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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 208 · 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.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to win a prize (b) to keep children safe (c) to hide the corks (d) to splash everyone
  2. 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) small test objects (d) a mirror
  3. 3.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
  4. 4.True or false: a ball of clay floats on water. (a) True (b) False
  5. 5.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
  6. 6.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
  7. 7.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a towel for spills (d) a magnet
  8. 8.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
  9. 9.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) the small pebble (c) both of them (d) the big log
  10. 10.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it turns blue (d) it floats higher
  11. 11.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) wipe up spills at once (c) play near a deep pond (d) leave water on the floor
  12. 12.True or false: a piece of thermocol floats on water. (a) False (b) True
  13. 13.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) its hollow shape (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? True or false: whether it floats is kept the same. (a) False (b) True
  15. 15.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
  16. 16.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
  17. 17.True or false: a feather sinks in water. (a) True (b) False
  18. 18.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
  19. 19.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the kind of clay (b) the shape of the clay (c) whether it floats (d) the amount of clay
  20. 20.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) a battery cell (d) a towel for spills
  21. 21.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is less dense (c) water is sticky (d) ice is magnetic
  22. 22.⚖️ 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) True (b) False
  23. 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a tub of water (c) a balloon (d) a results table
  24. 24.🌊 What pushes a floating cork upward? (a) the cork itself (b) the tub (c) the air above (d) the water
  25. 25.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
  26. 26.🔍 Which is the odd one out? (a) a dry leaf (b) a ping-pong ball (c) an empty capped bottle (d) a metal key
  27. 27.⚖️ 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
  28. 28.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
  29. 29.True or false: a glass marble floats on water. (a) False (b) True
  30. 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) True (b) False
  31. 31.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we measure it (b) we change it (c) we keep it the same
  32. 32.🛟 Which of these floats on water? (a) a ball of clay (b) an ice-cream stick (c) a pebble (d) a steel spoon
  33. 33.🛟 Does an ice-cream stick float or sink in water? (a) sinks (b) floats
  34. 34.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) yeast (c) small test objects (d) a battery cell
  35. 35.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
  36. 36.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
  37. 37.True or false: an ice-cream stick floats on water. (a) False (b) True
  38. 38.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a mirror (c) a towel for spills (d) small test objects
  39. 39.🛟 Does a cork float or sink in water? (a) sinks (b) floats
  40. 40.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it turns to stone (d) it sinks faster

Answer key

  1. to keep children safe
  2. a mirror
  3. True
  4. False
  5. False
  6. not needed
  7. a magnet
  8. sinks
  9. the big log
  10. it sinks
  11. wipe up spills at once
  12. True
  13. its hollow shape
  14. False
  15. needed
  16. not needed
  17. False
  18. not needed
  19. whether it floats
  20. a towel for spills
  21. ice is less dense
  22. True
  23. a balloon
  24. the water
  25. not needed
  26. a metal key
  27. True
  28. sinks
  29. False
  30. False
  31. we measure it
  32. an ice-cream stick
  33. floats
  34. small test objects
  35. True
  36. needed
  37. True
  38. a mirror
  39. floats
  40. it can float

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