Chapter 2 Rocks and Landforms in Your Region Flashcards
What two things do geologic maps tell us?
Geologic maps tell us 1) What type of rocks are found in an area, and 2) How old those rocks are.
What do contour lines connect?
Contour lines connect land at the same elevation above sea level.
How can you tell whether a slope is steep or gentle?
If the lines are close together the slope is steep and if the lines are far apart the slope is gentle.
What do the colors on the topography map represent?
Blue represents water, black represents man-made objects (transportation, buildings, etc.), and green represents vegetation.
How can you determine the real-life distance between two locations on a map?
You determine the real-life distance between two locations on a map by using the scale as it provides real-life distances.
What do the title coordinates on the map indicate?
The title coordinates on the map indicate the map’s location.
What does topography show? (2 things)
Topography shows 1) the SHAPE of the land, and 2) Landforms in an area (such as plateaus, valleys, hills, volcanoes, cliffs, craters, mountains, and canyons).
Contour lines are always what?
Contour lines are always smooth, never touch, and are always closed.
The closer the contour lines are the what?
The closer the contour lines are the steeper the slope is.
What do contour lines provide?
Contour lines provide the change in height between 2 contour lines.
Contour lines show and do what when they cross rivers?
Contour lines bend as they cross rivers and the “v” points upstream.
Hatch marks on a contour line indicate what?
Hatch marks on a contour line indicate a depression.
Who uses topography maps?
1) Landscaper, 2) geologist, 3) contractor, 4) engineer, 5) hikers and scouts.
How do you find the location on a topography map?
Look at the 1) Title, and 2) Coordinates.
Topography is the shape of what?
Topography is the shape of the physical features of the land surface.
The curves on a topographic map represent what?
The curves on a topographic map represent 1) land at the same elevation, (The rest don’t matter too much) and 2) the height above sea level.
What rock types are common in your area (NJ)?
Sedimentary rocks.
Why are maps and data tables considered scientific tools?
Maps and data tables considered scientific tools because geologists can use them to study rocks or they can find different landforms/types.
What is a geologist?
A geologist is a person who is trained in and works in any of the geological sciences.
Define topography.
Topography is the configuration of a land surface, including its relief and the position of its natural and human-made features.
What does landform mean?
A landform is a part or area of the Earth’s surface that has a distinctive shape or topography. Examples are major features like plains, plateaus, and mountain ranges, and also smaller features like hills, valleys, slopes, canyons, flatlands, wetlands, deltas, shorelines, and so on.
Define contour line.
A contour line is a line (actually, a curve) on a topographic map that connects the positions of all points at the same elevation.
What is elevation?
Elevation is the vertical distance (height) from mean sea level to a point on the Earth’s surface.
What is a geologic map?
A geologic map is a map that shows the distribution, nature, and age relationships of rock units and structural features in the rocks.
What does sediment mean?
Sediment is particles of solid material that have been moved from their place of origin by wind, running water, or glacier ice and deposited on a surface.
Define contour interval.
A contour interval is the vertical distance between adjacent contour lines on a topographic map.
What is the geosphere?
The geosphere is the part of the Earth system that includes the crust, mantle, and inner and outer core.
What is latitude?
Latitude is the north-south position of a point on the Earth’s surface, relative to the Equator. The latitude is measured in degrees, from 0 degrees at the Equator to 90 degrees at the North Pole or South Pole.
Define longitude.
Longitude is the east-west position of a point on the Earth’s surface, relative to an arbitrary line on the Earth’s surface that stretches from the North Pole to the South Pole and passes through Greenwich, England. The longitude is measured in degrees (0 degrees to 180 degrees) east or west from the arbitrary line.
What is a mountain?
A mountain is any part of the Earth’s crust higher than a hill, elevated at least 300 meters (1,000 feet) above the surrounding land.
How high does a mountain have to be in order to be considered a mountain?
At least 300 meters (or 1,000 feet).
Do topographic maps only show natural features of an area.?
No, that is false because they show man-made objects too.
Extra Credit: True or False? Index contours are contour lines that are printed darker in order to make map reading easier.
True.
The distance between two contour lines on a map is called what?
The distance between two contour lines on a map is called the map scale.
What do the “v’s” indicate about soil on some maps?
The “v’s” indicate that the river has eroded some soil away.
Each topographic map shows latitude and longitude across where?
Each topographic map shows latitude and longitude across the region with marks along the edges.
The what on the map shows the map scale, meaning of the symbols, and the date the map was made?
The key/legend on the map shows the map scale, meaning of the symbols, and the date the map was made.
What do geologic maps show?
A geologic map shows the distribution, nature,and age relationship of rock units as well as features in the rocks.
What is shown is a map’s key/legend?
A map’s key/legend shows the map scale, meaning of symbols, the date the map was made, how old rocks are, etc.
What human features are shown on a topographic map?
1) Roads, 2) Buildings, 3) Transportation, etc.
