skip to main content

Sink or Float?

2 minutes

(Describer) The title’s held up on signs in front of a tank.

(child narrating) Sometimes things float in water, like you on a raft in the swimming pool. Sometimes they sink like these rocks. Let's experiment to see what will sink and what will float in this fish tank. We'll chart our results to keep track of what we learn. Do you think this nickel will sink or float?

(Describer) It’s dropped in the water.

It sinks. Do you think these marbles will sink or float? They sink too. What about this balloon? It floats. Do you think this crayon will sink or float? It sinks. Do you think this pumpkin will sink or float?

(Describer) It’s a small one. It’s dropped in.

It floats. What about this sponge? It floats. How about this toy?

(Describer) A plastic wind-up bear. It’s dropped in.

[clanging]

It sinks. Let's look at our chart. Why do you think some items sink and some items float?

(Describer) Accessibility provided by the US Department of Education.

Transcript Options


Now Playing As: Captioned (English) (change)

Report a Problem

Students learn the concept of buoyancy. In a series of demonstrations, students will make a guess about whether they think an item will sink or float. The items are dropped into a fish tank, and the results are charted. Part of the "Everyday Science for Preschoolers" series.

Media Details

Runtime: 2 minutes

Everyday Science for Preschoolers
Episode 1
2 minutes
Grade Level: Ps - 3
Everyday Science for Preschoolers
Episode 2
2 minutes
Grade Level: K - 2
Everyday Science for Preschoolers
Episode 3
2 minutes
Grade Level: K - 3
Everyday Science for Preschoolers
Episode 4
2 minutes
Grade Level: Ps - 3
Everyday Science for Preschoolers
Episode 5
2 minutes
Grade Level: 2 - 5
Everyday Science for Preschoolers
Episode 6
2 minutes
Grade Level: 2 - 5
Everyday Science for Preschoolers
Episode 7
2 minutes
Grade Level: 2 - 5
Everyday Science for Preschoolers
Episode 8
1 minute
Grade Level: 2 - 5
Everyday Science for Preschoolers
Episode 9
2 minutes
Grade Level: K - 4