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