Explain the reason for the seasons, and know the definitions of winter and summer solstice, and fall and spring equinox. What is the axial tilt of the earth?
What are the metric units for energy and power? What is the difference between energy and power? What are radiant, kinetic, and thermal energy?
What direction does the sunrise and set in Tempe inpic the summer, winter, and the equinoxes? solar wind?