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) a magnet (b) a balloon (c) a towel for spills (d) a battery cell
- 2.🧺 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) a results table (d) a magnet
- 3.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
- 4.True or false: a dry leaf floats on water. (a) True (b) False
- 5.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a tub of water (c) a towel for spills (d) a results table
- 6.🧺 Which of these is needed for the float-or-sink test? (a) a mirror (b) small test objects (c) turmeric powder (d) yeast
- 7.🛟 Does a feather float or sink in water? (a) sinks (b) floats
- 8.⚖️ 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) True (b) False
- 9.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we measure it (b) we keep it the same (c) we change it
- 10.True or false: a ball of clay floats on water. (a) True (b) False
- 11.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the shape of the clay is what we measure. (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) turmeric powder (c) a results table (d) a tub of water
- 13.🧺 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) yeast (d) small test objects
- 14.⚖️ 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
- 15.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it turns to stone (b) it dissolves (c) it sinks faster (d) it can float
- 16.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
- 17.⚖️ 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
- 18.🔍 Which is the odd one out? (a) a dry leaf (b) an ice cube (c) an ice-cream stick (d) a steel spoon
- 19.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it still floats (d) it sinks
- 20.True or false: a ping-pong ball sinks in water. (a) False (b) True
- 21.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
- 22.True or false: a piece of thermocol sinks in water. (a) False (b) True
- 23.⚖️ 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
- 24.⚖️ 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
- 25.🛟 Does a ping-pong ball float or sink in water? (a) sinks (b) floats
- 26.⚖️ 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 change it (b) we keep it the same (c) we measure it
- 27.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a balloon (c) a results table (d) a magnet
- 28.True or false: a feather sinks in water. (a) True (b) False
- 29.🥚 A fresh egg sinks in plain water. What makes it float? (a) a few ice cubes (b) a little shaking (c) more plain water (d) lots of salt stirred in
- 30.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) play near a deep pond (c) run around the tub (d) leave water on the floor
- 31.🧺 Do we need a mirror for the float-or-sink test? (a) needed (b) not needed
- 32.🌊 What pushes a floating cork upward? (a) the cork itself (b) the water (c) the air above (d) the tub
- 33.🛟 Which of these floats on water? (a) a ping-pong ball (b) a coin (c) a ball of clay (d) a pebble
- 34.🛟 Does a cork float or sink in water? (a) floats (b) sinks
- 35.⚖️ 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 amount of clay
- 36.🛟 Which of these floats on water? (a) a coin (b) a metal key (c) a feather (d) a steel spoon
- 37.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a mirror (c) a towel for spills (d) small test objects
- 38.True or false: yeast is not needed for the float-or-sink test. (a) False (b) True
- 39.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
- 40.⚖️ 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 tub of water (c) the amount of clay (d) the shape of the clay
Answer key
- a towel for spills
- a magnet
- needed
- True
- a magnet
- small test objects
- floats
- False
- we change it
- False
- False
- turmeric powder
- yeast
- the kind of clay
- it can float
- not needed
- True
- a steel spoon
- it still floats
- False
- True
- False
- False
- False
- floats
- we keep it the same
- a results table
- False
- lots of salt stirred in
- wipe up spills at once
- not needed
- the water
- a ping-pong ball
- floats
- the amount of clay
- a feather
- a mirror
- True
- sinks
- the shape of the clay
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