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Floating and Sinking Experiment Worksheet

Science experiments lesson 1: Floating and sinking · Set 651 · 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 is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
  2. 2.🧺 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 towel for spills (d) a magnet
  3. 3.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
  4. 4.🛟 Which of these floats on water? (a) a pebble (b) a steel spoon (c) a ping-pong ball (d) a metal key
  5. 5.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
  6. 6.🌊 What pushes a floating cork upward? (a) the tub (b) the water (c) the cork itself (d) the air above
  7. 7.True or false: a ping-pong ball sinks in water. (a) True (b) False
  8. 8.🔍 Which is the odd one out? (a) a ping-pong ball (b) a steel spoon (c) a metal key (d) a pebble
  9. 9.🚢 Why can a heavy steel ship float on the sea? (a) steel is very light (b) sea water is warm (c) its hollow shape (d) it has a magnet
  10. 10.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an ice cube (c) a cork (d) a coin
  11. 11.🛟 Which of these floats on water? (a) a steel spoon (b) a feather (c) a pebble (d) an iron nail
  12. 12.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
  13. 13.🔮 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
  14. 14.⚖️ 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 kind of clay (c) the shape of the clay
  15. 15.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
  16. 16.True or false: a cork sinks in water. (a) False (b) True
  17. 17.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a tub of water (c) a mirror (d) small test objects
  18. 18.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
  19. 19.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
  20. 20.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) yeast (c) a tub of water (d) a results table
  21. 21.🛟 Does a feather float or sink in water? (a) floats (b) sinks
  22. 22.🛟 Does a cork float or sink in water? (a) floats (b) sinks
  23. 23.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is the one thing we change? (a) whether it floats (b) the tub of water (c) the kind of clay (d) the shape of the clay
  24. 24.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
  25. 25.True or false: a metal key floats on water. (a) False (b) True
  26. 26.🔮 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 dissolves (d) it sinks faster
  27. 27.True or false: a glass marble sinks in water. (a) False (b) True
  28. 28.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) a few ice cubes (c) more plain water (d) a little shaking
  29. 29.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
  30. 30.⚖️ 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
  31. 31.🔍 Which is the odd one out? (a) an ice-cream stick (b) a ping-pong ball (c) a metal key (d) a cork
  32. 32.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it floats higher (c) it turns blue (d) it sinks
  33. 33.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) yeast (d) small test objects
  34. 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) a balloon
  35. 35.True or false: a coin floats on water. (a) False (b) True
  36. 36.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a ping-pong ball (c) an iron nail (d) a cork
  37. 37.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) small test objects (d) a magnet
  38. 38.True or false: a piece of thermocol floats on water. (a) False (b) True
  39. 39.🔍 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
  40. 40.🔍 Which is the odd one out? (a) an ice-cream stick (b) a pebble (c) an ice cube (d) a dry leaf

Answer key

  1. wipe up spills at once
  2. a magnet
  3. not needed
  4. a ping-pong ball
  5. True
  6. the water
  7. False
  8. a ping-pong ball
  9. its hollow shape
  10. a coin
  11. a feather
  12. not needed
  13. it still floats
  14. the kind of clay
  15. to keep children safe
  16. False
  17. a mirror
  18. False
  19. needed
  20. yeast
  21. floats
  22. floats
  23. the shape of the clay
  24. True
  25. False
  26. it can float
  27. True
  28. lots of salt stirred in
  29. not needed
  30. True
  31. a metal key
  32. it sinks
  33. yeast
  34. a balloon
  35. False
  36. an iron nail
  37. a magnet
  38. True
  39. it sinks
  40. a pebble

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