Currents at the surface of the ocean are driven by:

gravity

tectonic plates

salinity

wind

Briefly describe the relationship between the FDA and the USDA.

Light-colored rocks with low densities form basaltic magma. True or false

Which factor has the greatest affect in a seasons climate

Seafloor spreading and continental drift are believed to be caused by

A weather station is located 500 kilometers directly east of a second station. winds at the eastern station are blowing from the south. winds at the western station are blowing from the north.

1. Describe the most important diagnostic properties in igneous rocks. 2. What minerals would you expect to form in basalt? (Hint: Consider composition and Bowen's reaction series). Explain your answer.

What is the most important role of the ecosystems of the Andes? A. Keep the environment stable and reduces air pollution B. Reduce the chance of floods, desertification, and landslides C. Regulate the availability of freshwater D. All of the above

All of the following are examples of thematic maps except:

Which is used by scientists as evidence that Earth's inner core is solid? O A. S waves cannot travel through the inner core, creating a shadow zone. O B. Seismic waves change speed when they go from the inner core to the outer core. O C.

What role did geography play in the early African kingdoms? Volcanic eruptions scared away attackers. Mineral deposits brought wealth and power. The Great Rift separated them from the continent. Tropical storms extended the growing season.