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) yeast (b) turmeric powder (c) a results table (d) a balloon
- 2.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: whether it floats is the one thing we change. (a) False (b) True
- 3.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) turmeric powder (c) a mirror (d) a towel for spills
- 4.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice-cream stick (c) a coin (d) a piece of thermocol
- 5.⚖️ 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 measure it (b) we change it (c) we keep it the same
- 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) False (b) True
- 7.🧺 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 mirror (d) a towel for spills
- 8.⚖️ 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 keep it the same (b) we measure it (c) we change it
- 9.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 10.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a towel for spills (c) a battery cell (d) a tub of water
- 11.True or false: small test objects is needed for the float-or-sink test. (a) True (b) False
- 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a results table (d) a tub of water
- 13.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the amount of clay is the one thing we change. (a) False (b) True
- 14.🛟 Which of these sinks in water? (a) a feather (b) an iron nail (c) an ice cube (d) a ping-pong ball
- 15.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
- 16.⚖️ 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
- 17.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) small test objects (c) a towel for spills (d) a tub of water
- 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a battery cell (c) a towel for spills (d) small test objects
- 19.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
- 20.True or false: a ball of clay floats on water. (a) True (b) False
- 21.⚖️ 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
- 22.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
- 23.⚖️ 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
- 24.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to win a prize (c) to hide the corks (d) to keep children safe
- 25.🛟 Does a pebble float or sink in water? (a) floats (b) sinks
- 26.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the kind of clay is what we measure. (a) True (b) False
- 27.True or false: yeast is needed for the float-or-sink test. (a) False (b) True
- 28.⚖️ 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 amount of clay (b) the shape of the clay (c) the tub of water (d) whether it floats
- 29.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a magnet (c) a tub of water (d) small test objects
- 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is kept the same? (a) the amount of clay (b) the shape of the clay (c) whether it floats
- 31.True or false: a balloon is needed for the float-or-sink test. (a) False (b) True
- 32.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice cube (c) an ice-cream stick (d) a ball of clay
- 33.🧺 Do we need small test objects for the float-or-sink test? (a) needed (b) not needed
- 34.True or false: a cork floats on water. (a) False (b) True
- 35.🔮 A cork floats in tap water. What happens in very salty water? (a) it sinks (b) it turns white (c) it dissolves (d) it still floats
- 36.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) more plain water (c) a little shaking (d) lots of salt stirred in
- 37.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
- 38.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
- 39.🛟 Does a dry leaf float or sink in water? (a) floats (b) sinks
- 40.🛟 Which of these sinks in water? (a) a dry leaf (b) a ping-pong ball (c) a glass marble (d) an ice cube
Answer key
- a results table
- False
- a towel for spills
- a coin
- we keep it the same
- True
- a mirror
- we keep it the same
- not needed
- a battery cell
- True
- a balloon
- False
- an iron nail
- True
- we measure it
- a magnet
- a battery cell
- needed
- False
- False
- False
- we keep it the same
- to keep children safe
- sinks
- False
- False
- the shape of the clay
- a magnet
- the amount of clay
- False
- a ball of clay
- needed
- True
- it still floats
- lots of salt stirred in
- floats
- wipe up spills at once
- floats
- a glass marble
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