A great circle:
a. divides Earth into two planes of any size
b. is the dividing line between day and night
c. connects the Tropic of Cancer and the Tropic of Capricorn
d. divides Earth into two equal halves
Question 2
Why are digital images generally used instead of photographs in satellite remote sensing?
a. Digital images are protected from the possibility of sharing sensitive data.
b. Digital images have a fixed resolution.
c. Digital images are processed once, simultaneously as they are taken.
d. Digital image data can be beamed back electronically from space, and can reproduce a wider part of the spectrum than photos can.
The geological timescale and an overview of the history of life on Earth
Changes in Earth's atmospheric carbon dioxide levels over geological time.
Continuous, Absorption Line, and Emission Line Spectra
How Orbital Eccentricity Changes the Amount of Solar Radiation Earth Receives
Bird carved from soapstone, Great Zimbabwe, Zimbabwe.
Practicing Planes & Sections