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) a results table (b) small test objects (c) a tub of water (d) a battery cell
- 2.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
- 3.True or false: a towel for spills is needed for the float-or-sink test. (a) False (b) True
- 4.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
- 5.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
- 6.🛟 Which of these sinks in water? (a) a glass marble (b) a dry leaf (c) a cork (d) an empty capped bottle
- 7.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
- 8.🛟 Which of these sinks in water? (a) an iron nail (b) an ice cube (c) an empty capped bottle (d) a piece of thermocol
- 9.⚖️ 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
- 10.⚖️ 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) whether it floats (c) the amount of clay (d) the kind of clay
- 11.🛟 Does a steel spoon float or sink in water? (a) sinks (b) floats
- 12.🛟 Which of these floats on water? (a) a steel spoon (b) an ice-cream stick (c) a metal key (d) an iron nail
- 13.🛟 Which of these floats on water? (a) a feather (b) a pebble (c) a coin (d) a metal key
- 14.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is the one thing we change. (a) True (b) False
- 15.🚢 Why can a heavy steel ship float on the sea? (a) it has a magnet (b) steel is very light (c) its hollow shape (d) sea water is warm
- 16.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the kind of clay (b) the shape of the clay (c) whether it floats
- 17.🛟 Which of these floats on water? (a) a glass marble (b) a steel spoon (c) a metal key (d) a ping-pong ball
- 18.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
- 19.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
- 20.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
- 21.True or false: turmeric powder is needed for the float-or-sink test. (a) False (b) True
- 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a towel for spills (c) turmeric powder (d) a results table
- 23.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a results table (d) a towel for spills
- 24.⚖️ 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
- 25.🛟 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) run around the tub (d) leave water on the floor
- 26.🧺 Do we need yeast for the float-or-sink test? (a) needed (b) not needed
- 27.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 28.🛟 Which of these sinks in water? (a) a cork (b) an ice cube (c) a pebble (d) a dry leaf
- 29.🔍 Which is the odd one out? (a) a piece of thermocol (b) a metal key (c) an iron nail (d) a coin
- 30.⚖️ 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) whether it floats (c) the amount of clay (d) the tub of water
- 31.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a tub of water (c) a results table (d) yeast
- 32.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
- 33.⚖️ 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
- 34.🔍 Which is the odd one out? (a) a glass marble (b) a steel spoon (c) a ping-pong ball (d) a coin
- 35.🔍 Which is the odd one out? (a) a ping-pong ball (b) an empty capped bottle (c) an ice cube (d) an iron nail
- 36.🧊 Why does an ice cube float on water? (a) ice is less dense (b) water is sticky (c) ice is very cold (d) ice is magnetic
- 37.🧺 Which of these is needed for the float-or-sink test? (a) small test objects (b) yeast (c) a magnet (d) a mirror
- 38.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) a piece of thermocol (d) a feather
- 39.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to win a prize (c) to keep children safe (d) to splash everyone
- 40.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
Answer key
- a battery cell
- True
- True
- needed
- False
- a glass marble
- True
- an iron nail
- True
- the shape of the clay
- sinks
- an ice-cream stick
- a feather
- False
- its hollow shape
- the kind of clay
- a ping-pong ball
- True
- True
- False
- False
- turmeric powder
- a magnet
- True
- wipe up spills at once
- not needed
- not needed
- a pebble
- a piece of thermocol
- whether it floats
- yeast
- needed
- we measure it
- a ping-pong ball
- an iron nail
- ice is less dense
- small test objects
- a coin
- to keep children safe
- not needed
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