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 an ice-cream stick float or sink in water? (a) floats (b) sinks
- 2.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a results table (c) a towel for spills (d) small test objects
- 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a battery cell (d) a results table
- 4.🥚 A fresh egg sinks in plain water. What makes it float? (a) lots of salt stirred in (b) more plain water (c) a little shaking (d) a few ice cubes
- 5.⚖️ 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
- 6.⚖️ 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 tub of water (c) the shape of the clay
- 7.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) a battery cell (c) a towel for spills (d) a tub of water
- 8.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
- 9.⚖️ 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 keep it the same (c) we change it
- 10.True or false: a magnet is not needed for the float-or-sink test. (a) False (b) True
- 11.🛟 Does an ice cube float or sink in water? (a) sinks (b) floats
- 12.True or false: a battery cell is needed for the float-or-sink test. (a) True (b) False
- 13.🔍 Which is the odd one out? (a) a piece of thermocol (b) an ice-cream stick (c) an ice cube (d) a metal key
- 14.🧺 Do we need a results table for the float-or-sink test? (a) needed (b) not needed
- 15.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
- 16.🛟 Does a coin float or sink in water? (a) sinks (b) floats
- 17.True or false: an ice cube sinks in water. (a) False (b) True
- 18.⚖️ 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
- 19.True or false: a tub of water is not needed for the float-or-sink test. (a) False (b) True
- 20.⚖️ 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 shape of the clay (c) the tub of water (d) the amount of clay
- 21.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
- 22.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a balloon (c) a tub of water (d) a results table
- 23.🧺 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) turmeric powder
- 24.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
- 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) the kind of clay (c) the shape of the clay (d) whether it floats
- 26.🌊 What pushes a floating cork upward? (a) the water (b) the air above (c) the cork itself (d) the tub
- 27.⚖️ 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) True (b) False
- 28.🧺 Which of these is needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) a mirror (d) turmeric powder
- 29.⚖️ 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
- 30.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) yeast (c) a balloon (d) a mirror
- 31.🧺 Do we need a tub of water 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 kind of clay is kept the same. (a) True (b) False
- 33.⚖️ 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) whether it floats (c) the kind of clay
- 34.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a results table (c) a tub of water (d) small test objects
- 35.True or false: a cork sinks in water. (a) True (b) False
- 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a magnet (d) a tub of water
- 37.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 38.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to hide the corks (b) to keep children safe (c) to win a prize (d) to splash everyone
- 39.🧊 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
- 40.🧺 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) small test objects (d) yeast
Answer key
- floats
- turmeric powder
- a battery cell
- lots of salt stirred in
- we keep it the same
- the tub of water
- a battery cell
- not needed
- we keep it the same
- True
- floats
- False
- a metal key
- needed
- not needed
- sinks
- False
- False
- False
- the shape of the clay
- floats
- a balloon
- turmeric powder
- True
- whether it floats
- the water
- True
- a tub of water
- we keep it the same
- a results table
- needed
- True
- the kind of clay
- a mirror
- False
- a magnet
- not needed
- to keep children safe
- ice is less dense
- yeast
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