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 shape of the clay”? (a) we keep it the same (b) we measure it (c) we change it
- 2.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
- 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is kept the same. (a) True (b) False
- 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
- 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is kept the same. (a) True (b) False
- 6.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
- 7.True or false: a piece of thermocol sinks in water. (a) False (b) True
- 8.🔍 Which is the odd one out? (a) a piece of thermocol (b) an empty capped bottle (c) a ball of clay (d) a dry leaf
- 9.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a tub of water (d) a battery cell
- 10.🔍 Which is the odd one out? (a) a ping-pong ball (b) a glass marble (c) an empty capped bottle (d) a piece of thermocol
- 11.⚖️ 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 amount of clay (c) the kind of clay (d) the shape of the clay
- 12.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it sinks (c) it dissolves (d) it floats
- 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) True (b) False
- 14.True or false: a coin floats on water. (a) True (b) False
- 15.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
- 16.True or false: a feather sinks in water. (a) True (b) False
- 17.🧺 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) a magnet (d) small test objects
- 18.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
- 19.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) a towel for spills (d) small test objects
- 20.🛟 Which of these sinks in water? (a) a feather (b) a coin (c) an ice-cream stick (d) an ice cube
- 21.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is kept the same. (a) True (b) False
- 22.🧊 Why does an ice cube float on water? (a) ice is less dense (b) ice is magnetic (c) ice is very cold (d) water is sticky
- 23.⚖️ 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 measure it (b) we keep it the same (c) we change it
- 24.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
- 25.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) a battery cell (c) a magnet (d) yeast
- 26.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
- 27.🧺 Which of these is not needed for the float-or-sink test? (a) a balloon (b) small test objects (c) a tub of water (d) a towel for spills
- 28.🛟 Which of these floats on water? (a) an iron nail (b) a ping-pong ball (c) a ball of clay (d) a coin
- 29.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a magnet (c) a tub of water (d) small test objects
- 30.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a feather (d) a pebble
- 31.🧺 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) a balloon (d) a towel for spills
- 32.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
- 33.🔍 Which is the odd one out? (a) a piece of thermocol (b) a steel spoon (c) a coin (d) a glass marble
- 34.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) both of them (c) neither of them (d) the small pebble
- 35.🔍 Which is the odd one out? (a) a feather (b) a dry leaf (c) a ping-pong ball (d) a coin
- 36.🛟 Does an ice cube 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 amount of clay (b) whether it floats (c) the shape of the clay (d) the kind of clay
- 38.⚖️ 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) False (b) True
- 39.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
- 40.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it floats higher (b) it turns blue (c) it sinks (d) it melts
Answer key
- we change it
- False
- True
- we measure it
- False
- False
- False
- a ball of clay
- a battery cell
- a glass marble
- the shape of the clay
- it sinks
- True
- False
- sinks
- False
- a magnet
- not needed
- yeast
- a coin
- False
- ice is less dense
- we keep it the same
- not needed
- small test objects
- not needed
- a balloon
- a ping-pong ball
- a magnet
- a feather
- a balloon
- sinks
- a piece of thermocol
- the big log
- a coin
- floats
- whether it floats
- False
- needed
- it sinks
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