Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 936 · 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.⚖️ 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 amount of clay (c) the shape of the clay
2. 2.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
3. 3.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) a ball of clay (d) a dry leaf
4. 4.🛟 Does a cork float or sink in water? (a) sinks (b) floats
5. 5.🧊 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
6. 6.🛟 Which of these sinks in water? (a) a cork (b) an ice cube (c) an empty capped bottle (d) a metal key
7. 7.True or false: a metal key sinks in water. (a) True (b) False
8. 8.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
9. 9.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🔍 Which is the odd one out? (a) a ball of clay (b) a piece of thermocol (c) a coin (d) a glass marble
12. 12.⚖️ 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
13. 13.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a battery cell (d) a balloon
15. 15.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) both of them (c) neither of them (d) the big log
16. 16.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
17. 17.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
18. 18.⚖️ 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 keep it the same (c) we measure it
19. 19.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
20. 20.⚖️ 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 tub of water (c) the shape of the clay
21. 21.🔍 Which is the odd one out? (a) a ping-pong ball (b) a piece of thermocol (c) a coin (d) a dry leaf
22. 22.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it dissolves (d) it sinks
23. 23.True or false: a piece of thermocol sinks in water. (a) True (b) False
24. 24.🌊 What pushes a floating cork upward? (a) the tub (b) the air above (c) the water (d) the cork itself
25. 25.True or false: a ping-pong ball sinks in water. (a) True (b) False
26. 26.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
27. 27.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
28. 28.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
29. 29.🛟 Which of these sinks in water? (a) a feather (b) a ping-pong ball (c) an ice-cream stick (d) a glass marble
30. 30.True or false: a dry leaf floats on water. (a) True (b) False
31. 31.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
32. 32.🧺 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
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a results table (d) a balloon
34. 34.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice-cream stick (c) a steel spoon (d) a cork
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) a tub of water (d) a balloon
36. 36.🧺 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 tub of water (d) a mirror
37. 37.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
38. 38.⚖️ 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) False (b) True
39. 39.🧺 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 magnet (d) a results table
40. 40.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False

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