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? True or false: the amount of clay is kept the same. (a) False (b) True
- 2.🧺 Which of these is needed for the float-or-sink test? (a) yeast (b) a magnet (c) a battery cell (d) small test objects
- 3.True or false: an ice-cream stick floats on water. (a) False (b) True
- 4.🧺 Which of these is not needed for the float-or-sink test? (a) small test objects (b) a magnet (c) a towel for spills (d) a tub of water
- 5.🛟 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) play near a deep pond (d) run around the tub
- 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) the tub of water (b) the kind of clay (c) the amount of clay (d) the shape of the clay
- 7.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a results table (c) turmeric powder (d) small test objects
- 8.🛟 Which of these sinks in water? (a) a metal key (b) a ping-pong ball (c) a piece of thermocol (d) a feather
- 9.True or false: a feather sinks in water. (a) False (b) True
- 10.⚖️ 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
- 11.🧺 Which of these is needed for the float-or-sink test? (a) a towel for spills (b) a balloon (c) yeast (d) a mirror
- 12.🌊 What pushes a floating cork upward? (a) the water (b) the cork itself (c) the air above (d) the tub
- 13.⚖️ 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 kind of clay (d) the amount of clay
- 14.True or false: a magnet is not needed for the float-or-sink test. (a) True (b) False
- 15.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a magnet (c) a results table (d) a tub of water
- 16.🔍 Which is the odd one out? (a) a steel spoon (b) a ball of clay (c) an ice cube (d) an iron nail
- 17.🛟 Which of these sinks in water? (a) a feather (b) a ping-pong ball (c) a glass marble (d) an ice cube
- 18.⚖️ 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
- 19.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it sinks faster (b) it turns to stone (c) it can float (d) it dissolves
- 20.🛟 Which of these floats on water? (a) an iron nail (b) a metal key (c) a steel spoon (d) a cork
- 21.🧺 Which of these is needed for the float-or-sink test? (a) a battery cell (b) a balloon (c) a tub of water (d) yeast
- 22.True or false: a results table is needed for the float-or-sink test. (a) False (b) True
- 23.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a towel for spills (c) a balloon (d) a tub of water
- 24.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it melts (b) it sinks (c) it turns blue (d) it floats higher
- 25.🧺 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) a mirror (d) small test objects
- 26.🔍 Which is the odd one out? (a) a pebble (b) a steel spoon (c) an empty capped bottle (d) a coin
- 27.True or false: a towel for spills is not needed for the float-or-sink test. (a) False (b) True
- 28.🔮 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
- 29.🧺 Which of these is not needed for the float-or-sink test? (a) a tub of water (b) a battery cell (c) a results table (d) a towel for spills
- 30.🔍 Which is the odd one out? (a) a piece of thermocol (b) a metal key (c) an iron nail (d) a pebble
- 31.🧺 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) a results table (d) a battery cell
- 32.🧺 Do we need a magnet for the float-or-sink test? (a) not needed (b) needed
- 33.🧺 Do we need turmeric powder for the float-or-sink test? (a) not needed (b) needed
- 34.🧺 Do we need a results table for the float-or-sink test? (a) not needed (b) needed
- 35.⚖️ 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) False (b) True
- 36.True or false: a battery cell is not needed for the float-or-sink test. (a) False (b) True
- 37.True or false: a tub of water is not needed for the float-or-sink test. (a) True (b) False
- 38.⚖️ 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
- 39.🚢 Why can a heavy steel ship float on the sea? (a) sea water is warm (b) it has a magnet (c) steel is very light (d) its hollow shape
- 40.⚖️ 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
Answer key
- True
- small test objects
- True
- a magnet
- wipe up spills at once
- the shape of the clay
- turmeric powder
- a metal key
- False
- True
- a towel for spills
- the water
- whether it floats
- True
- a magnet
- an ice cube
- a glass marble
- False
- it can float
- a cork
- a tub of water
- True
- a balloon
- it sinks
- a mirror
- an empty capped bottle
- False
- it still floats
- a battery cell
- a piece of thermocol
- a battery cell
- not needed
- not needed
- needed
- True
- True
- False
- True
- its hollow shape
- False
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