Question 1
The atmosphere is most efficient in absorbing ________ wavelengths of terrestrial radiation.
◦ shorter
◦ longer
◦ X-ray
◦ medium range
Question 2
The line separating the dark half of Earth from the lighted half is called the ________.
◦ Antarctic Circle
◦ Tropic of Cancer
◦ International date line
◦ Circle of Illumination