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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 739 · 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.⚖️ 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 amount of clay (b) the kind of clay (c) the shape of the clay (d) whether it floats
  2. 2.True or false: a dry leaf floats on water. (a) True (b) False
  3. 3.True or false: a ping-pong ball floats on water. (a) True (b) False
  4. 4.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) small test objects (d) a results table
  5. 5.🛟 Does a metal key float or sink in water? (a) sinks (b) floats
  6. 6.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) turmeric powder (d) a mirror
  7. 7.⚖️ 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 keep it the same (c) we change it
  8. 8.🧺 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) a towel for spills
  9. 9.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
  10. 10.True or false: an ice-cream stick floats on water. (a) True (b) False
  11. 11.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
  12. 12.True or false: a pebble sinks in water. (a) False (b) True
  13. 13.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
  14. 14.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
  15. 15.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
  16. 16.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
  17. 17.⚖️ 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
  18. 18.🌊 What pushes a floating cork upward? (a) the air above (b) the water (c) the tub (d) the cork itself
  19. 19.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
  20. 20.🔮 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
  21. 21.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
  22. 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a results table (c) a mirror (d) small test objects
  23. 23.⚖️ 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 change it (b) we measure it (c) we keep it the same
  24. 24.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) an ice-cream stick (d) a ping-pong ball
  25. 25.🛟 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
  26. 26.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) yeast (c) a towel for spills (d) small test objects
  27. 27.True or false: an iron nail floats on water. (a) True (b) False
  28. 28.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) sea water is warm (c) its hollow shape (d) steel is very light
  29. 29.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
  30. 30.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
  31. 31.⚖️ 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 measure it (b) we change it (c) we keep it the same
  32. 32.🛟 Which of these floats on water? (a) a cork (b) a steel spoon (c) a ball of clay (d) a glass marble
  33. 33.🛟 Which of these sinks in water? (a) a dry leaf (b) a feather (c) a cork (d) an iron nail
  34. 34.🔍 Which is the odd one out? (a) a pebble (b) a glass marble (c) a piece of thermocol (d) a metal key
  35. 35.True or false: a piece of thermocol sinks in water. (a) False (b) True
  36. 36.True or false: a steel spoon sinks in water. (a) False (b) True
  37. 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) small test objects (d) a towel for spills
  38. 38.🧺 Do we need a balloon for the float-or-sink test? (a) not needed (b) needed
  39. 39.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
  40. 40.True or false: a mirror is needed for the float-or-sink test. (a) True (b) False

Answer key

  1. the shape of the clay
  2. True
  3. True
  4. yeast
  5. sinks
  6. a towel for spills
  7. we keep it the same
  8. a balloon
  9. needed
  10. True
  11. floats
  12. True
  13. wipe up spills at once
  14. True
  15. ice is less dense
  16. sinks
  17. the amount of clay
  18. the water
  19. not needed
  20. it sinks
  21. not needed
  22. a mirror
  23. we keep it the same
  24. a coin
  25. to keep children safe
  26. yeast
  27. False
  28. its hollow shape
  29. it still floats
  30. floats
  31. we keep it the same
  32. a cork
  33. an iron nail
  34. a piece of thermocol
  35. False
  36. True
  37. turmeric powder
  38. not needed
  39. False
  40. False

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