Fluid Forces

Displacement means

• to take place
• to replace
• to fill up space 
• to move aside

This is the relationship between area and pressure 

• As area increases, the pressure increases
• As area increases, the pressure decreases.
• As area decreases, the pressure decreases
• They have no effect on each other

What causes the apparent weight loss of an object immersed in water?

• Gravity
• Buoyancy
• Newton's 1st law
• Newton's 2nd law

If an object displaces less water than its weight, the object will

• float
• accelerate
• create friction
• sink

If an object displaces more water than its weight, the object will

• float
• accelerate
• create friction
• sink

The weight of the water displaced equals the upward force of water on an object

• Pressure
• Inertia
• Archimedes' Principle
• The Law of Water

Why does a steel ship float, while a block of the same steel sinks?

• shape of object
• air is lighter than water
• the block's buoyancy is less than its weight
• all of the above

According to Bernoulli, as the speed of a fluid increases the pressure exerted by that fluid ___

• Decreases
• Disappears
• Increases
• Stays the same

Fluids can also include__ and__. 

• solids and liquids
• solids and gases
• liquids and gases
• liquids

Tags

NGSS.MS-ESS2-4

What is the unit of measurement for pressure?

• pascal
• grams
• milliters
• meters