Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 232 · 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) water is sticky (b) ice is less dense (c) ice is magnetic (d) ice is very cold
2. 2.🧺 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) yeast (d) a tub of water
3. 3.⚖️ 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
4. 4.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) lots of salt stirred in (d) more plain water
5. 5.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice-cream stick (c) a steel spoon (d) a feather
6. 6.🔮 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
7. 7.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
8. 8.🛟 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
9. 9.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
10. 10.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
11. 11.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) the big log (d) both of them
12. 12.🔍 Which is the odd one out? (a) a dry leaf (b) an ice-cream stick (c) a pebble (d) a ping-pong ball
13. 13.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a towel for spills (c) yeast (d) turmeric powder
15. 15.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
16. 16.🧺 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 magnet (d) a towel for spills
17. 17.🛟 Which of these floats on water? (a) a coin (b) a pebble (c) a steel spoon (d) an ice-cream stick
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.True or false: a cork floats on water. (a) False (b) True
20. 20.⚖️ 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 kind of clay (c) whether it floats (d) the amount of clay
21. 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) True (b) False
22. 22.🛟 Which of these sinks in water? (a) a coin (b) a ping-pong ball (c) an ice cube (d) a piece of thermocol
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) run around the tub (d) leave water on the floor
24. 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a results table (d) a balloon
25. 25.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the tub (d) the water
26. 26.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
27. 27.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
28. 28.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
29. 29.True or false: a mirror is not needed for the float-or-sink test. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a piece of thermocol (d) a metal key
31. 31.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) small test objects (c) a tub of water (d) a balloon
32. 32.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
33. 33.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
34. 34.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
35. 35.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
36. 36.🧺 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) turmeric powder
37. 37.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
38. 38.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
39. 39.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a tub of water (d) small test objects
40. 40.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float

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