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