metal key
29. 29.🔍 Which is the odd one out? (a) a feather (b) a ball of clay (c) a metal key (d) a coin
30. 30.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is less dense (d) ice is very cold
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to hide the corks (d) to keep children safe
32. 32.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
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 tub of water (b) the kind of clay (c) whether it floats (d) the shape of the clay
34. 34.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) small test objects (d) turmeric powder
36. 36.True or false: a ping-pong ball floats on water. (a) True (b) False
37. 37.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
38. 38.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
39. 39.⚖️ 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) False (b) True
40. 40.⚖️ 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 change it (b) we keep it the same (c) we measure it

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