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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 540 · 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 coin sinks in water. (a) True (b) False
  2. 2.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) a results table (d) a balloon
  3. 3.🥚 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
  4. 4.⚖️ 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 keep it the same (b) we measure it (c) we change it
  5. 5.True or false: a tub of water is needed for the float-or-sink test. (a) True (b) False
  6. 6.True or false: a dry leaf floats on water. (a) False (b) True
  7. 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the amount of clay
  8. 8.True or false: a metal key sinks in water. (a) False (b) True
  9. 9.🔮 A cork floats in tap water. What happens in very salty water? (a) it still floats (b) it sinks (c) it turns white (d) it dissolves
  10. 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a tub of water (d) a balloon
  11. 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a results table (c) turmeric powder (d) a towel for spills
  12. 12.🛟 Does a ball of clay 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 shape of the clay is the one thing we change. (a) False (b) True
  14. 14.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) play near a deep pond (c) wipe up spills at once (d) leave water on the floor
  15. 15.🛟 Which of these sinks in water? (a) a feather (b) a piece of thermocol (c) a ping-pong ball (d) a glass marble
  16. 16.True or false: a steel spoon floats on water. (a) True (b) False
  17. 17.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it can float (c) it sinks faster (d) it dissolves
  18. 18.🌊 What pushes a floating cork upward? (a) the cork itself (b) the air above (c) the water (d) the tub
  19. 19.🔍 Which is the odd one out? (a) an ice cube (b) an ice-cream stick (c) an empty capped bottle (d) a steel spoon
  20. 20.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it floats higher (c) it sinks (d) it melts
  21. 21.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
  22. 22.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a tub of water (c) turmeric powder (d) a results table
  23. 23.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
  24. 24.True or false: a pebble floats on water. (a) True (b) False
  25. 25.🔍 Which is the odd one out? (a) a piece of thermocol (b) a cork (c) a glass marble (d) a dry leaf
  26. 26.True or false: a metal key floats on water. (a) False (b) True
  27. 27.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice cube (c) a dry leaf (d) an iron nail
  28. 28.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
  29. 29.🛟 Does a steel spoon float or sink in water? (a) floats (b) sinks
  30. 30.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it sinks (c) it dissolves (d) it bounces up
  31. 31.🛟 Which of these sinks in water? (a) an ice cube (b) a metal key (c) a feather (d) an empty capped bottle
  32. 32.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) whether it floats (b) the shape of the clay (c) the tub of water
  33. 33.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
  34. 34.True or false: an ice cube sinks in water. (a) True (b) False
  35. 35.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
  36. 36.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
  37. 37.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
  38. 38.True or false: a ball of clay sinks in water. (a) False (b) True
  39. 39.True or false: a steel spoon sinks in water. (a) False (b) True
  40. 40.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False

Answer key

  1. True
  2. a results table
  3. lots of salt stirred in
  4. we keep it the same
  5. True
  6. True
  7. the amount of clay
  8. True
  9. it still floats
  10. a balloon
  11. turmeric powder
  12. sinks
  13. True
  14. wipe up spills at once
  15. a glass marble
  16. False
  17. it can float
  18. the water
  19. a steel spoon
  20. it sinks
  21. needed
  22. turmeric powder
  23. needed
  24. False
  25. a glass marble
  26. False
  27. an iron nail
  28. not needed
  29. sinks
  30. it sinks
  31. a metal key
  32. the tub of water
  33. False
  34. False
  35. True
  36. needed
  37. True
  38. True
  39. True
  40. False

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