14 terms

Greenhouse Effect

STUDY
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3 Greenhouse Gases
Carbon Dioxide, Methane, and water vapor
How does the greenhouse effect work?
Visible light is emitted through the sun and passes through the infrared-blocking greenhouse gases. The light then warms the surface of the earth and turns into infrared heat, which is then trapped in the atmosphere and reflected by greenhouse gases.
Radiation
energy that moves in waves
conduction
direct touch of molecules to a source of heat (i.e. a grill)
convection
molecules moving and taking their heat with them (i.e. steam)
anthropogenically
related to or caused by humans
Greenhouse Gas Lab
Bottles filled with water vapor, CO2, or methane were exposed to a desk lamp for 25 minutes (it was turned on for the first 15), and the temperatures of all were recorded every minute in celsius.
Carbon Footprint
The amount of CO2 added to the atmosphere by a single person per year
How do humans increase the amount of water vapor in the atmosphere?
As humans emit more CO2, the atmosphere gets warmer, which creates more water vapor, which the traps heat and warms the atmosphere even more.
Name 5 of the 9 types of evidence for climate change.
-sea levels rising
-global temp. rise
-warming oceans
-shrinking ice sheets
-declining Arctic Sea ice
-glacial retreat
-extreme events
-ocean acidification
-decreased snow cover
Effects our region is experiencing from climate change
-Increased drought, heat, and insect outbreaks
-Increased wildfires
-Declining water supplies
-Reduced agricultural yields
-Health impacts in cities due to heat
-Flooding + erosion in coastal areas
Albedo Effect
The fraction of radiation that is reflected back into space is known as albedo. *for example, if a=0.9, 90% of infrared radiation is reflected from a material (like snow)
Explain the ice-albedo feedback
1) Solar energy hits high-albedo snow and ice, and melts a little bit of it, turning into darker water.
2) The earth's overall albedo is increased, meaning there is an overall greater heat absorption.
3) The planet warms more, which causes more snow to melt, which restarts the process.
Why do darker colors warm faster than lighter colors?
Dark colored material (such as water) absorbs more solar/heat energy than light colored material (such as ice).
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