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# Science Physics :)10

### 25 Definitions

The formula for pressure is— Pressure = ____________ Pressure=Force/Area
The SI unit of pressure is the Newton per square meter. (N/m2) This unit of pressure is also called the _______________. Pascals
_____________ is a force exerted over an area on the surface of an object. Pressure
A _________ is a material that can easily flow. Fluid
As your elevation increases, atmospheric pressure_______. Decreases
Water pressure ______________as depth increases. Increases
You can measure atmospheric pressure with an instrument called ______________. Barometer
The __________ force acts in the direction opposite to the force of gravity. Buoyant
___________ principle states that the buoyant force acting on a submerged object is equal to the weight of the fluid the object displaces. Pascal's
A ship floats on the surface as long as the buoyant force acting on it is equal to its __________. Weight
The ______ of a substance is its mass per unit volume. Density
The density of water is ____ g/cm3. 1 g/cm3
The formula for density: Density = _______ Mass/Velocity
If the density of an object is equal to the density of the fluid in which it is immersed, the object will__________. Neither rise nor sink
To make a submarine dive, water is taken into its tanks. The __________ density makes its weight greater than the buoyant force. Increased
_______ __________ is the force when applied to a confined fluid, the change in pressure is transmitted equally to all parts of the fluid. Pascals' principle
A ___________ system multiplies force by applying the force to a small surface area Hydraulic System
On December 17, 1903, the ______________ brothers plane flew for the first time. Wright Brothers
A fluid naturally flows from an area of ______ pressure to an area of ____ pressure. High; Low
_______________ principle states that as the speed of a moving fluid increases, the pressure with the fluid decreases. Bernoulli's Priciple
The 4 forces acting on an airplane are... Lift, Drag, Thrust, and Gravity
The pressure in a fluid decreases as the speed of the fluid increases is __________ __________. Bernoulli's Principle
Is our mixture of gases we call air a fluid? Yes, its like water
An increase in pressure on a confined fluid is transmitted equally to all parts of the fluid is know as _______ __________. Pascal's Principle
The buoyant force equals the weight of the displaced fluid is _______ __________. Archimede's Principle