Density and Buoyancy Quiz Review

The tool used to measure the mass of a substance or object is a ______________.

• balance
• graduated cylinder
• ruler
• thermometer

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Tags

CCSS.7.RP.A.3

What is the volume of Object X?

• 10.0 cm³
• 15.0 cm³
• 20.0 cm³
• 25.0 cm³

Tags

CCSS.HSG.MG.A.2

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

When an object is immersed in a fluid, it pushes the fluid out of the way and takes its place. This is ...

• Gravity

• Sinking

• Fish

• Displacement

An example of neutral buoyancy would be

• a fish swimming in the ocean

• A rowboat

• a rock a the bottom of the lake

• A scuba diver sitting in a boat

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. 

An object will NOT sink if its weight is ______ ______ _____ ______ ______ the buoyant force.

• Less than or equal to
• Greater than or equal to
• Similar to and almost equal
• Different from and almost equal

What is buoyant force?

• A downward pushing force that a fluid pushes on an object

• A force that causes an object to sink

• A upward pushing force that a fluid pushes on an object

• The same as gravity

How do we calculate density? (with correct units!)

• D = m/v (in g/mL or g/cm3)
• D = v/m (in g/mL or g/cm2) 
• D=m/v (in mL/g or cm3/g)