Planetary Geology and The Spectral Sequence and the HR Diagram

VIRTUAL ASTRONOMY LABORATORIES

Chapter 5

Exercise 1 (a ) Earth (b ) p-wave (c ) 6000 K (d ) 2900 km (e ) 0 .9e 1 kg

Exercise 2 (a ) mantle (b ) yes (c ) 450 km (d ) 5 .3 km /s

Exercise 3 (a ) Antarctica (b ) Plate boundaries are associated with sea floor aging (except in South-East Asia , formation of volcanoes (in some parts of plate boundaries , and occurence of earthquakes (c ) false (d ) plate on west side (e ) Because Japan is located in or near subduction zones and fault lines where plates collide causing the frequent occurence

of earthquakes in the country

Exercise 4 (a ) The relative densities of the Earth and Moon are consistent with their core sizes because size also determines volume . The relatively small core sizes of the Earth and Moon causes smaller measurement in volume per area relevant to density (b ) Mountains form on Earth by means of forces within it such as volcanic activity , erosion , changing patterns in the earth 's crust , etc On the other hand , mountains formed on the moon are caused by molten rock formations and impact of foreign objects that collide or clash with the moon (c ) Mountain formations on Earth are caused by collision of plates that push the core of the earth upwards to form mountains . Other causes for mountain formation on Earth include volcanic activity , erosion . etc Mountains on Mars are said to be products by volcanic activity , however it only occurred on a small region of the planet . Formation of mountains due to plate movements is not possible due to the absence of plate tectonics in Mars

Chapter 11

Exercise 1 (a ) Archernar , Algol , Sirius , Sun (b ) Sun , Sirius , Archernar , Algol

Exercise 2 (a ) 7 (b ) 4 (c ) 3 (d ) 39 .8

Exercise 3 (a ) 14 (b ) 9 (c ) 5 (d ) 100

Exercise 4 (a ) 13 (b ) 7 (c ) 6 (d ) 158 .5

Exercise 5 (a ) The higher the mass of a star , the longer its duration of evolution on the main sequence (b ) Evolution of stars with less than 3 solar units of mass

Exercise 6 (a ) NGC2362 (b ) h x Persei

Exercise 7 (a ) 0 .9 (b ) 15000...