S1 Physics - Density & Buoyancy

What is the formula for density?

• Mass/Volume

• Volume/Mass

• Mass + Volume

• Mass × Volume

What does an object’s density depend on?

• The object’s mass and shape

• The object’s volume

• The object’s material

• The object’s temperature

What happens when an object is less dense than the fluid it’s placed in?

• It sinks

• It floats

• It dissolves

• It evaporates

Which of the following is an example of buoyancy?

• An object sinking in water

• An object floating on water

• The mass of an object

• The temperature of an object

What determines whether an object floats or sinks in a fluid?

• Shape

• Mass

• Density

• Color

Why do ships float?

• They are made of metal

• They have large hollow spaces that lower their overall density

• They are always buoyant

• They displace too much water

What happens when an object’s density is greater than the fluid?

• It floats

• It sinks

• It is neutral

• It evaporates

What principle explains buoyancy?

• Archimedes’ Principle

• Newton’s Laws

• The Law of Conservation of Mass

• Bernoulli’s Principle

What is the buoyant force?

• The force pushing an object upwards in a fluid

• The force of gravity acting on an object

• The weight of the object

• The friction between the object and the fluid

Which of the following can affect the buoyancy of an object?

• Its shape

• Its temperature

• The density of the fluid

• All of the above