Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 279 · 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 cork floats on water. (a) False (b) True
2. 2.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) turmeric powder (c) a magnet (d) yeast
3. 3.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it dissolves (d) it can float
4. 4.🛟 Which of these sinks in water? (a) a feather (b) a cork (c) an ice-cream stick (d) an iron nail
5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) a balloon (d) a tub of water
6. 6.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it sinks (c) it floats (d) it bounces up
7. 7.⚖️ 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
8. 8.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) steel is very light (d) its hollow shape
9. 9.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) turmeric powder (d) small test objects
10. 10.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the water (d) the air above
11. 11.⚖️ 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 measure it (b) we keep it the same (c) we change it
12. 12.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) lots of salt stirred in (d) more plain water
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the shape of the clay (c) the tub of water (d) the amount of clay
14. 14.True or false: a piece of thermocol sinks in water. (a) False (b) True
15. 15.True or false: a metal key floats on water. (a) True (b) False
16. 16.⚖️ 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 measure it (b) we keep it the same (c) we change it
17. 17.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
18. 18.True or false: a ball of clay floats on water. (a) True (b) False
19. 19.🛟 Which of these floats on water? (a) an ice cube (b) a metal key (c) a coin (d) a steel spoon
20. 20.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
21. 21.⚖️ 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
22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) turmeric powder (d) small test objects
23. 23.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
24. 24.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
25. 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a towel for spills (c) small test objects (d) a tub of water
26. 26.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
27. 27.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
28. 28.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it turns white (d) it sinks
29. 29.⚖️ 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) True (b) False
30. 30.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
31. 31.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a towel for spills (c) a results table (d) a tub of water
33. 33.⚖️ 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) False (b) True
34. 34.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
35. 35.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a results table (d) a magnet
37. 37.⚖️ 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) True (b) False
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a battery cell (d) a tub of water
39. 39.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
40. 40.⚖️ 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

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