1) Where on Earth is the Sun directly overhead at noon? 2) Which region has 24 hours of daylight? 3) Which region has 24 hours of darkness? 4) Note the direction at which the light strikes Earth’s surface in both the northern and southern hemispheres. Which hemisphere of the globe is having summer? 5) Why is December 21 called the Winter Solstice? 6) If the Earth’s axis were not inclined, what would happen to our seasons? 7) If the Earth’s axis were more inclined, what would happen to our seasons?

Which of the following does not determine the type of magma to erupt from a volcano? a. temperature b. gas content c. viscosity d. silica content what kind of volcano forms from basaltic magma with low-viscosity and low-gas content? a. shield volcano b. stratovolcano c. composite-cone volcano d. cinder-cone volcano what is viscosity? a. a rising mass of mantle abnormally hot and / or wet b. a pool of magma beneath the overlying crust c. what causes a bend to occur in the rock layer d. a measure of a fluid's resistance to flow