Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 211 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a battery cell (c) a tub of water (d) small test objects
2. 2.🛟 Which of these floats on water? (a) a piece of thermocol (b) a ball of clay (c) an iron nail (d) a steel spoon
3. 3.⚖️ 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) True (b) False
4. 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) whether it floats (b) the tub of water (c) the shape of the clay (d) the amount of clay
5. 5.🧺 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 mirror
6. 6.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to hide the corks (c) to win a prize (d) to keep children safe
7. 7.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats
8. 8.True or false: yeast is needed for the float-or-sink test. (a) True (b) False
9. 9.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it floats (c) it bounces up (d) it sinks
10. 10.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) small test objects (c) a results table (d) a towel for spills
12. 12.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
13. 13.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
14. 14.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
15. 15.⚖️ 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
16. 16.🧊 Why does an ice cube float on water? (a) ice is very cold (b) water is sticky (c) ice is magnetic (d) ice is less dense
17. 17.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
18. 18.🛟 Which of these sinks in water? (a) an ice cube (b) a feather (c) a cork (d) a glass marble
19. 19.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
20. 20.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
21. 21.⚖️ 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 kind of clay (c) the tub of water (d) the shape of the clay
22. 22.True or false: a ping-pong ball sinks in water. (a) False (b) True
23. 23.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a little shaking (c) more plain water (d) a few ice cubes
24. 24.⚖️ 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
25. 25.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
26. 26.🔍 Which is the odd one out? (a) a piece of thermocol (b) a ping-pong ball (c) a pebble (d) an ice cube
27. 27.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
29. 29.True or false: a feather floats on water. (a) True (b) False
30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the shape of the clay (b) whether it floats (c) the amount of clay
31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is what we measure. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) an ice-cream stick (b) a feather (c) an iron nail (d) an ice cube
33. 33.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
35. 35.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a mirror (c) a tub of water (d) a results table
36. 36.🛟 Which of these sinks in water? (a) a cork (b) a ping-pong ball (c) a ball of clay (d) an empty capped bottle
37. 37.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) a tub of water (d) a results table
38. 38.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
39. 39.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) a ball of clay (d) a cork
40. 40.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed

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