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