Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 766 · 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.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) ice is magnetic (d) water is sticky
2. 2.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
3. 3.⚖️ 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
4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a towel for spills
6. 6.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
7. 7.⚖️ 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 keep it the same (c) we measure it
8. 8.🔮 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
9. 9.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a battery cell (d) a balloon
11. 11.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) a steel spoon (d) a piece of thermocol
12. 12.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) turmeric powder (d) a towel for spills
13. 13.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
14. 14.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
15. 15.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a results table (d) small test objects
18. 18.🛟 Which of these sinks in water? (a) a dry leaf (b) a ball of clay (c) a feather (d) a cork
19. 19.🔮 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
20. 20.True or false: an empty capped bottle sinks in water. (a) True (b) False
21. 21.🛟 Which of these sinks in water? (a) a feather (b) a steel spoon (c) a dry leaf (d) an empty capped bottle
22. 22.⚖️ 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 change it (c) we measure it
23. 23.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
24. 24.⚖️ 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) whether it floats (c) the amount of clay
25. 25.⚖️ 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
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a results table (d) a battery cell
27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) True (b) False
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a results table (d) small test objects
29. 29.⚖️ 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
30. 30.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
31. 31.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
32. 32.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
33. 33.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
34. 34.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it dissolves (d) it sinks
35. 35.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
36. 36.⚖️ 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
37. 37.🛟 Which of these floats on water? (a) a glass marble (b) a ball of clay (c) a cork (d) a steel spoon
38. 38.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) a cork (d) a coin
39. 39.True or false: a coin sinks in water. (a) False (b) True
40. 40.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed

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