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.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 2.🧺 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
- 3.⚖️ Fair test — does the shape of a lump of clay change whether it floats? Which of these is what we measure? (a) the amount of clay (b) whether it floats (c) the tub of water (d) the kind of clay
- 4.🛟 Which of these floats on water? (a) an iron nail (b) an ice cube (c) a metal key (d) a steel spoon
- 5.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
- 6.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “whether it floats”? (a) we keep it the same (b) we measure it (c) we change it
- 7.🔍 Which is the odd one out? (a) a coin (b) a glass marble (c) an ice-cream stick (d) a steel spoon
- 8.🧺 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 towel for spills (d) turmeric powder
- 9.🛟 Which of these sinks in water? (a) a dry leaf (b) an ice cube (c) a metal key (d) an ice-cream stick
- 10.🔍 Which is the odd one out? (a) a ping-pong ball (b) a glass marble (c) an iron nail (d) a pebble
- 11.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a battery cell (b) a results table (c) a tub of water (d) small test objects
- 12.⚖️ 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
- 13.True or false: a steel spoon sinks in water. (a) True (b) False
- 14.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
- 15.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) a balloon (d) small test objects
- 16.⚖️ 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
- 17.🧊 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
- 18.🧺 Do we need a balloon for the float-or-sink test? (a) needed (b) not needed
- 19.🛟 Why should a grown-up watch when children play near a big tub of water? (a) to splash everyone (b) to keep children safe (c) to hide the corks (d) to win a prize
- 20.⚖️ 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 amount of clay (c) whether it floats (d) the shape of the clay
- 21.🔍 You drop a coin into a tub of water. What do you see? (a) it bounces up (b) it floats (c) it dissolves (d) it sinks
- 22.True or false: a battery cell is not needed for the float-or-sink test. (a) True (b) False
- 23.🛟 Does a coin float or sink in water? (a) floats (b) sinks
- 24.True or false: a ball of clay floats on water. (a) True (b) False
- 25.🔍 Which is the odd one out? (a) an empty capped bottle (b) a piece of thermocol (c) a ping-pong ball (d) a coin
- 26.🔍 Which is the odd one out? (a) an ice-cream stick (b) a cork (c) a piece of thermocol (d) a ball of clay
- 27.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
- 28.🧺 Do we need a magnet for the float-or-sink test? (a) needed (b) not needed
- 29.🧺 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 towel for spills (d) a results table
- 30.True or false: a mirror is needed for the float-or-sink test. (a) False (b) True
- 31.True or false: turmeric powder is needed for the float-or-sink test. (a) True (b) False
- 32.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) a balloon (d) a results table
- 33.True or false: a ping-pong ball floats on water. (a) True (b) False
- 34.🛟 Which of these sinks in water? (a) a glass marble (b) a dry leaf (c) an ice cube (d) a ping-pong ball
- 35.⚖️ 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
- 36.🛟 Which is the safe way to do the float-or-sink test? (a) play near a deep pond (b) wipe up spills at once (c) leave water on the floor (d) run around the tub
- 37.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) yeast (b) a tub of water (c) a towel for spills (d) a results table
- 38.🛟 Does a metal key float or sink in water? (a) floats (b) sinks
- 39.🔍 Which is the odd one out? (a) a ball of clay (b) a coin (c) a feather (d) an iron nail
- 40.🔍 Which is the odd one out? (a) a feather (b) a steel spoon (c) a dry leaf (d) a cork
Answer key
- needed
- a balloon
- whether it floats
- an ice cube
- not needed
- we measure it
- an ice-cream stick
- turmeric powder
- a metal key
- a ping-pong ball
- a battery cell
- False
- True
- True
- small test objects
- we change it
- ice is less dense
- not needed
- to keep children safe
- the shape of the clay
- it sinks
- True
- sinks
- False
- a coin
- a ball of clay
- sinks
- not needed
- a mirror
- False
- False
- a balloon
- True
- a glass marble
- True
- wipe up spills at once
- yeast
- sinks
- a feather
- a steel spoon
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