Floating and Sinking Experiment Worksheet
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.🛟 Does a ball of clay float or sink in water? (a) floats (b) sinks
- 2.🌊 What pushes a floating cork upward? (a) the tub (b) the cork itself (c) the water (d) the air above
- 3.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 4.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to splash everyone (d) to keep children safe
- 5.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a results table (c) yeast (d) a balloon
- 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a battery cell (d) a towel for spills
- 7.🛟 Which of these sinks in water? (a) a pebble (b) a ping-pong ball (c) a piece of thermocol (d) a cork
- 8.🛟 Which of these floats on water? (a) a metal key (b) an empty capped bottle (c) a coin (d) an iron nail
- 9.🔍 Which is the odd one out? (a) a cork (b) a glass marble (c) an ice cube (d) a piece of thermocol
- 10.⚖️ 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
- 11.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
- 12.⚖️ 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 tub of water (b) the shape of the clay (c) the kind of clay (d) the amount of clay
- 13.🧺 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
- 14.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a balloon (d) a towel for spills
- 15.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
- 16.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
- 17.🛟 Which of these floats on water? (a) a piece of thermocol (b) a pebble (c) a coin (d) a metal key
- 18.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is kept the same. (a) True (b) False
- 19.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
- 20.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) lots of salt stirred in (d) a little shaking
- 21.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 22.⚖️ 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 measure it (b) we keep it the same (c) we change it
- 23.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) the small pebble (c) both of them (d) neither of them
- 24.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a balloon (d) a towel for spills
- 25.True or false: an ice cube floats on water. (a) False (b) True
- 26.🔍 Which is the odd one out? (a) a pebble (b) an ice-cream stick (c) a coin (d) a metal key
- 27.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) small test objects (d) turmeric powder
- 28.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (a) False (b) True
- 29.🔍 Which is the odd one out? (a) an empty capped bottle (b) a cork (c) a piece of thermocol (d) a steel spoon
- 30.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
- 31.🛟 Which of these sinks in water? (a) an ice cube (b) a dry leaf (c) a cork (d) a steel spoon
- 32.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) small test objects (d) a magnet
- 33.🛟 Which of these sinks in water? (a) a piece of thermocol (b) an empty capped bottle (c) an ice cube (d) a metal key
- 34.🧺 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) turmeric powder (d) a towel for spills
- 35.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a magnet (b) a tub of water (c) small test objects (d) a results table
- 36.🛟 Which of these floats on water? (a) an ice cube (b) a glass marble (c) a pebble (d) a coin
- 37.🛟 Which of these floats on water? (a) a steel spoon (b) an ice-cream stick (c) a pebble (d) a metal key
- 38.⚖️ 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
- 39.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a magnet (d) a tub of water
- 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a results table (d) small test objects
Answer key
- sinks
- the water
- we keep it the same
- to keep children safe
- a results table
- a battery cell
- a pebble
- an empty capped bottle
- a glass marble
- True
- wipe up spills at once
- the shape of the clay
- yeast
- a balloon
- False
- not needed
- a piece of thermocol
- True
- floats
- lots of salt stirred in
- we keep it the same
- we change it
- the big log
- a towel for spills
- True
- an ice-cream stick
- small test objects
- False
- a steel spoon
- needed
- a steel spoon
- a magnet
- a metal key
- turmeric powder
- a magnet
- an ice cube
- an ice-cream stick
- we keep it the same
- a tub of water
- a mirror
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