Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 984 · 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 tub of water is needed for the float-or-sink test. (a) True (b) False
2. 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the amount of clay (c) whether it floats (d) the tub of water
3. 3.True or false: a ping-pong ball sinks in water. (a) False (b) True
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) False (b) True
5. 5.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
6. 6.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a tub of water (c) a balloon (d) a magnet
7. 7.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) a few ice cubes (c) lots of salt stirred in (d) more plain water
8. 8.⚖️ 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) False (b) True
9. 9.True or false: a cork sinks in water. (a) True (b) False
10. 10.🛟 Does a feather float or sink in water? (a) sinks (b) floats
11. 11.True or false: an iron nail sinks in water. (a) True (b) False
12. 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) a magnet
13. 13.True or false: a piece of thermocol sinks in water. (a) False (b) True
14. 14.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a balloon (d) a results table
15. 15.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a mirror (c) a battery cell (d) yeast
16. 16.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
17. 17.🛟 Which of these sinks in water? (a) a coin (b) an empty capped bottle (c) an ice-cream stick (d) a dry leaf
18. 18.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) a tub of water (d) small test objects
20. 20.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) yeast (d) a towel for spills
22. 22.🔍 Which is the odd one out? (a) an iron nail (b) a cork (c) an ice cube (d) an empty capped bottle
23. 23.⚖️ 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 amount of clay (b) whether it floats (c) the shape of the clay (d) the tub of water
24. 24.⚖️ 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
25. 25.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is magnetic (c) ice is less dense (d) ice is very cold
26. 26.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the air above (d) the water
27. 27.🔍 Which is the odd one out? (a) a coin (b) an empty capped bottle (c) a pebble (d) a glass marble
28. 28.🛟 Which of these sinks in water? (a) an ice cube (b) a piece of thermocol (c) an iron nail (d) a feather
29. 29.True or false: yeast is not needed for the float-or-sink test. (a) True (b) False
30. 30.⚖️ 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
31. 31.🛟 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
32. 32.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
33. 33.🛟 Which of these floats on water? (a) a glass marble (b) a pebble (c) a cork (d) a coin
34. 34.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
35. 35.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
36. 36.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it sinks faster (c) it can float (d) it dissolves
37. 37.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
38. 38.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) an iron nail (b) a pebble (c) a cork (d) a glass marble
40. 40.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) leave water on the floor (d) wipe up spills at once

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