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