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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 756 · 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.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) a balloon (d) a tub of water
  2. 2.⚖️ 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) whether it floats (c) the tub of water
  3. 3.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) a cork (d) an ice cube
  4. 4.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
  5. 5.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a results table (c) a towel for spills (d) small test objects
  6. 6.⚖️ 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 measure it (c) we change it
  7. 7.🛟 Does an iron nail float or sink in water? (a) floats (b) sinks
  8. 8.True or false: a cork floats on water. (a) False (b) True
  9. 9.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
  10. 10.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it dissolves (c) it sinks (d) it turns white
  11. 11.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
  12. 12.🔍 You drop a coin into a tub of water. What do you see? (a) it dissolves (b) it bounces up (c) it sinks (d) it floats
  13. 13.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it melts (c) it turns blue (d) it sinks
  14. 14.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
  15. 15.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) True (b) False
  16. 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a towel for spills (d) a results table
  17. 17.🛟 Which of these sinks in water? (a) a ball of clay (b) a piece of thermocol (c) a ping-pong ball (d) a cork
  18. 18.🧊 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
  19. 19.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
  20. 20.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the air above (d) the water
  21. 21.True or false: a steel spoon floats on water. (a) False (b) True
  22. 22.True or false: a ping-pong ball floats on water. (a) False (b) True
  23. 23.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
  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 measure it (b) we keep it the same (c) we change it
  25. 25.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a piece of thermocol (c) an empty capped bottle (d) a coin
  26. 26.True or false: a glass marble floats on water. (a) False (b) True
  27. 27.🔍 Which is the odd one out? (a) an iron nail (b) a feather (c) a piece of thermocol (d) a ping-pong ball
  28. 28.🛟 Which of these floats on water? (a) a pebble (b) a glass marble (c) a piece of thermocol (d) a coin
  29. 29.⚖️ 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
  30. 30.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
  31. 31.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) a magnet (d) a tub of water
  32. 32.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
  33. 33.🔍 Which is the odd one out? (a) a ball of clay (b) a dry leaf (c) a steel spoon (d) an iron nail
  34. 34.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it dissolves (c) it turns to stone (d) it can float
  35. 35.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
  36. 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a tub of water (d) yeast
  37. 37.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
  38. 38.🛟 Which of these sinks in water? (a) an iron nail (b) a piece of thermocol (c) a cork (d) a dry leaf
  39. 39.🛟 Which of these floats on water? (a) a glass marble (b) a metal key (c) a ball of clay (d) an ice cube
  40. 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) a results table (d) a mirror

Answer key

  1. a balloon
  2. the tub of water
  3. a coin
  4. False
  5. a mirror
  6. we change it
  7. sinks
  8. True
  9. True
  10. it still floats
  11. needed
  12. it sinks
  13. it sinks
  14. to keep children safe
  15. False
  16. a magnet
  17. a ball of clay
  18. ice is less dense
  19. floats
  20. the water
  21. False
  22. True
  23. floats
  24. we measure it
  25. a coin
  26. False
  27. an iron nail
  28. a piece of thermocol
  29. True
  30. True
  31. a tub of water
  32. True
  33. a dry leaf
  34. it can float
  35. not needed
  36. yeast
  37. sinks
  38. an iron nail
  39. an ice cube
  40. a mirror

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