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 tub of water is kept the same. (a) False (b) True
- 2.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) yeast (c) small test objects (d) a results table
- 3.⚖️ 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) the shape of the clay (c) the amount of clay (d) whether it floats
- 4.🛟 Does an iron nail float or sink in water? (a) sinks (b) floats
- 5.🛟 Which of these sinks in water? (a) a cork (b) a ping-pong ball (c) an empty capped bottle (d) a pebble
- 6.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a mirror (c) a results table (d) turmeric powder
- 7.⚖️ 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 shape of the clay (c) whether it floats (d) the tub of water
- 8.True or false: a tub of water is needed for the float-or-sink test. (a) False (b) True
- 9.🧺 Do we need turmeric powder for the float-or-sink test? (a) needed (b) not needed
- 10.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) a balloon (c) a results table (d) a towel for spills
- 11.🛟 Does an empty capped bottle float or sink in water? (a) floats (b) sinks
- 12.🛟 Which is the safe way to do the float-or-sink test? (a) run around the tub (b) leave water on the floor (c) play near a deep pond (d) wipe up spills at once
- 13.True or false: yeast is 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? What do we do with “whether it floats”? (a) we keep it the same (b) we change it (c) we measure it
- 15.🧺 Which of these is needed for the float-or-sink test? (a) a magnet (b) a balloon (c) a towel for spills (d) a mirror
- 16.🛟 Which of these floats on water? (a) an iron nail (b) a pebble (c) a steel spoon (d) an ice-cream stick
- 17.🛟 Which of these sinks in water? (a) a ping-pong ball (b) an empty capped bottle (c) an ice cube (d) a ball of clay
- 18.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) small test objects (b) yeast (c) a tub of water (d) a results table
- 19.🧺 Do we need a battery cell for the float-or-sink test? (a) needed (b) not needed
- 20.🔍 Which is the odd one out? (a) a metal key (b) a pebble (c) a coin (d) an empty capped bottle
- 21.True or false: an ice cube floats on water. (a) True (b) False
- 22.True or false: a ping-pong ball sinks in water. (a) True (b) False
- 23.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) a cork (d) a glass marble
- 24.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a mirror (b) a tub of water (c) a towel for spills (d) small test objects
- 25.🔍 Which is the odd one out? (a) a pebble (b) a metal key (c) an iron nail (d) an ice-cream stick
- 26.🧺 Which of these is not needed for the float-or-sink test? (a) a towel for spills (b) a tub of water (c) small test objects (d) a magnet
- 27.🛟 Which of these floats on water? (a) an ice cube (b) a metal key (c) a coin (d) a pebble
- 28.🛟 Which of these sinks in water? (a) a ping-pong ball (b) a metal key (c) a cork (d) an empty capped bottle
- 29.True or false: a magnet is needed for the float-or-sink test. (a) True (b) False
- 30.🧺 Do we need a towel for spills for the float-or-sink test? (a) not needed (b) needed
- 31.🔍 Which is the odd one out? (a) a cork (b) a ball of clay (c) a piece of thermocol (d) a dry leaf
- 32.⚖️ 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
- 33.⚖️ 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 change it (c) we measure it
- 34.🚢 Why can a heavy steel ship float on the sea? (a) its hollow shape (b) steel is very light (c) it has a magnet (d) sea water is warm
- 35.🔮 A ball of clay sinks. What happens if you press it into a thin boat shape? (a) it dissolves (b) it can float (c) it turns to stone (d) it sinks faster
- 36.🧺 Three of these are needed for the float-or-sink test. Which one is NOT needed? (a) a results table (b) a towel for spills (c) a battery cell (d) small test objects
- 37.🧺 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) small test objects
- 38.⚖️ 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) True (b) False
- 39.🔍 Which is the odd one out? (a) a cork (b) an empty capped bottle (c) a steel spoon (d) an ice-cream stick
- 40.🛟 Does a glass marble float or sink in water? (a) floats (b) sinks
Answer key
- True
- yeast
- the shape of the clay
- sinks
- a pebble
- a results table
- whether it floats
- True
- not needed
- a balloon
- floats
- wipe up spills at once
- False
- we measure it
- a towel for spills
- an ice-cream stick
- a ball of clay
- yeast
- not needed
- an empty capped bottle
- True
- False
- a cork
- a mirror
- an ice-cream stick
- a magnet
- an ice cube
- a metal key
- False
- needed
- a ball of clay
- False
- we keep it the same
- its hollow shape
- it can float
- a battery cell
- a magnet
- True
- a steel spoon
- sinks
Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids