Earth's Spheres (Week 3 Lecture 3) Flashcards
What are the 4 spheres of the earth?
Atmosphere, biosphere, hydrosphere, and lithosphere
What are the 4 unique layers of the atmosphere?
Troposphere, stratosphere, mesosphere and thermosphere
What is the atmosphere primarily composed of?
Nitrogen and oxygen
True or False: The thermosphere is completely cloudless and free of water vapour.
True
True or False: In the THERMOSPHERE, temperature gradually decreases with height.
False, temperature gradually increases with height.
Aurora borealis and aurora australis are seen in what component of the atmosphere?
Thermosphere (Northern Lights)
______ is the region above the stratosphere and below the thermosphere.
Mesosphere
True or False: In the MESOSPHERE, temperatures drop with increasing altitude to themesopausethat marks the top of this layer.
True
What is the component of the atmosphere where meteors burn up?
Mesosphere
______ lies above the troposphere and is separated from it by thetropopause.
Stratosphere
What component of the atmosphere contains the ozone layer?
Stratosphere
What causes the increase in temperature in the stratosphere?
UV radiation
______ is the lowest layer of Earth’s atmosphere, extends from Earth’s surface to an average height of about 12k.
Troposhpere
Why does temperature usually decline in the troposphere?
Troposphere is mostly heated through energy transfer from the surface.
The ______ contains roughly 80% of themassof Earth’s atmosphere.
Trophosphere
`What are the 4 negative impacts human have on the atmosphere?
Aerosols, driving cars, factories and burning tires/garbage
What are the 3 positive impacts humans have on the atmosphere.
Hybrid vehicles, alternative power, planting trees
The ______ The biosphere is the “life zone” of the Earth, and includes all living organisms (including humans), and all organic matter that has not yet decomposed.
Biosphere
The ______ contains all the water found on our planet.
Hydrosphere
What percent of water is freshwater and what percent of the freshwater is frozen?
3%, 70%
What are the 6 negative impacts that humans impose on the hydrosphere?
Dumping in ocean Driving Boats Oil spills Building on Shorelines Overfishing Building dams
What are the 2 positive impacts that humans impose on the hydrosphere?
Sewage treatment plants
Fish sanctuaries
The ______ is the solid outer layer of the earth that includes the crust and the uppermost mantle.
Lithosphere
The lithosphere is subdivided into______ ______.
Tectonic plates
True or False: The uppermost part of the lithosphere that chemically reacts to theatmosphere,hydrosphere, andbiosphere.
True
What are the 5 negative impacts humans impose on the lithosphere?
Mining Littering Construction Deforestation Pesticides
What are the 4 positive impacts humans impose on the lithosphere?
Composting
Conservation Areas
Planting Trees
Gardening/Green rooftops
