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