a.
What is density?
The ratio of Mass to Volume
The amount of force exerted on a given area is?
Pressure
What happens to atmospheric pressure the farther down into the atmosphere you go?
It gets greater
What is drag?
a force that opposes motion in a fluid
What is the equation to find pressure?
hint: 2 ways to say / write it
Pressure= Force/Area or Force divided by Area
What is a fluid?
Any material that flows and takes the shape of its container
The pressure caused by the atmosphere?
Atmospheric pressure
What is the upward force that keeps an object floating or immersed in a liquid?
Buoyant force
What is turbulence?
the irregular flow of motion of the liquid
What 3 factors can affect density?
Mass, Volume, and Shape
Fluids always flow from?
Hint: has to do with pressure
high to low pressure
What gasses make up the atmosphere?
hint: there are 4
nitrogen, oxygen, hydrogen, and carbon dioxide
For an object to float the weight of the object must?
it has to weigh less than or equal to the buoyant force of the water
What is thrust?
the forward movement of an object, usually caused by engines
What 5 forces act on an airplane?
Lift, thrust, drag, turbulence, and gravity
What does the Archimedes’ Principle state?
the buoyant force on an object
Why cant we feel atmospheric pressure?
the fluids in our body adjust to the pressure
Why is water pressure more thain air pressure?
water is more dense than air
What is lift?
an upward force on an object
What does Pascal’s Principle state?
A fluid contained inside a vessel creates equal pressure in all directions
What is the SI unit for pressure?
Hint: 2 ways to say/write it
Pascal / Pa
True or False: The weight of air pressure in a room is equal to the weight of an average adult male?
True
Which principle states that the upward force of a fluid increases as the fluid’s speed increases?
Bernoulli's principle
What states of matter can be a fluid?
Liquids and Gasses
Why are bubbles round?
The air pressure pushes outward and equally or there is equal pressure on all sides