Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 978 · 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.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
2. 2.🔍 Which is the odd one out? (a) a steel spoon (b) a piece of thermocol (c) a cork (d) a ping-pong ball
3. 3.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) the big log (d) neither of them
4. 4.⚖️ 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 measure it (c) we keep it the same
5. 5.🔍 Which is the odd one out? (a) a ping-pong ball (b) a steel spoon (c) a ball of clay (d) a metal key
6. 6.⚖️ 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
7. 7.🛟 Which of these floats on water? (a) a glass marble (b) a steel spoon (c) an ice-cream stick (d) a coin
8. 8.True or false: a ping-pong ball floats on water. (a) True (b) False
9. 9.🛟 Which of these sinks in water? (a) a feather (b) an ice cube (c) an iron nail (d) a cork
10. 10.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a mirror (c) a results table (d) yeast
11. 11.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
12. 12.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
13. 13.True or false: a dry leaf floats on water. (a) True (b) False
14. 14.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) whether it floats (c) the tub of water (d) the shape of the clay
16. 16.⚖️ 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
17. 17.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a tub of water (c) a results table (d) a towel for spills
18. 18.🛟 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) run around the tub (d) wipe up spills at once
19. 19.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is very cold (c) ice is magnetic (d) water is sticky
20. 20.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
21. 21.🧺 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) a mirror (d) small test objects
22. 22.🛟 Which of these floats on water? (a) a ball of clay (b) a dry leaf (c) a glass marble (d) a steel spoon
23. 23.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
24. 24.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
25. 25.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) more plain water (d) lots of salt stirred in
26. 26.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to splash everyone (d) to hide the corks
27. 27.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) its hollow shape (d) steel is very light
28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a battery cell (c) small test objects (d) a towel for spills
29. 29.True or false: a metal key sinks in water. (a) False (b) True
30. 30.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) turmeric powder (d) yeast
31. 31.🛟 Which of these sinks in water? (a) a coin (b) a dry leaf (c) an empty capped bottle (d) a piece of thermocol
32. 32.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
33. 33.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) a pebble (b) a feather (c) an ice cube (d) an empty capped bottle
35. 35.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
36. 36.🔍 Which is the odd one out? (a) a metal key (b) a feather (c) an ice cube (d) an empty capped bottle
37. 37.True or false: an ice-cream stick floats on water. (a) False (b) True
38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a battery cell (c) a mirror (d) small test objects
39. 39.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
40. 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it turns blue (c) it floats higher (d) it melts

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