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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 900 · 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.🛟 Which of these sinks in water? (a) a metal key (b) an ice-cream stick (c) an empty capped bottle (d) a cork
  2. 2.🔍 Which is the odd one out? (a) a metal key (b) an empty capped bottle (c) an iron nail (d) a steel spoon
  3. 3.🛟 Which of these sinks in water? (a) a ball of clay (b) an ice-cream stick (c) a cork (d) an ice cube
  4. 4.True or false: a glass marble floats on water. (a) False (b) True
  5. 5.⚖️ 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 keep it the same (c) we measure it
  6. 6.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a balloon (d) a results table
  7. 7.🛟 Does a cork float or sink in water? (a) floats (b) sinks
  8. 8.⚖️ 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 amount of clay (c) the kind of clay (d) the tub of water
  9. 9.True or false: a cork sinks in water. (a) True (b) False
  10. 10.⚖️ 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) True (b) False
  11. 11.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
  12. 12.🧺 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 towel for spills (d) a mirror
  13. 13.🧊 Why does an ice cube float on water? (a) ice is magnetic (b) ice is very cold (c) ice is less dense (d) water is sticky
  14. 14.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
  15. 15.True or false: an ice-cream stick sinks in water. (a) False (b) True
  16. 16.🧺 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 towel for spills (d) a battery cell
  17. 17.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
  18. 18.🔍 Which is the odd one out? (a) a coin (b) an iron nail (c) a ping-pong ball (d) a pebble
  19. 19.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
  20. 20.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it floats (d) it dissolves
  21. 21.🔮 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
  22. 22.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the small pebble (c) neither of them (d) the big log
  23. 23.⚖️ 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 change it (c) we measure it
  24. 24.🧺 Do we need small test objects for the float-or-sink test? (a) not needed (b) needed
  25. 25.True or false: an iron nail sinks in water. (a) True (b) False
  26. 26.🧺 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) turmeric powder (d) a tub of water
  27. 27.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
  28. 28.⚖️ 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) False (b) True
  29. 29.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it turns to stone (c) it can float (d) it sinks faster
  30. 30.🛟 Which of these floats on water? (a) a metal key (b) a glass marble (c) an iron nail (d) an ice cube
  31. 31.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
  32. 32.🔍 Which is the odd one out? (a) a feather (b) a pebble (c) a metal key (d) a coin
  33. 33.🛟 Does a piece of thermocol float or sink in water? (a) sinks (b) floats
  34. 34.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
  35. 35.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) a coin (d) an ice-cream stick
  36. 36.True or false: a results table is not needed for the float-or-sink test. (a) True (b) False
  37. 37.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
  38. 38.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a mirror (c) a magnet (d) a tub of water
  39. 39.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) lots of salt stirred in (c) a little shaking (d) more plain water
  40. 40.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) turmeric powder (c) a balloon (d) small test objects

Answer key

  1. a metal key
  2. an empty capped bottle
  3. a ball of clay
  4. False
  5. we keep it the same
  6. a balloon
  7. floats
  8. whether it floats
  9. False
  10. True
  11. False
  12. a mirror
  13. ice is less dense
  14. not needed
  15. False
  16. a battery cell
  17. floats
  18. a ping-pong ball
  19. floats
  20. it sinks
  21. it still floats
  22. the big log
  23. we change it
  24. needed
  25. True
  26. turmeric powder
  27. needed
  28. True
  29. it can float
  30. an ice cube
  31. False
  32. a feather
  33. floats
  34. False
  35. a coin
  36. False
  37. sinks
  38. a tub of water
  39. lots of salt stirred in
  40. small test objects

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