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.⚖️ 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
- 2.⚖️ 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 change it (c) we keep it the same
- 3.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
- 4.🔍 Which is the odd one out? (a) a ball of clay (b) a glass marble (c) a dry leaf (d) a pebble
- 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) the tub of water (c) whether it floats (d) the kind of clay
- 6.🔍 Which is the odd one out? (a) a coin (b) an ice cube (c) a ball of clay (d) a glass marble
- 7.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
- 8.🔍 Which is the odd one out? (a) a cork (b) a pebble (c) an ice-cream stick (d) a piece of thermocol
- 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is what we measure. (a) False (b) True
- 10.⚖️ 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) False (b) True
- 11.⚖️ 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
- 12.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
- 13.🛟 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
- 14.🧊 Why does an ice cube float on water? (a) ice is very cold (b) ice is magnetic (c) water is sticky (d) ice is less dense
- 15.True or false: a metal key sinks in water. (a) True (b) False
- 16.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) turmeric powder (d) a results table
- 17.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
- 18.🔍 Which is the odd one out? (a) a pebble (b) a ball of clay (c) an empty capped bottle (d) a coin
- 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) a magnet (d) a tub of water
- 20.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) yeast (c) a results table (d) a balloon
- 21.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
- 22.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 23.🧺 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) yeast
- 24.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) turmeric powder (d) a tub of water
- 25.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
- 26.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 27.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) lots of salt stirred in (d) a few ice cubes
- 28.True or false: a piece of thermocol floats on water. (a) False (b) True
- 29.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) False (b) True
- 30.🛟 Which of these sinks in water? (a) a feather (b) a dry leaf (c) a cork (d) a steel spoon
- 31.True or false: a cork sinks in water. (a) False (b) True
- 32.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) run around the tub (c) play near a deep pond (d) wipe up spills at once
- 33.🧺 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 mirror (d) a tub of water
- 34.🔍 Which is the odd one out? (a) a metal key (b) an ice-cream stick (c) a feather (d) an ice cube
- 35.⚖️ 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) whether it floats (c) the amount of clay
- 36.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
- 37.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
- 38.🔍 You drop a coin into a tub of water. What do you see? (a) it sinks (b) it dissolves (c) it bounces up (d) it floats
- 39.⚖️ 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 keep it the same (c) we change it
- 40.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) yeast (c) a tub of water (d) a results table
Answer key
- we keep it the same
- we change it
- False
- a dry leaf
- whether it floats
- an ice cube
- not needed
- a pebble
- False
- True
- the kind of clay
- floats
- to keep children safe
- ice is less dense
- True
- turmeric powder
- False
- an empty capped bottle
- a magnet
- a results table
- False
- needed
- yeast
- a tub of water
- sinks
- not needed
- lots of salt stirred in
- True
- False
- a steel spoon
- False
- wipe up spills at once
- a mirror
- a metal key
- the amount of clay
- needed
- floats
- it sinks
- we keep it the same
- yeast
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