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 is the safe way to do the float-or-sink test? (a) leave water on the floor (b) play near a deep pond (c) run around the tub (d) wipe up spills at once
- 2.⚖️ 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 amount of clay
- 3.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) a magnet (c) a towel for spills (d) a results table
- 4.True or false: a piece of thermocol sinks in water. (a) False (b) True
- 5.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice-cream stick (c) an iron nail (d) a ping-pong ball
- 6.True or false: a pebble sinks in water. (a) True (b) False
- 7.⚖️ 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
- 8.True or false: a results table is needed for the float-or-sink test. (a) True (b) False
- 9.True or false: a coin floats on water. (a) False (b) True
- 10.🔍 Which is the odd one out? (a) an iron nail (b) an ice cube (c) a dry leaf (d) a ping-pong ball
- 11.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) a magnet (c) yeast (d) a towel for spills
- 12.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) small test objects (d) a battery cell
- 13.⚖️ 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
- 14.True or false: a steel spoon floats on water. (a) False (b) True
- 15.⚖️ 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) True (b) False
- 16.🛟 Which of these floats on water? (a) a steel spoon (b) a coin (c) a pebble (d) an empty capped bottle
- 17.🛟 Does an ice-cream stick float or sink in water? (a) floats (b) sinks
- 18.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
- 19.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
- 20.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a mirror (c) a results table (d) a tub of water
- 21.⚖️ 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
- 22.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
- 23.True or false: an ice cube sinks in water. (a) False (b) True
- 24.🧺 Do we need a tub of water for the float-or-sink test? (a) not needed (b) needed
- 25.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) yeast (c) a results table (d) small test objects
- 26.🛟 Which of these floats on water? (a) a coin (b) a ping-pong ball (c) a glass marble (d) a steel spoon
- 27.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 28.🧺 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) small test objects (d) a tub of water
- 29.⚖️ 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
- 30.⚖️ 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
- 31.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the air above (d) the tub
- 32.⚖️ 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
- 33.🔮 A big log and a small pebble go into a pond. Which one floats? (a) neither of them (b) both of them (c) the big log (d) the small pebble
- 34.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) turmeric powder (b) a towel for spills (c) a tub of water (d) small test objects
- 35.True or false: a ping-pong ball sinks in water. (a) True (b) False
- 36.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to keep children safe (b) to win a prize (c) to splash everyone (d) to hide the corks
- 37.True or false: a cork sinks in water. (a) True (b) False
- 38.🔍 Which is the odd one out? (a) a dry leaf (b) a ping-pong ball (c) a metal key (d) a feather
- 39.⚖️ 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
- 40.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) yeast (c) a balloon (d) a results table
Answer key
- wipe up spills at once
- the amount of clay
- a magnet
- False
- an iron nail
- True
- True
- True
- False
- an iron nail
- a towel for spills
- a battery cell
- the tub of water
- False
- False
- an empty capped bottle
- floats
- needed
- True
- a mirror
- True
- not needed
- False
- needed
- yeast
- a ping-pong ball
- needed
- a balloon
- False
- False
- the water
- the shape of the clay
- the big log
- turmeric powder
- False
- to keep children safe
- False
- a metal key
- False
- a results table
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