ASTR 151 1st Edition Lecture 12 Outline of Last LectureI. Review for First ExamOutline of Current LectureII. Chapter 7 Structure of EarthIII. Chapter 7 Atmosphere of EarthCurrent LectureI. Chapter 7 Section 1 Structure of Eartha. Earthi. Mass= 6*10^24kgii. Radius = 6,371,000miii. Density = 5500kg/m^3b. Earth has:i. Mantleii. 2 part coreiii. Thin crustiv. Hydrospherev. Atmospherevi. Magnetospherevii. Troposphere1. Responsible for weatherII. Chapter 7 Section 2 Atmosphere of Eartha. Weather is the result of convectioni. Cool air goes down while warm air goes upb. Ionospherei. Ionized particles block solar radiationii. Good conductorc. Chlorinei. Reacts to the ozone layerd. Surface heatingi. Sunlight that isn`t reflected by Earth`s surface, warming it is absorbede. Greenhouse effecti. Without it, Earth`s temperature would drop to an average of 23 degreesThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.f. Why do we have a blue sky?i. Oxygen absorbs wavelength at the UV
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