Buoyancy and Archimedes Principle Quiz

Buoyant force is equal to

• the gravitational force.

• the volume of the object.

• the weight of the fluid displaced by the object.

• the density of the fluid.

Which of the following is true about a hot air balloon in flight?

• Air above it travels faster than below.

• It is weightless.

• The density of the hot air balloon is less than the density of the air.

• It's magic. Pure magic.

Tags

NGSS.MS-PS2-2

When the buoyancy force is ________ the weight of an object, it will float.

• equal to

• less than

• greater than

• twice

When the weight of an object is MORE than the buoyant force, the object will:

• Sink

• Rise

• Float

• Fly

A pool toy is floating on the surface of the pool. This means

• The object's weight is GREATER than the buoyant force

• The object's weight is LESS than the buoyant force

• The object's weight is EQUAL to the buoyant force

• nobody actually knows why this happens

Archimedes principle states:

• The force of buoyancy of an object equals the weight of displaced fluid.

• If density of an object is less than the fluid it is in, it will float.

• Density equals mass divided by volume.

• If the buoyancy force equals the weight of an object, it will float.

If the weight of displaced water is more than the weight of an object, the object will sink

• True

• False

The UPWARD force on an object in water?

• thrust

• weight

• friction

• buoyancy

Tags

NGSS.MS-PS2-2

The DOWNWARD force of a floating object.

• thrust

• weight

• buoyancy

• friction

Tags

NGSS.MS-PS2-4

What happens to the water level of a bathtub when you take your rubber ducky bath toys out?

• Rises

• Drops

• Remains the same

• Wait. Does everyone have rubber duckies or just me?