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.True or false: a balloon is not needed for the float-or-sink test. (a) False (b) True
- 2.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
- 3.🛟 Which of these sinks in water? (a) an ice cube (b) an ice-cream stick (c) a piece of thermocol (d) a steel spoon
- 4.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the small pebble (b) the big log (c) neither of them (d) both of them
- 5.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is the one thing we change. (a) False (b) True
- 6.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
- 7.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is kept the same. (a) True (b) False
- 8.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
- 9.🧺 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 battery cell (d) small test objects
- 10.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
- 11.🧺 Which of these is needed for the float-or-sink test? (a) a balloon (b) yeast (c) a battery cell (d) small test objects
- 12.🧺 Which of these is not needed for the float-or-sink test? (a) a mirror (b) a towel for spills (c) a tub of water (d) a results table
- 13.🛟 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
- 14.⚖️ 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
- 15.⚖️ 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
- 16.True or false: a ping-pong ball floats on water. (a) False (b) True
- 17.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a few ice cubes (c) a little shaking (d) lots of salt stirred in
- 18.True or false: a ping-pong ball sinks in water. (a) True (b) False
- 19.⚖️ 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) False (b) True
- 20.🛟 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 splash everyone (d) to win a prize
- 21.⚖️ 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
- 22.True or false: a towel for spills is not needed for the float-or-sink test. (a) True (b) False
- 23.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
- 24.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) steel is very light (c) its hollow shape (d) it has a magnet
- 25.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
- 26.⚖️ 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 kind of clay (b) the shape of the clay (c) whether it floats (d) the amount of clay
- 27.⚖️ 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 keep it the same (c) we measure it
- 28.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a battery cell (c) a magnet (d) a tub of water
- 29.🛟 Which of these floats on water? (a) a steel spoon (b) an ice cube (c) a pebble (d) a ball of clay
- 30.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) yeast (c) small test objects (d) a tub of water
- 31.⚖️ 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
- 32.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a results table (d) a tub of water
- 33.🛟 Does a feather float or sink in water? (a) sinks (b) floats
- 34.🛟 Which of these floats on water? (a) a metal key (b) a steel spoon (c) a pebble (d) a feather
- 35.🧺 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 results table (d) a balloon
- 36.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 37.🛟 Which of these sinks in water? (a) a feather (b) a glass marble (c) an ice-cream stick (d) an empty capped bottle
- 38.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) the amount of clay (c) the kind of clay (d) whether it floats
- 39.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
- 40.True or false: a dry leaf floats on water. (a) True (b) False
Answer key
- True
- True
- a steel spoon
- the big log
- True
- False
- True
- floats
- a battery cell
- not needed
- small test objects
- a mirror
- wipe up spills at once
- True
- True
- True
- lots of salt stirred in
- False
- False
- to keep children safe
- we keep it the same
- False
- True
- its hollow shape
- not needed
- the shape of the clay
- we keep it the same
- a tub of water
- an ice cube
- yeast
- False
- a magnet
- floats
- a feather
- a balloon
- needed
- a glass marble
- whether it floats
- False
- True
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