Synoptic Charts, Topographic Maps and Water Flashcards
What is a High Pressure System?
A feature on a synoptic chart where isobar values get higher in hPa, the wind goes anticlockwise and the air sinks. This is in the Southern Hemisphere and is the opposite in the Northern hemisphere.
What is a Low Pressure System?
A feature on a synoptic chart where isobar values get lower in hPa, the wind goes clockwise, and air rises. This is in the Southern Hemisphere and is the opposite in the Northern hemisphere.
What is a synoptic chart?
A weather map.
What is the unit of measurement of air pressure?
Hectopascals.
What instrument is used to measure the value of isobars?
Barometer.
What weather does a high pressure system bring?
Fair weather.
What weather does a low pressure system bring?
Windy, cloudy, rain and possible storms.
What is a contour line?
A contour line defines the elevation of a place on a topographic map.
What are the 4 quadrants?
North-East, South-East, South-West, North-West
What device is used to measure the bearing of one place to another?
Protractor.
How many numbers does an area reference (AR) have?
4 numbers (eastings then northings)
What are the two sets of lines that cross over each other on a synoptic chart called?
Eastings and Northings.
Do eastings or Northings come first when writing the AR or GR?
Eastings first then Northings.
How many numbers does a grid reference (GR) have?
6 numbers.
What is a choropleth map?
A choropleth map is used to represent statistical data using colour mapping.
What is a precis map?
A precis map highlights the main features in an area, and is not very precise.
What is a political map?
A political map shows the states and country borders in an area that are defined by the politicians in that area.
What is a cadastral map?
A cadastral map shows the outlines of different properties that people rightfully own.
What is a cartogram map?
A cartogram map is where the size of an area changes on a ratio-level variable, like population or travel time.
What is longitude?
Vertical lines that connect at the poles. The middle prime meridian is longitude 0° and is related to time zones.
What is latitude?
It goes directly across the earth and the middle of it is the equator.
What are the three types of scales on a topographic map?
A ratio scale, linear scale, or a sentence scale.
What is run off?
Runoff is precipitation that does not soak into the soil but instead moves on the Earth’s surface toward streams
What is precipitation?
Is water going back down to the ground in the form of rain, hail, snow, sleet etc.
