Earth’s Natural Radiation Balance Questions Possible Answers What process fuels the sun? Fusion The electromagnetic spectrum ranges from ___________ to _____________. Longwave radiation to shortwave What is the difference between near infrared radiation and thermal infrared radiation? Near infrared reflects the solar radiation Thermal shows heat Using Wien's law, a typical Earth surface at about 17°C (290°K) emits radiation at a peak of about ___________ What's the peak wavelength of emission for the sun with surface temperature of about 6000°K? 10 .48 Does a colder body emit more intense radiation than a hotter body? yes Earth undergoes a revolution once every __________ on the plane of the _________. 365.25 days on the plane of the ecliptic Earth is about 3 million miles closer to the sun in _________ (called __________) than in __________ (called __________). Closer in January (perihelion) Farther in (July) Aphelion Looking down at the North Pole, Earth rotates in a _____________ direction, once every ___________. Counterclockwise Once every 24 hours How much does Earth's axis tilt? 23.5 degrees Draw the equator, Tropic of Cancer, Tropic of Capricorn, Arctic Circle, and Antarctic Circle, and label the latitudes. Then, trace the location of the subsolar point throughout the year on this drawing. Be sure to identify the location of the subsolar points on the solstices and equinoxes. Tilt changes what two key factors to cause seasons? Short ________ and low ___________ are the cause of winter. Solar elevation (sun angle) and the length of day Short days and low elevation What is the angle of the sun at noon at ASU on each equinox and each solstice? What latitude(s) would you go to party all NIGHT long (24 hours) on June 22nd? the Antarctic Circle Where would you go to experience 12 hours of night and day every single day of the year? The equator What times of year would all latitudes experience 12 hours of night and day? Equinoxes What latitudes would experience the subsolar point twice in a year? What latitudes would experience the subsolar point once in a year? What latitudes would never experience the subsolar point? all latitudes between the tropic of Cancer and the Tropic of Capricorn The Tropic of Cancer and the Tropic of Capricorn all latitudes poleward of the Tropics
If you are north of the Tropic of Cancer, the sun at noon would always be in the _______ part of the sky, casting a shadow to the _________. South North Earth's atmosphere Questions Possible Answers What gases make up more than 95% of Earth's atmosphere? Permanent Gases- nitrogen, oxygen and argon What gas varies the greatest from place to place next to Earth's surface? Water vapor Dust particles have the tendency to change the temperature of Earth's surface. In what direction? How do they do this? Scatter solar radiation
This is the end of the preview. Sign up to
access the rest of the document.