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