The ____ ascribes climate changes to variations in Earths orbit.
a. water vapor-greenhouse feedback
b. Maunder minimum
c. process of subduction
d. Theory of Plate Tectonics
e. Milankovitch theory
Q. 2When an oceanic plate encounters a lighter continental plate, it responds by ____.
a. pulling carbon dioxide out of the air
b. forming mountains
c. releasing gases into the atmosphere
d. a process called subduction
e. lowering global surface temperatures
Q. 3The fact that we find glacial features near sea level in Africa today, is explained by ____.
a. the Theory of Plate Tectonics
b. Milankovitch theory
c. the precession of Earths axis
d. the eccentricity of Earths orbit
e. changes in the obliquity of Earths orbit
Q. 4The slow shifting of the continents and the ocean floors is explained by ____.
a. Milankovitch theory
b. chemical weatheringCO2 feedback
c. the Theory of Plate Tectonics
d. the Maunder minimum
e. the greenhouse effect
Q. 5In the chemical weatheringCO2 feedback, as chemical weathering increases, ____.
a. the amount of CO2 in the atmosphere stabilizes
b. the amount of CO2 in the atmosphere decreases
c. the amount of CO2 in the atmosphere increases
d. Earths climate begins to warm
e. more water vapor evaporates from the oceans
Q. 6If Earth were in a warming trend, which of the processes below would most likely act as a negative feedback mechanism?
a. increasing the water vapor content of the air
b. increasing the snow cover around the Earth
c. decreasing the amount of low stratified cloud cover around the globe
d. increasing the carbon dioxide content of the air
e. decreasing the snow cover in middle and high latitudes
Q. 7If the Earth were in a cooling trend, which process below would most likely act as a positive feedback mechanism?
a. increasing the snow cover around the Earth
b. increasing the water vapor content of the air
c. decreasing the amount of low stratified cloud cover around the globe
d. increasing the carbon dioxide content of the air
e. decreasing snow cover in middle and high latitudes