Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 499 · 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 magnetic (b) ice is very cold (c) ice is less dense (d) water is sticky
2. 2.⚖️ 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
3. 3.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
4. 4.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
5. 5.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a magnet (d) small test objects
6. 6.🧺 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) a towel for spills
7. 7.🔍 Which is the odd one out? (a) a feather (b) an ice cube (c) a ping-pong ball (d) a coin
8. 8.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) an ice-cream stick (b) an empty capped bottle (c) a pebble (d) a piece of thermocol
10. 10.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it can float (d) it sinks faster
11. 11.🧺 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) a battery cell (d) a towel for spills
12. 12.⚖️ 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 tub of water (c) whether it floats
13. 13.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
14. 14.🛟 Which of these sinks in water? (a) an ice-cream stick (b) an iron nail (c) an ice cube (d) a cork
15. 15.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
16. 16.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
17. 17.🛟 Does a feather float or sink in water? (a) floats (b) sinks
18. 18.True or false: an ice-cream stick floats on water. (a) True (b) False
19. 19.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) small test objects (d) turmeric powder
21. 21.True or false: a piece of thermocol floats on water. (a) True (b) False
22. 22.⚖️ 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
23. 23.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
24. 24.⚖️ 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 shape of the clay (b) the amount of clay (c) the kind of clay (d) whether it floats
25. 25.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
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 change it (b) we measure it (c) we keep it the same
28. 28.🛟 Which of these floats on water? (a) a metal key (b) an iron nail (c) a ball of clay (d) an ice-cream stick
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the amount of clay
30. 30.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) yeast (d) a tub of water
31. 31.🔍 Which is the odd one out? (a) a metal key (b) a ping-pong ball (c) a dry leaf (d) a feather
32. 32.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
33. 33.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) leave water on the floor (c) wipe up spills at once (d) run around the tub
34. 34.🥚 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
35. 35.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the water (d) the air above
36. 36.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to hide the corks (c) to keep children safe (d) to splash everyone
37. 37.⚖️ 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 change it (b) we measure it (c) we keep it the same
38. 38.⚖️ 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
39. 39.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it dissolves (c) it sinks (d) it still floats
40. 40.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True

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