Buoyancy

What does it mean for an object to sink?

• It sits at the ground level below the surface water.

• It sits at the top of liquid.

Life jackets help people stay buoyant in water.

• False

• True

A cork is a...

• Floater

• Sinker

• Neutrally buoyant

which of these will float?

• 
• 

which of these is made to sink?

• 
• 

How could you make plastic sink and steel float?

• You can't 
• Change the shape and therefore surface area 
• Remove some mass 

Tags

NGSS.MS-ETS1-1

Order the following items from LEAST buoyant to MOST buoyant

• plastic bottle, rock, cork, submarine

• rock, submarine, plastic bottle, cork

• cork, plastic bottle, submarine, rock