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