Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 359 · 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.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
2. 2.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
3. 3.🛟 Which of these floats on water? (a) a glass marble (b) a steel spoon (c) a coin (d) a dry leaf
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a results table (d) a balloon
6. 6.🔮 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
7. 7.⚖️ 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
8. 8.True or false: a ping-pong ball floats on water. (a) True (b) False
9. 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) whether it floats (c) the tub of water (d) the kind of clay
10. 10.🧊 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
11. 11.🛟 Which of these floats on water? (a) a coin (b) a ball of clay (c) a piece of thermocol (d) a pebble
12. 12.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
13. 13.True or false: a coin floats on water. (a) False (b) True
14. 14.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) turmeric powder (d) a mirror
16. 16.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
17. 17.🔍 Which is the odd one out? (a) a glass marble (b) an ice-cream stick (c) a cork (d) an ice cube
18. 18.🛟 Which of these floats on water? (a) a feather (b) a pebble (c) a metal key (d) a steel spoon
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) small test objects (d) a towel for spills
20. 20.⚖️ 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
21. 21.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it floats (d) it dissolves
22. 22.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
23. 23.🛟 Which of these sinks in water? (a) a metal key (b) a piece of thermocol (c) an ice-cream stick (d) an ice cube
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 magnet
25. 25.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a towel for spills (d) a results table
26. 26.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
27. 27.True or false: a steel spoon floats on water. (a) True (b) False
28. 28.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
29. 29.🛟 Does a feather float or sink in water? (a) sinks (b) floats
30. 30.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) it has a magnet (c) its hollow shape (d) sea water is warm
31. 31.⚖️ 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 change it (b) we keep it the same (c) we measure it
32. 32.⚖️ 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 measure it (b) we change it (c) we keep it the same
33. 33.🥚 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
34. 34.⚖️ 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
35. 35.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
36. 36.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
37. 37.🧺 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 mirror (d) a towel for spills
38. 38.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
39. 39.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
40. 40.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True

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