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.🧺 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 tub of water (d) turmeric powder
- 2.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
- 3.True or false: a cork sinks in water. (a) False (b) True
- 4.🔍 Which is the odd one out? (a) a metal key (b) a steel spoon (c) a ball of clay (d) an ice cube
- 5.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to hide the corks (c) to splash everyone (d) to win a prize
- 6.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
- 7.⚖️ 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) False (b) True
- 8.⚖️ 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
- 9.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
- 10.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) neither of them (c) the big log (d) both of them
- 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) whether it floats (b) the kind of clay (c) the shape of the clay (d) the amount of clay
- 12.⚖️ 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
- 13.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
- 14.🛟 Does a glass marble float or sink in water? (a) sinks (b) floats
- 15.🛟 Which of these floats on water? (a) a steel spoon (b) an ice-cream stick (c) a ball of clay (d) a pebble
- 16.⚖️ 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 change it (c) we keep it the same
- 17.⚖️ 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
- 18.🧊 Why does an ice cube float on water? (a) water is sticky (b) ice is very cold (c) ice is less dense (d) ice is magnetic
- 19.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it can float (c) it dissolves (d) it turns to stone
- 20.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) a glass marble (d) a cork
- 21.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a tub of water (c) a balloon (d) a mirror
- 22.🛟 Does a cork float or sink in water? (a) floats (b) sinks
- 23.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a balloon (c) a results table (d) small test objects
- 24.⚖️ 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) True (b) False
- 25.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
- 26.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
- 27.True or false: a piece of thermocol floats on water. (a) True (b) False
- 28.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a magnet (d) a results table
- 29.🛟 Which is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) wipe up spills at once (d) run around the tub
- 30.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a towel for spills (c) turmeric powder (d) a tub of water
- 31.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 32.⚖️ 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) False (b) True
- 33.🛟 Which of these floats on water? (a) a pebble (b) a ball of clay (c) a coin (d) a dry leaf
- 34.🛟 Does a piece of thermocol float or sink in water? (a) floats (b) sinks
- 35.🧺 Do we need a tub of water for the float-or-sink test? (a) needed (b) not needed
- 36.⚖️ 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 change it (b) we measure it (c) we keep it the same
- 37.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) a battery cell (d) a balloon
- 38.⚖️ 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) False (b) True
- 39.True or false: small test objects is not needed for the float-or-sink test. (a) True (b) False
- 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a towel for spills (d) a battery cell
Answer key
- turmeric powder
- not needed
- False
- an ice cube
- to keep children safe
- floats
- False
- the tub of water
- True
- the big log
- the shape of the clay
- we measure it
- True
- sinks
- an ice-cream stick
- we keep it the same
- False
- ice is less dense
- it can float
- a cork
- a tub of water
- floats
- a balloon
- True
- its hollow shape
- sinks
- True
- a magnet
- wipe up spills at once
- turmeric powder
- needed
- False
- a dry leaf
- floats
- needed
- we keep it the same
- a towel for spills
- True
- False
- a battery cell
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