Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 99 · 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 of these floats on water? (a) a pebble (b) a coin (c) a metal key (d) a cork
2. 2.True or false: a ping-pong ball sinks in water. (a) False (b) True
3. 3.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it still floats (d) it dissolves
4. 4.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
5. 5.🛟 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 keep children safe (d) to win a prize
6. 6.🛟 Which of these floats on water? (a) a piece of thermocol (b) a coin (c) an iron nail (d) a pebble
7. 7.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
8. 8.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
9. 9.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
10. 10.🧺 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) a battery cell (d) a tub of water
11. 11.⚖️ 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
12. 12.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a towel for spills (c) turmeric powder (d) a results table
13. 13.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) sea water is warm (c) it has a magnet (d) steel is very light
14. 14.⚖️ 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 measure it (b) we change it (c) we keep it the same
15. 15.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is less dense (c) ice is very cold (d) water is sticky
16. 16.⚖️ 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) the amount of clay (c) whether it floats
17. 17.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) the small pebble (d) both of them
18. 18.⚖️ 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 tub of water (b) the kind of clay (c) the amount of clay (d) the shape of the clay
19. 19.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a magnet (c) a tub of water (d) a towel for spills
20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is what we measure. (a) False (b) True
21. 21.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
22. 22.True or false: an empty capped bottle sinks in water. (a) False (b) True
23. 23.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
24. 24.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
25. 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the tub of water (c) the shape of the clay (d) whether it floats
26. 26.🔍 Which is the odd one out? (a) an empty capped bottle (b) an ice cube (c) a cork (d) a glass marble
27. 27.🛟 Does a feather float or sink in water? (a) floats (b) sinks
28. 28.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the air above (d) the cork itself
29. 29.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
30. 30.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
31. 31.True or false: a towel for spills is needed for the float-or-sink test. (a) True (b) False
32. 32.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) a tub of water (d) a balloon
33. 33.🧺 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) a tub of water (d) a balloon
34. 34.🛟 Which of these sinks in water? (a) a metal key (b) a piece of thermocol (c) an empty capped bottle (d) a feather
35. 35.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
36. 36.True or false: a coin sinks in water. (a) True (b) False
37. 37.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a glass marble (c) a feather (d) a ping-pong ball
38. 38.🛟 Does an ice cube float or sink in water? (a) floats (b) sinks
39. 39.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
40. 40.True or false: a coin floats on water. (a) False (b) True

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