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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 185 · 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 dry leaf floats on water. (a) True (b) False
  2. 2.🛟 Which of these floats on water? (a) a pebble (b) a coin (c) a cork (d) a glass marble
  3. 3.🛟 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
  4. 4.⚖️ 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
  5. 5.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float
  6. 6.True or false: a piece of thermocol floats on water. (a) False (b) True
  7. 7.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the cork itself (d) the tub
  8. 8.🛟 Which of these floats on water? (a) a steel spoon (b) a glass marble (c) a ping-pong ball (d) an iron nail
  9. 9.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
  10. 10.True or false: an ice-cream stick sinks in water. (a) True (b) False
  11. 11.🛟 Does a feather float or sink in water? (a) floats (b) sinks
  12. 12.🛟 Does a coin float or sink in water? (a) sinks (b) floats
  13. 13.⚖️ 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) False (b) True
  14. 14.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) a battery cell (c) a magnet (d) a results table
  15. 15.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
  16. 16.True or false: an iron nail sinks in water. (a) True (b) False
  17. 17.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
  18. 18.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the small pebble (d) the big log
  19. 19.🔍 Which is the odd one out? (a) a cork (b) a piece of thermocol (c) a feather (d) an iron nail
  20. 20.🔍 Which is the odd one out? (a) a steel spoon (b) a cork (c) an iron nail (d) a pebble
  21. 21.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it melts (d) it sinks
  22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a towel for spills (d) a balloon
  23. 23.🔍 Which is the odd one out? (a) a feather (b) a pebble (c) a cork (d) an empty capped bottle
  24. 24.⚖️ 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
  25. 25.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
  26. 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the kind of clay”? (a) we change it (b) we measure it (c) we keep it the same
  27. 27.True or false: a metal key sinks in water. (a) False (b) True
  28. 28.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a mirror (c) a tub of water (d) a towel for spills
  29. 29.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it sinks (c) it still floats (d) it turns white
  30. 30.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a magnet (d) a towel for spills
  31. 31.🛟 Does a cork float or sink in water? (a) floats (b) sinks
  32. 32.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
  33. 33.True or false: an ice-cream stick floats on water. (a) True (b) False
  34. 34.⚖️ 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 kind of clay (c) the tub of water (d) the amount of clay
  35. 35.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a balloon (d) small test objects
  36. 36.🔍 Which is the odd one out? (a) an iron nail (b) a piece of thermocol (c) a pebble (d) a coin
  37. 37.⚖️ 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) True (b) False
  38. 38.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) turmeric powder (d) yeast
  39. 39.🔍 Which is the odd one out? (a) an ice-cream stick (b) a metal key (c) a cork (d) an ice cube
  40. 40.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed

Answer key

  1. True
  2. a cork
  3. wipe up spills at once
  4. True
  5. it can float
  6. True
  7. the water
  8. a ping-pong ball
  9. needed
  10. False
  11. floats
  12. sinks
  13. True
  14. a results table
  15. False
  16. True
  17. True
  18. the big log
  19. an iron nail
  20. a cork
  21. it sinks
  22. a balloon
  23. a pebble
  24. we measure it
  25. not needed
  26. we keep it the same
  27. True
  28. a mirror
  29. it still floats
  30. a magnet
  31. floats
  32. needed
  33. True
  34. whether it floats
  35. small test objects
  36. a piece of thermocol
  37. True
  38. a towel for spills
  39. a metal key
  40. not needed

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