1. List the four main important dates in the Earth-sun relationship, and tell where the subsolar point is on each date
2 Describe how daylength on the solstices changes with latitude, and name the range of latitudes where there is 24 hours of light or darkness on the solstices.
3 Tell why temperature varies with the time of year (2 main factors), and identify how the seasons correspond with the parahelion and aphelion.
4 Describe how temperature varies with latitude in the summer and winter in North America. Which season has the largest spatial gradient in temperature? Why?
5 Tell how the amount and wavelength of radiation emitted by an object depends on its temperature.
6 Describe three ways to change the Earths' climate. Give examples of each.
7 Write the chemical equations for photosynthesis and respiration, and use those equations to show how a forest at equilibrium has little impact on oxygen content of the atmosphere.
8. Describe how deforestation and fossil fuel combustion impact Earth's O2 and CO2 budgets, and what importance the changes have for life (O2) or the climate (CO2).
9. List two ways humans have affected the albedo of the Earth.
10. List the main greenhouse gases. Identify the most important anthropogenic GHG and the most important natural GHG.