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