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.
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- 1.🛟 Which of these floats on water? (a) a cork (b) a glass marble (c) a pebble (d) a steel spoon
- 2.⚖️ 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
- 3.🛟 Which of these floats on water? (a) a steel spoon (b) a pebble (c) a coin (d) an ice-cream stick
- 4.True or false: an empty capped bottle floats on water. (a) False (b) True
- 5.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
- 6.🔍 Which is the odd one out? (a) a cork (b) a feather (c) a ball of clay (d) an ice cube
- 7.🧺 Which of these is not needed for the float-or-sink test? (a) a magnet (b) a towel for spills (c) a tub of water (d) a results table
- 8.True or false: an ice-cream stick floats on water. (a) False (b) True
- 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 keep it the same (b) we measure it (c) we change it
- 10.True or false: a magnet is needed for the float-or-sink test. (a) False (b) True
- 11.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
- 12.⚖️ 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
- 13.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 14.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) a results table (c) small test objects (d) a magnet
- 15.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
- 16.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a battery cell (d) a towel for spills
- 17.🛟 Does a coin float or sink in water? (a) sinks (b) floats
- 18.🥚 A fresh egg sinks in plain water. What makes it float? (a) more plain water (b) a little shaking (c) lots of salt stirred in (d) a few ice cubes
- 19.🛟 Which is the safe way to do the float-or-sink test? (a) wipe up spills at once (b) leave water on the floor (c) run around the tub (d) play near a deep pond
- 20.True or false: turmeric powder is not needed for the float-or-sink test. (a) False (b) True
- 21.True or false: a balloon is not needed for the float-or-sink test. (a) True (b) False
- 22.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the shape of the clay (b) whether it floats (c) the amount of clay (d) the kind of clay
- 23.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it can float (b) it sinks faster (c) it turns to stone (d) it dissolves
- 24.🧺 Do we need yeast for the float-or-sink test? (a) not needed (b) needed
- 25.⚖️ 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) True (b) False
- 26.🔮 A big log and a small pebble go into a pond. Which one floats? (a) the big log (b) neither of them (c) the small pebble (d) both of them
- 27.🛟 Does a pebble float or sink in water? (a) sinks (b) floats
- 28.⚖️ 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
- 29.🔍 Which is the odd one out? (a) an ice-cream stick (b) a feather (c) a cork (d) an iron nail
- 30.🛟 Which of these floats on water? (a) a pebble (b) an ice cube (c) a metal key (d) a steel spoon
- 31.🔍 Which is the odd one out? (a) a feather (b) a metal key (c) a ping-pong ball (d) a cork
- 32.True or false: a coin sinks in water. (a) False (b) True
- 33.True or false: small test objects is not needed for the float-or-sink test. (a) False (b) True
- 34.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a battery cell (d) small test objects
- 35.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 36.🧺 Which of these is needed for the float-or-sink test? (a) a results table (b) a mirror (c) turmeric powder (d) yeast
- 37.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
- 38.🧺 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) turmeric powder (d) a towel for spills
- 39.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a results table (c) a towel for spills (d) a mirror
- 40.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a balloon (b) a towel for spills (c) a results table (d) a tub of water
Answer key
- a cork
- True
- an ice-cream stick
- True
- sinks
- a ball of clay
- a magnet
- True
- we change it
- False
- needed
- we measure it
- not needed
- a magnet
- not needed
- a battery cell
- sinks
- lots of salt stirred in
- wipe up spills at once
- True
- True
- whether it floats
- it can float
- not needed
- True
- the big log
- sinks
- False
- an iron nail
- an ice cube
- a metal key
- True
- False
- small test objects
- needed
- a results table
- sinks
- turmeric powder
- a mirror
- a balloon
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