Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 250 · 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 is the odd one out? (a) a ball of clay (b) an iron nail (c) a metal key (d) a piece of thermocol
2. 2.⚖️ 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
3. 3.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it turns white (c) it sinks (d) it dissolves
4. 4.True or false: a pebble sinks in water. (a) True (b) False
5. 5.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it sinks (d) it dissolves
6. 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) True (b) False
7. 7.True or false: an ice-cream stick floats on water. (a) False (b) True
8. 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
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) yeast (d) a towel for spills
10. 10.🛟 Which of these floats on water? (a) a pebble (b) an ice-cream stick (c) a metal key (d) a coin
11. 11.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
12. 12.🛟 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
13. 13.🛟 Which of these sinks in water? (a) a coin (b) a piece of thermocol (c) a feather (d) an empty capped bottle
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) a cork (b) a pebble (c) a metal key (d) a steel spoon
16. 16.True or false: a metal key sinks in water. (a) True (b) False
17. 17.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) a balloon (d) a results table
18. 18.⚖️ 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 keep it the same (b) we change it (c) we measure it
19. 19.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
20. 20.🌊 What pushes a floating cork upward? (a) the air above (b) the tub (c) the water (d) the cork itself
21. 21.🧺 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 balloon
22. 22.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it sinks (b) it melts (c) it floats higher (d) it turns blue
23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
24. 24.🛟 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 keep children safe (d) to hide the corks
25. 25.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) the small pebble (d) neither of them
26. 26.🛟 Which of these floats on water? (a) a dry leaf (b) a pebble (c) an iron nail (d) a coin
27. 27.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a tub of water (d) a balloon
28. 28.⚖️ 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 tub of water (c) whether it floats (d) the shape of the clay
29. 29.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
30. 30.🛟 Which of these sinks in water? (a) an ice cube (b) a piece of thermocol (c) a feather (d) an iron nail
31. 31.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a towel for spills (c) a tub of water (d) a results table
33. 33.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
34. 34.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a results table (c) a mirror (d) a magnet
35. 35.🧺 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 towel for spills (d) a tub of water
36. 36.🧺 Which of these is not needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a results table (d) a towel for spills
37. 37.True or false: an empty capped bottle floats on water. (a) False (b) True
38. 38.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) more plain water (c) a few ice cubes (d) a little shaking
39. 39.True or false: an ice cube floats on water. (a) True (b) False
40. 40.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed

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