Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 505 · 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.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) turmeric powder (c) a towel for spills (d) a magnet
2. 2.True or false: a steel spoon sinks in water. (a) False (b) True
3. 3.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
4. 4.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it turns white (d) it still floats
5. 5.🔍 Which is the odd one out? (a) a steel spoon (b) a ball of clay (c) a piece of thermocol (d) a metal key
6. 6.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the cork itself (d) the tub
7. 7.⚖️ 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
8. 8.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it sinks (d) it turns blue
9. 9.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a results table (c) a towel for spills (d) a tub of water
10. 10.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) a ball of clay (d) a cork
11. 11.🛟 Does a cork float or sink in water? (a) sinks (b) floats
12. 12.True or false: an ice cube sinks in water. (a) False (b) True
13. 13.🛟 Which of these sinks in water? (a) a cork (b) a ping-pong ball (c) a coin (d) a piece of thermocol
14. 14.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
15. 15.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
16. 16.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to splash everyone (c) to hide the corks (d) to keep children safe
17. 17.⚖️ 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
18. 18.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
19. 19.🔍 Which is the odd one out? (a) a feather (b) a steel spoon (c) a coin (d) a glass marble
20. 20.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a tub of water (c) a magnet (d) a balloon
21. 21.🔍 Which is the odd one out? (a) an empty capped bottle (b) a metal key (c) a ping-pong ball (d) a piece of thermocol
22. 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) False (b) True
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) whether it floats (c) the shape of the clay
24. 24.True or false: a ball of clay sinks in water. (a) True (b) False
25. 25.⚖️ 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 shape of the clay (c) the tub of water (d) the kind of clay
26. 26.True or false: a results table is not needed for the float-or-sink test. (a) False (b) True
27. 27.🛟 Which of these sinks in water? (a) an empty capped bottle (b) a dry leaf (c) a metal key (d) a feather
28. 28.⚖️ 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
29. 29.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) True (b) False
31. 31.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
32. 32.True or false: a balloon is needed for the float-or-sink test. (a) True (b) False
33. 33.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a balloon (c) small test objects (d) a tub of water
34. 34.🧺 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
35. 35.⚖️ 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
36. 36.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
37. 37.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) a few ice cubes (d) more plain water
38. 38.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a results table (d) small test objects
39. 39.🔍 Which is the odd one out? (a) a ping-pong ball (b) an ice-cream stick (c) a glass marble (d) a feather
40. 40.True or false: a metal key floats on water. (a) True (b) False

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