Aim: Describe Earth’s Structure
3 Spheres of the Earth
Lithosphere – Rock – Solid, outer shell made of rock and soil that
surrounds the earth. CRUST.
ESRT page 1 Composition:
Mostly Oxygen (46.10% by mass) and Silicon (28.20% by mass)
Density is between 2 – 3 g/cm3
Hydrosphere- Water – Liquid, H2O covers ~ 75% of Earth’s surface.
ESRT page 1 Composition:
66% Hydrogen
33% Oxygen
Density is 1.0 g/mL
Atmosphere – Air, Gas. TROPOSPHERE. Mostly NITROGEN Gas !
ESRT page 1 Composition :
78% Nitrogen
21% Oxygen
Very Low Density
Atmosphere is further divided into different layers, ESRT page 14…
What is Temp. at Tropopause? -55Celsius
What is Temp at Stratopause? 0 Celsius
What happens to Air Pressure as Altitude Increases? Decreases
(indirect)
What happens to the Concentration of Water Vapor as Altitude
Increases? Decreases ( indirect)
What is the Altitude in Miles at the Stratopause? 32miles
What is the Altitude in Km at the Stratopause? 50km
What layer is located 14 miles above Earth’s surface? Stratosphere
HW- Finish Handout, do Castlelearning