fluids at rest

If an object sinks in a fluid, _____.

• the density of the fluid is greater than the density of the object
• the density of the fluid is less than the density of the object
• the density of the fluid is equal to the density of the object
• density has nothing to do with whether an object sinks or floats, only which state of matter the object is

The upward force exerted by a fluid is called the...

• buoyancy force

• density force

• fluidity force

• normal force

What does viscosity mean?

• How close the particles are together.

• The amount of matter in a substance.

• How easily a fluid flows.

• How dense a fluid is.

Tags

NGSS.MS-PS3-4

Which principle do airplanes take advantage of to fly?

• Archimedes' Principle

• Bernoulli's Principle

• Pascal's Principle

Archimedes' Principle states that... 

• The buoyant force acting on an object equals the volume of the fluid displaced by the object. 
• The buoyant force acting on an object equals the weight (force of gravity) of the fluid displaced by the object.
• The buoyant force acting on an object will always be equal. 

What was the principle Archimedes discovered?

• Volume
• Density
• Buoyancy
• Gravity

Buoyancy is the tendency for objects to float in a fluid. Buoyancy pushes the opposite direction of...

• waves push.
• magnetic pull.
• the wind.
• gravity's pull

Tags

NGSS.MS-PS2-4

If an object is more effected by gravity's pull than by buoyancy's push it will...

• sink.
• float.

Tags

NGSS.MS-PS2-2