Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 910 · 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: an iron nail sinks in water. (a) False (b) True
2. 2.🛟 Which of these sinks in water? (a) an empty capped bottle (b) an ice-cream stick (c) a piece of thermocol (d) a metal key
3. 3.🔍 Which is the odd one out? (a) an empty capped bottle (b) an iron nail (c) a pebble (d) a coin
4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a results table (c) small test objects (d) a towel for spills
5. 5.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it sinks faster (d) it can float
6. 6.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
7. 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) turmeric powder (c) a towel for spills (d) a tub of water
8. 8.🛟 Which of these floats on water? (a) a pebble (b) an iron nail (c) a metal key (d) an empty capped bottle
9. 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) small test objects (d) yeast
10. 10.⚖️ 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
11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
12. 12.⚖️ 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
13. 13.🛟 Which of these floats on water? (a) a metal key (b) a piece of thermocol (c) a coin (d) a steel spoon
14. 14.⚖️ 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 measure it (c) we keep it the same
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) turmeric powder (b) small test objects (c) a results table (d) a towel for spills
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a results table (d) a magnet
17. 17.⚖️ 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 tub of water
18. 18.True or false: a coin floats on water. (a) False (b) True
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a results table (d) a mirror
20. 20.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) an empty capped bottle (b) a dry leaf (c) an ice cube (d) an iron nail
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 kind of clay (b) the amount of clay (c) whether it floats (d) the shape of the clay
24. 24.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
25. 25.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to splash everyone (d) to win a prize
26. 26.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
27. 27.🛟 Does a cork float or sink in water? (a) sinks (b) floats
28. 28.True or false: a dry leaf floats on water. (a) False (b) True
29. 29.🛟 Which of these sinks in water? (a) a glass marble (b) a piece of thermocol (c) a cork (d) a dry leaf
30. 30.True or false: a ball of clay floats on water. (a) False (b) True
31. 31.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
32. 32.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it still floats (c) it dissolves (d) it turns white
33. 33.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
34. 34.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) more plain water (d) a little shaking
35. 35.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
36. 36.🔍 Which is the odd one out? (a) an empty capped bottle (b) a piece of thermocol (c) a ping-pong ball (d) a steel spoon
37. 37.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a balloon (d) a tub of water
39. 39.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
40. 40.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a battery cell (c) a mirror (d) a results table

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