Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 476 · 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 ice-cream stick floats on water. (a) True (b) False
2. 2.⚖️ 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 amount of clay (c) the shape of the clay (d) the kind of clay
3. 3.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
4. 4.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a coin (d) a dry leaf
5. 5.🥚 A fresh egg sinks in plain water. What makes it float? (a) a little shaking (b) more plain water (c) lots of salt stirred in (d) a few ice cubes
6. 6.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
7. 7.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
8. 8.⚖️ 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
9. 9.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it bounces up (c) it floats (d) it dissolves
10. 10.True or false: a metal key sinks in water. (a) True (b) False
11. 11.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
12. 12.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice cube (c) a cork (d) a ball of clay
13. 13.True or false: a ball of clay floats on water. (a) False (b) True
14. 14.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it melts (d) it sinks
15. 15.🧺 Which of these is not needed for the float-or-sink test? (a) yeast (b) a tub of water (c) small test objects (d) a results table
16. 16.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) small test objects (d) a battery cell
17. 17.⚖️ 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 keep it the same (b) we change it (c) we measure it
18. 18.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) neither of them (c) the small pebble (d) the big log
19. 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a balloon (c) a tub of water (d) a towel for spills
20. 20.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) a glass marble (d) an empty capped bottle
21. 21.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) turmeric powder (d) small test objects
22. 22.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
23. 23.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
24. 24.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
25. 25.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) wipe up spills at once (d) play near a deep pond
26. 26.🛟 Which of these floats on water? (a) a glass marble (b) a ball of clay (c) a feather (d) a coin
27. 27.⚖️ 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 measure it (c) we keep it the same
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 keep it the same (b) we change it (c) we measure it
29. 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the tub of water (b) the shape of the clay (c) whether it floats
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 kind of clay (b) whether it floats (c) the shape of the clay
31. 31.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False
32. 32.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
33. 33.🔍 Which is the odd one out? (a) a coin (b) a pebble (c) a piece of thermocol (d) a ball of clay
34. 34.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
35. 35.🛟 Which of these floats on water? (a) a metal key (b) a coin (c) an iron nail (d) a cork
36. 36.⚖️ 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 shape of the clay (d) the amount of clay
37. 37.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
38. 38.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it turns to stone (d) it dissolves
39. 39.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
40. 40.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) an ice cube (d) a steel spoon

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