Floating and Sinking Experiment Worksheet

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

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