Sci 8 Unit A Lesson 9 Density

Which units of measurement are used for volume?

• grams
• centimeters
• grams/milliliter
• milliliter

Tags

CCSS.3.MD.A.2

What is the formula for density?

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

A brick sinks in water while a wooden block of the same size floats.  This is because the brick has a

• lower volume than the wooden block
• lower density than the wooden block
• higher volume than the wooden block
• higher density than the wooden block

An object will rise up in a fluid if

• Gravity and buoyant force equal

• Density of object and fluid is equal

• the buoyant force is stronger than gravity

• if the density of the object is greater than the fluid

An object will sink in a fluid if

• gravity is stronger than buoyant force

• buoyant force is stronger than gravity

• a fluid can be a gas or a liquid

• if the object is solid

Tags

NGSS.MS-PS2-2

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

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

If a boat weighs 500 N. It moves 500 N water when it goes into the ocean. It will

• sink

• tip over

• float

• move faster

If an object displaces more fluid than the weight of the object, will the object sink or float?

• Sink
• Float