Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 42 · 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 ball of clay sinks in water. (a) False (b) True
2. 2.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
3. 3.🔮 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
4. 4.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) small test objects (c) a towel for spills (d) a tub of water
5. 5.⚖️ 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 kind of clay (b) the amount of clay (c) the tub of water (d) the shape of the clay
6. 6.🛟 Does a coin float or sink in water? (a) floats (b) sinks
7. 7.🛟 Which of these sinks in water? (a) an ice cube (b) a feather (c) a ball of clay (d) an ice-cream stick
8. 8.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
9. 9.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
10. 10.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) wipe up spills at once (d) play near a deep pond
11. 11.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) small test objects (c) a results table (d) turmeric powder
12. 12.⚖️ 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
13. 13.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a magnet (d) a results table
14. 14.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
15. 15.🧊 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
16. 16.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
17. 17.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it bounces up (d) it floats
18. 18.True or false: a glass marble floats on water. (a) False (b) True
19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) whether it floats (c) the shape of the clay (d) the tub of water
20. 20.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
21. 21.⚖️ 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
22. 22.🛟 Which of these floats on water? (a) a metal key (b) an ice cube (c) a coin (d) a pebble
23. 23.🛟 Which of these sinks in water? (a) a dry leaf (b) an empty capped bottle (c) a piece of thermocol (d) a metal key
24. 24.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
25. 25.True or false: an ice cube floats on water. (a) False (b) True
26. 26.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a tub of water (d) yeast
27. 27.🔍 Which is the odd one out? (a) a feather (b) a glass marble (c) a coin (d) an iron nail
28. 28.⚖️ 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 measure it (c) we keep it the same
29. 29.🛟 Does a ping-pong ball float or sink in water? (a) floats (b) sinks
30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a magnet (d) small test objects
31. 31.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to splash everyone (c) to win a prize (d) to keep children safe
32. 32.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it still floats (c) it turns white (d) it sinks
33. 33.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a dry leaf (d) a steel spoon
34. 34.🔍 Which is the odd one out? (a) a metal key (b) a glass marble (c) a pebble (d) an empty capped bottle
35. 35.True or false: a metal key floats on water. (a) False (b) True
36. 36.True or false: a steel spoon sinks in water. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) a ping-pong ball (d) an iron nail
38. 38.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the tub (d) the air above
39. 39.🔍 Which is the odd one out? (a) a ping-pong ball (b) a metal key (c) a steel spoon (d) a coin
40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a magnet (d) a results table

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