Chapter 3, Section 3 Standards IE 1h. Read and Interpret topographic and geologic maps. Objective 1 Explain how elevation and topography are shown on a map. Objective 2 Describe three types of information shown in geologic maps. Assessment Mapping Practice Sheet, Chapter Test Review Daily Bellwork, Science Starters,

Key Terms Create a flash card for the following key terms (p. 63 in textbook): Topography Elevation Contour line Relief If you finish early, study your flash cards!

Topographic Maps Topographic maps show the surface features of a location. They include rivers, hills, roads, and more. A topographic map also shows elevation = height above sea level.

Animated Topographic Maps Access html on PPT Resource disk ch.3 8023

Topographic Maps The lines show the contours and elevation of the island.

Advantages of Topographic Maps Detailed info about surface features Show’s size and shape Show’s elevation

Elevation on Topographic Maps Contour Lines are used to show elevation. Contour Lines are the wavy lines and each line represents a new elevation (height from sea level). The difference in elevation between one contour line and the next is called the contour interval. Relief is the difference in elevation between the highest and lowest points of the area being mapped.

Quick Check! The wavy lines on a topo map are called __________. Contour lines show __________. What is elevation? Relief is the difference between :________.

Contour Lines

INTERACTIVE! Quickwrite: 2min…tell me all about TOPOGRAPHIC MAPS

About how high in elevation is this island?

What is the contour interval on this map?

Quick Check!! A __________ _________ is the difference in elevation between one contour line and the next. Name an advantage of a topographic map. _______________________________________________________________________________________________________________

Landforms on Topographic Maps Contour lines spaced widely apart indicate a gradual change in elevation, whereas lines close together indicate and rapid change in elevation or a steep slope. A ‘V’ shape indicates a valley, the point is the highest end.

a Practice What kind of landform is represented by this contour map: Lake Canyon Hill Valley What is the lowest elevation on the map? ________ What is the elevation of point A?_________ a

a Practice What kind of landform is represented by this contour map: Lake Canyon Hill Valley What is the lowest elevation on the map? ________ What is the elevation of point A?_________ a

Practice Match the topo map to the profile view of the landform. a

Topographic Map Symbols Buildings, boundaries, roads = black. Major highways = red. Water = blue. Forests = green

INTERACTIVE! Frayer Diagram: TOPOGRAPHIC MAPS Complete and then tape/glue onto interactive side of your notebook. Definition Illustration Topographic Maps Advantages Contour Lines

Geologic Maps Geologic maps show types of rocks and the locations of faults, folds, and other structures. Geologic Units are a volume (section) of rock from the same age range and rock type and are shown in the same color. Letters are also used to label the types and ages of the rock on the map. Used by engineers, geologists, developers

Geologic Maps Contact Lines—places at which 2 geologic units meet. The place at which 2 geological units meet is called a “Contact”. 2 main types of Contacts are: faults and depositional contacts (one layer of rock formed on top of another)

Quick Check! What does a geologic map show? The place where 2 types of rock meet is called a __________.

Soil Maps Classify, map, and describe soils Used by famers, agricultural engineers, conservationists They show, type of soil, depth, how easily it erodes, holds water, what plants are best

Assessment Topographic Map Reading Worksheet Playdoh Mountains Model project? Use clay or foam?