Images of Earths Surface Essential Question: How do we view large areas of Earth’s surface? Objective: You will be able to analyze images of Earth’s surface to identify land features.

Artificial Satellites Human-built machines that orbit the Earth and perform a specific task by receiving and transmitting signals by electromagnetic waves.

Electromagnetic Waves

How High do Satellites Fly

Satellite Images Images of the Earth’s surface from space via satellites orbiting the Earth.

Types of Artificial Satellites Scientific Research – used to map sea surface temperatures Weather – provides ongoing weather data Communications – used to track the satellite systems Navigation – the global positioning system (GPS) Earth Observations – used to map surface features such as land use. Military – provides secure communications for the military

Remote Sensing Satellites use remote sensing instruments to collect data, which are transmitted from the satellite to the ground by electromagnetic waves.

Global Positioning System (GPS) – Network of satellites orbing Earth

Geographic Information System (GIS) – Program used to view and make images and maps.