Geo 1.1

Mapping and Map Tools

​Maps and Globes

​The disadvantage of a map is that distortion occurs when a three-dimensional image is converted to two dimensions. A cartographer, or mapmaker, solves this problem by using different types of map projections. A map projection is a way of drawing the earth’s surface that reduces distortion.

Multiple Choice

Why do cartographers need to use projections when drawing maps?

• Cartographers need to use projections to correct for the distortion that occurs as the earth’s flat surface is flattened to make a map

• Cartographers need to use projections to correct for the distortion that occurs as the earth’s curved surface is flattened to make a map

• Baseball players need to use projections to correct for the distortion that occurs as the earth’s curved surface is flattened to make a map

Multiple Choice

Which of the following would you not expect to see on a physical map?

• rivers

• mountains

• country borders

• elevation

Multiple Choice

True or False: Longitude measures distance from East or West of Prime Meridian?

• True

• False

Poll

What is absolute location?

• exact location based on coordinates (lat and long)

• location you start your day at

• where one place is in relation to another

Open Ended

What is a feature you'd find on a physical map?

Open Ended

How many states are there in the United States?

Poll

Were there more or less states on the Historical map of the United States than there are today?

• more

• less

Multiple Choice

What are thematic maps used for?

• Thematic maps focus on specific kinds of information.

• Thematic maps focus on globes.

• Navigational maps focus on roads.

• Thematic maps do notfocus on specific kinds of information.

Multiple Choice

Based on the Population Density Map, which part of the United States has more people?

• East

• West

Poll

Based on the Resource Map, what resource does Texas have the most of?

• oil

• crops

• fish

​GIS/GPS

​A familiar tool of geographers is the Geographic Information System (GIS). This system uses digital map information to produce a specialized map. GIS provides specialized information to solve problems. For example, it may help builders find a suitable site to build an airport.

​GIS/GPS

​Another tool of geographers is the Global Positioning System (GPS). The system uses a series of 24 satellites called Navstars. They send the exact latitude, longitude, altitude, and time to a handheld receiver

Multiple Choice

What would you use a GPS for?

• to find a precise location on the earth

• to find a precise location on the moon

Open Ended

What is one thing that you learned about maps today?