em test

What are the 4 main layers of the Earth?

Crust, mantle, outer core, and inner core.

What are the three types of rocks and how are they formed?

Igneous rocks: Formed from cooled magma (e.g., basalt, granite). Sedimentary rocks: Made from particles of other rocks (e.g., limestone, sandstone). Metamorphic rocks: Formed under pressure and heat from other rock types (e.g., marble, slate).

Describe the rock cycle.

Continuous process where rocks are formed, broken down, and reformed. Includes weathering, erosion, compaction, melting, and cooling.

List the environmental impacts of mining.

Habitat destruction, soil erosion, water pollution from chemicals like cyanide/mercury, air pollution from dust, and noise pollution from heavy machinery.