Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 480 · 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.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) turmeric powder (c) a balloon (d) a towel for spills
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a mirror (c) a tub of water (d) yeast
3. 3.🛟 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 keep children safe (d) to hide the corks
4. 4.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) sea water is warm (d) its hollow shape
5. 5.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is magnetic (d) ice is very cold
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
7. 7.⚖️ 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
8. 8.🛟 Does a cork float or sink in water? (a) sinks (b) floats
9. 9.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
10. 10.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
11. 11.🔮 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
12. 12.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a battery cell (c) a results table (d) a tub of water
13. 13.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) a balloon
15. 15.⚖️ 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
16. 16.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
19. 19.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.🔍 Which is the odd one out? (a) an ice-cream stick (b) a ping-pong ball (c) a cork (d) a pebble
22. 22.⚖️ 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
23. 23.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
24. 24.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
25. 25.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it melts (d) it floats higher
26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) yeast (c) a results table (d) a towel for spills
27. 27.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) a little shaking (d) more plain water
28. 28.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) a glass marble (d) a feather
29. 29.True or false: a steel spoon sinks in water. (a) False (b) True
30. 30.🧺 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) small test objects (d) turmeric powder
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
32. 32.🛟 Which of these sinks in water? (a) a pebble (b) a piece of thermocol (c) a ping-pong ball (d) an empty capped bottle
33. 33.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it sinks (d) it bounces up
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the shape of the clay (c) whether it floats (d) the kind of clay
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) True (b) False
36. 36.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
37. 37.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
38. 38.🔍 Which is the odd one out? (a) a piece of thermocol (b) a metal key (c) an ice-cream stick (d) a feather
39. 39.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a battery cell (c) a balloon (d) small test objects

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