Chapter 20 Gasses

Chapter 20Gasses

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The Atmosphere

and Its Pressure

Vocabulary BarometersBoyle’s Law

and Ideal Gas Law

Misc.

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The Atmosphere And It’s Pressure

$100This state of matter has molecules tat

are far apart and force free

What are Gasses?

The Atmosphere and It’s Pressure

$200Pressure is the product of force divided

by this.

What is Area?

The Atmosphere and It’s Pressure

$300This body has no definite surface and

it’s density varies with height.

What is the atmosphere

?

The Atmosphere and It’s Pressure

$400This unit is the amount of air pressure

under normal conditions, or 105 Pa.

What is an atmosphere?

The Atmosphere and It’s Pressure

$500A couch weighs 1030 N. It sits on a

platform that is 10m x 20m. How much pressure is the couch exerting

on the platform?

5.15 Pa

Vocabulary

$100This is an instrument used for

measuring atmospheric pressure.

What is a barometer?

Vocabulary

$200Liquids and gasses are both considered this six letter word.

What is fluids?

Vocabulary

$300This states that the product of pressure and volume for a given

mass of gas is a constant as long as temperature is constant.

What is Boyle’s Law?

Vocabulary

$400This law states that when the speed of

a fluid increases, the pressure drops.

What is Bernoulli’s Principle?

Vocabulary

$500This is the measure of the average kinetic energy of the particles in a

substance.

What is Temperature?

Barometers

$100A barometer is used to measure this

weather property.

What is Atmospheric Pressure?

Barometers

$200A simple barometer uses this element

(much like a thermometer) because of it unique pressure properties.

What is mercury?

Barometers

$300There are two types of

barometers, the simple barometer and this “without liquid”

barometer.

What is Aneroid?

Barometers

$400This substance could e used for a barometer, however the density is

much lower and would require a 10.3 m high tube.

What is water?

Barometers

$500. An altimeter is a special type of

aneroid barometer calibrated for this.

What is altitude?

Boyle’s Law & Ideal Gas Law

$100This is what N stands for in PV=NKBT.

What is Number of Molecules?

Boyle’s Law & Ideal Gas Law

$2001.38 x 10-23 J/K is known as this

constant or KB

What is Boltzmann’s Constant?

Boyle’s Law & Ideal Gas Law

$300Real gasses can be modeled after

these “perfect” gasses.

What are Ideal

gasses?

Boyle’s Law & Ideal Gas Law

$400Boyle’s Law states the relationship between pressure and this cubed unit

of measure.

What is volume?

Boyle’s Law & Ideal Gas Law

$500An oxygen bottle has an initial

pressure of 50 Pa with a volume of 300cm3. The air is then compressed into a volume of 230 cm3 . What is the new pressure exerted on the

bottle?

65.21 Pa

Misc.

$100Bernoulli’s Principle states that the pressure in a fluid decreases as the

fluid’s velocity does this.

What is Increases?

Misc.

$200Bernoulli’s principle is put into action on planes where the pressure above

the wing is higher than below it which produces an upward force

called this.

What is lift?

Misc.

$300This helps explain why pressure in tornadoes and hurricanes actually

have very low pressure.

What is Bernoulli’s Principle?

Misc.

$40099% of the atmosphere is below this

outermost layer made of mostly oxygen.

What is the O zone?

Misc.

$500A small piston on a lift has an area of .45 m2. A cement block weighing 13000 N sits on a rack mounted on

the large piston. The large piston has an area of 1.2 m2. How large a force must be applied to the small piston

to support the block?

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