ratio of actual amount of water vapour in the air compared to the maximum amount it could hold (as a percentage)

RH can change in two ways

add or subtract moisture or the air's maximum capacity changes

pressure is the force per unit area the particle exerts on some surface. Pressure of the air is dependent on the density of the air (how many particles impacting) and the energy of the air (how often and hard the particles hit)

An extension of the density layered earth. Based on composition and density affecting temperature changes

Atmosphere is very thin. Temperature rises due to absorption of sun's UV and x-radiation

Atmosphere is very thin and cools to about -90 degrees.

Contains most of Earth's ozone. Rising temperature due to ozone's absorption of UV

Lowest layer of atmosphere (closest to earth). Comprises 75% of all air and 95% of all water. It's where we leave and where weather happens

Layers of the atmosphere from closest to us to furthest

Troposphere, stratosphere, mesosphere, thermosphere Tree, Santa, me, there

The greenhouse metaphor

short wavelength, high energy radiation travels through the glass. High energy radiation warms up the ground/plants inside. Ground and plants radiate long wavelength, lower E. Glass is opaque to IR and reflects IR. Warm air not allowed to convect

How is the greenhouse metaphor wrong?

portrays the atmosphere as opaque to IR radiation. This is wrong

Certain molecules absorb IR radiation (H2O, CO2, CH4 etc) they later radiate (NOT REFLECT) energy if it is cool enough. Slows how quickly energy leaves the planet allowing it to warm

increased molecular motion->increased volume->decreased density->decreased pressure

lower density->lower pressure->higher energy

hot air balloon example

air is hotter and becomes less dense, cooler denser air moves toward the low pressure area, displacing it upward

How can we create areas of high and low pressure?

Water has very high specific heat capacity. Soil has comparatively lower specific heat. With equal sunlight, water heats up far slower than land. When sun is not shining, water cools down far slower than land. Convection moves E from high to low

How ELSE can we create areas of high and low pressure?

Amount of sunlight also plays a part (polar regions get less direct sunlight-not as warm). equatorial regions get more direct sunlight-warmer

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Earth final 2

Question	Answer
Relative humidity	ratio of actual amount of water vapour in the air compared to the maximum amount it could hold (as a percentage)
RH can change in two ways	add or subtract moisture or the air's maximum capacity changes
buoyant force	increases as volume increases
What is air pressure	pressure is the force per unit area the particle exerts on some surface. Pressure of the air is dependent on the density of the air (how many particles impacting) and the energy of the air (how often and hard the particles hit)
Denser air is	high pressure air
The atmosphere is about	1.6% of Earth's radius
The atmosphere	An extension of the density layered earth. Based on composition and density affecting temperature changes
Thermosphere	Atmosphere is very thin. Temperature rises due to absorption of sun's UV and x-radiation
Mesosphere	Atmosphere is very thin and cools to about -90 degrees.
Stratosphere	Contains most of Earth's ozone. Rising temperature due to ozone's absorption of UV
Troposphere	Lowest layer of atmosphere (closest to earth). Comprises 75% of all air and 95% of all water. It's where we leave and where weather happens
Layers of the atmosphere from closest to us to furthest	Troposphere, stratosphere, mesosphere, thermosphere Tree, Santa, me, there
The greenhouse metaphor	short wavelength, high energy radiation travels through the glass. High energy radiation warms up the ground/plants inside. Ground and plants radiate long wavelength, lower E. Glass is opaque to IR and reflects IR. Warm air not allowed to convect
How is the greenhouse metaphor wrong?	portrays the atmosphere as opaque to IR radiation. This is wrong
Corrected metaphor	Certain molecules absorb IR radiation (H2O, CO2, CH4 etc) they later radiate (NOT REFLECT) energy if it is cool enough. Slows how quickly energy leaves the planet allowing it to warm
higher energy	increased molecular motion->increased volume->decreased density->decreased pressure
higher humidity	lower density->lower pressure->higher energy
hot air balloon example	air is hotter and becomes less dense, cooler denser air moves toward the low pressure area, displacing it upward
How can we create areas of high and low pressure?	Water has very high specific heat capacity. Soil has comparatively lower specific heat. With equal sunlight, water heats up far slower than land. When sun is not shining, water cools down far slower than land. Convection moves E from high to low
How ELSE can we create areas of high and low pressure?	Amount of sunlight also plays a part (polar regions get less direct sunlight-not as warm). equatorial regions get more direct sunlight-warmer
The result of focused heating

Created by: user-1996284

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