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.True or false: a ping-pong ball floats on water. (a) True (b) False
- 2.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) it has a magnet (c) sea water is warm (d) steel is very light
- 3.🛟 Does a feather float or sink in water? (a) floats (b) sinks
- 4.⚖️ Fair test — does the shape of a lump of clay change whether it floats? True or false: the tub of water is the one thing we change. (a) False (b) True
- 5.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
- 6.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) small test objects (c) turmeric powder (d) a tub of water
- 7.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a towel for spills (b) small test objects (c) a tub of water (d) a battery cell
- 8.⚖️ 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) whether it floats (c) the amount of clay (d) the shape of the clay
- 9.⚖️ 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
- 10.🛟 Which of these floats on water? (a) an ice-cream stick (b) a coin (c) a glass marble (d) a metal key
- 11.🧺 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
- 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 measure it (b) we change it (c) we keep it the same
- 13.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a tub of water (b) small test objects (c) a results table (d) a mirror
- 14.🧺 Do we need a mirror for the float-or-sink test? (a) not needed (b) needed
- 15.🛟 Which of these sinks in water? (a) a piece of thermocol (b) a cork (c) an ice cube (d) a metal key
- 16.🔍 Which is the odd one out? (a) an ice-cream stick (b) an empty capped bottle (c) a ping-pong ball (d) a metal key
- 17.🔍 You drop a coin into a tub of water. What do you see? (a) it floats (b) it bounces up (c) it dissolves (d) it sinks
- 18.True or false: a battery cell is needed for the float-or-sink test. (a) False (b) True
- 19.True or false: an empty capped bottle floats on water. (a) False (b) True
- 20.🧺 Do we need a battery cell for the float-or-sink test? (a) not needed (b) needed
- 21.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) run around the tub (c) wipe up spills at once (d) leave water on the floor
- 22.🔮 A cork floats in tap water. What happens in very salty water? (a) it dissolves (b) it turns white (c) it sinks (d) it still floats
- 23.🛟 Does a ball of clay float or sink in water? (a) sinks (b) floats
- 24.⚖️ 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
- 25.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the tub of water”? (a) we change it (b) we keep it the same (c) we measure it
- 26.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a tub of water (c) a magnet (d) a towel for spills
- 27.🔮 A big log and a small pebble go into a pond. Which one floats? (a) both of them (b) the big log (c) neither of them (d) the small pebble
- 28.🛟 Does a dry leaf float or sink in water? (a) sinks (b) floats
- 29.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) a tub of water (d) a battery cell
- 30.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the tub of water (b) whether it floats (c) the shape of the clay (d) the amount of clay
- 31.⚖️ 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
- 32.⚖️ 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 tub of water
- 33.🔍 Which is the odd one out? (a) an iron nail (b) a glass marble (c) a cork (d) a metal key
- 34.⚖️ 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 change it (c) we measure it
- 35.🛟 Which of these floats on water? (a) a coin (b) an ice cube (c) a glass marble (d) a metal key
- 36.🔍 Which is the odd one out? (a) an ice-cream stick (b) a coin (c) a piece of thermocol (d) an empty capped bottle
- 37.🧺 Do we need a towel for spills for the float-or-sink test? (a) needed (b) not needed
- 38.⚖️ 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) False (b) True
- 39.🔍 Which is the odd one out? (a) an ice cube (b) a cork (c) an ice-cream stick (d) a steel spoon
- 40.True or false: turmeric powder is not needed for the float-or-sink test. (a) True (b) False
Answer key
- True
- its hollow shape
- floats
- False
- True
- turmeric powder
- a battery cell
- the shape of the clay
- True
- an ice-cream stick
- a balloon
- we measure it
- a mirror
- not needed
- a metal key
- a metal key
- it sinks
- False
- True
- not needed
- wipe up spills at once
- it still floats
- sinks
- False
- we keep it the same
- a magnet
- the big log
- floats
- a tub of water
- whether it floats
- we keep it the same
- the tub of water
- a cork
- we change it
- an ice cube
- a coin
- needed
- False
- a steel spoon
- True
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