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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 601 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.True or false: a ping-pong ball sinks in water. (a) False (b) True
  2. 2.True or false: a glass marble floats on water. (a) True (b) False
  3. 3.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) leave water on the floor (d) wipe up spills at once
  4. 4.⚖️ 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) whether it floats (d) the kind of clay
  5. 5.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
  6. 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a balloon (c) a results table (d) small test objects
  7. 7.🛟 Which of these floats on water? (a) a pebble (b) a piece of thermocol (c) a ball of clay (d) a coin
  8. 8.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) it has a magnet (d) its hollow shape
  9. 9.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
  10. 10.⚖️ 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
  11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) small test objects (d) a results table
  12. 12.True or false: a ping-pong ball floats on water. (a) False (b) True
  13. 13.⚖️ 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 kind of clay (c) whether it floats
  14. 14.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
  15. 15.True or false: an ice-cream stick floats on water. (a) False (b) True
  16. 16.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
  17. 17.⚖️ 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
  18. 18.True or false: a steel spoon sinks in water. (a) True (b) False
  19. 19.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
  20. 20.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
  21. 21.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
  22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a towel for spills (d) a magnet
  23. 23.🔮 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
  24. 24.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
  25. 25.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
  26. 26.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
  27. 27.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) False (b) True
  28. 28.True or false: an empty capped bottle floats on water. (a) False (b) True
  29. 29.🧺 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 mirror (d) a tub of water
  30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) turmeric powder (c) small test objects (d) a tub of water
  31. 31.True or false: a mirror is not needed for the float-or-sink test. (a) False (b) True
  32. 32.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a tub of water (c) small test objects (d) a towel for spills
  33. 33.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
  34. 34.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
  35. 35.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
  36. 36.True or false: a coin sinks in water. (a) False (b) True
  37. 37.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
  38. 38.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it floats (d) it bounces up
  39. 39.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) lots of salt stirred in (d) a few ice cubes
  40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a results table (c) a tub of water (d) a battery cell

Answer key

  1. False
  2. False
  3. wipe up spills at once
  4. whether it floats
  5. not needed
  6. a balloon
  7. a piece of thermocol
  8. its hollow shape
  9. sinks
  10. True
  11. a magnet
  12. True
  13. the kind of clay
  14. True
  15. True
  16. False
  17. we keep it the same
  18. True
  19. needed
  20. False
  21. sinks
  22. a magnet
  23. it sinks
  24. floats
  25. True
  26. False
  27. True
  28. True
  29. a mirror
  30. turmeric powder
  31. True
  32. a battery cell
  33. sinks
  34. False
  35. True
  36. True
  37. it still floats
  38. it sinks
  39. lots of salt stirred in
  40. a battery cell

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