Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 128 · 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.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
2. 2.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
3. 3.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
4. 4.⚖️ 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) the shape of the clay (c) whether it floats (d) the tub of water
5. 5.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) more plain water (d) lots of salt stirred in
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
7. 7.🛟 Which of these floats on water? (a) a metal key (b) an iron nail (c) an ice-cream stick (d) a glass marble
8. 8.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
9. 9.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
10. 10.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
11. 11.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an ice-cream stick (c) a cork (d) a coin
12. 12.🔍 Which is the odd one out? (a) a feather (b) a metal key (c) a ping-pong ball (d) an ice-cream stick
13. 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a mirror (d) small test objects
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) turmeric powder (d) small test objects
16. 16.🌊 What pushes a floating cork upward? (a) the air above (b) the cork itself (c) the water (d) the tub
17. 17.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
18. 18.🧺 Do we need small test objects 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 results table (b) small test objects (c) a tub of water (d) a magnet
20. 20.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a tub of water (d) a balloon
21. 21.⚖️ 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 measure it (b) we keep it the same (c) we change it
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it sinks (c) it turns blue (d) it melts
23. 23.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a tub of water (d) small test objects
24. 24.🔍 Which is the odd one out? (a) an iron nail (b) a dry leaf (c) a cork (d) a piece of thermocol
25. 25.⚖️ 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
26. 26.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) a steel spoon (d) a ping-pong ball
27. 27.🔍 Which is the odd one out? (a) an empty capped bottle (b) a ping-pong ball (c) a glass marble (d) an ice cube
28. 28.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a magnet (c) yeast (d) a results table
29. 29.🛟 Which of these floats on water? (a) a coin (b) a cork (c) a steel spoon (d) a metal key
30. 30.True or false: an ice-cream stick floats on water. (a) False (b) True
31. 31.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
32. 32.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
33. 33.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
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 change it (b) we keep it the same (c) we measure it
35. 35.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
36. 36.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
37. 37.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
38. 38.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
39. 39.True or false: a dry leaf sinks in water. (a) True (b) False
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a results table (d) yeast

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