Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 539 · 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 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 hide the corks (d) to splash everyone
2. 2.🛟 Does a cork float or sink in water? (a) floats (b) sinks
3. 3.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
4. 4.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
5. 5.🥚 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
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) whether it floats (c) the shape of the clay
7. 7.⚖️ 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
8. 8.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
9. 9.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
10. 10.🧺 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 magnet
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a results table (c) a tub of water (d) small test objects
12. 12.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice-cream stick (c) a piece of thermocol (d) a ball of clay
13. 13.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a balloon (c) a tub of water (d) a towel for spills
15. 15.🧊 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
16. 16.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
17. 17.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) both of them (d) the big log
18. 18.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
19. 19.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it turns to stone (d) it dissolves
20. 20.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
21. 21.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it sinks (d) it dissolves
22. 22.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a coin (c) an empty capped bottle (d) a cork
23. 23.⚖️ 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 keep it the same (c) we change it
24. 24.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a ping-pong ball (c) an ice cube (d) a metal key
25. 25.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a pebble (c) an ice cube (d) a piece of thermocol
26. 26.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the water (d) the air above
27. 27.🔮 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
28. 28.True or false: a feather sinks in water. (a) False (b) True
29. 29.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
31. 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) small test objects (c) a towel for spills (d) a tub of water
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a mirror (c) a towel for spills (d) a tub of water
33. 33.True or false: a ping-pong ball floats on water. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) a cork (b) a piece of thermocol (c) a steel spoon (d) a dry leaf
35. 35.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the amount of clay (c) the kind of clay (d) the shape of the clay
36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a balloon (c) a tub of water (d) small test objects
37. 37.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
38. 38.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
39. 39.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
40. 40.True or false: a pebble floats on water. (a) False (b) True

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