GEOG 101! Intro to Physical Geography Interaction of Energy with Earth Please an
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GEOG 101! Intro to Physical Geography Interaction of Energy with Earth Please answer the following questions in your own words I would suggest using a pencil so you Name can erase and all answers need to be in complete sentences Would a glacier have a high or low albedo? (Section 2.2, Page 37). And, how would the melting of glaciers change Earth's albedo and change our global temperature? 1. 2. What characteristic of the Sun's energy allows it to easily pass through the atmosphere when coming to Earth from the sun, but be partially trapped by the atmosphere when it is re-emitted from Earth? What is the name for this overall phenomenon and why is it important? What is currently "off balance" with the greenhouse effect? : Planet Gertrude has an atmosphere that is 53% Nitrogen, 25% Carbon dioxide, 21% Oxygen. and 1% other variable gases. How would its climate be different from Earth's? Why? (You can find Earth's atmospheric gases and their concentrations in your notes, or Page 17 in your book.) 4. What is the difference between sensible heat and latent heat? (Section 2.1, Page 34)Explanation / Answer
1)
Glaciers have low albedo, because they act like black body. When they melt, they will have high albedo, causing the global temperature to rise.
2)
While entering, the energy of radiation is high on an average. So, it penetrates the atmosphere relatively easy. But after reflection, its energy is low. On top of that, greenhouse gases make it even difficult for them to escape by trapping (absorbing) them.
3)
since CO2 is a greenhouse gas, higher concentration of it would mean the planet Gertrude has a very high atmospheric temperature, compared to earth, that has only 0.03% CO2
4)
Sensible heat is responsible to change the temperature of a body.
Latent heat is responsible to change the physical state of the body (but doesn't affect the temp)
Eg. If ice is at -5C. Sensible heat will bring it to 0C. At 0C the ice will start to melt into water, but its temperature will remain 0 only.
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