Table of Contents

## What 2 names are given for the lines that run around the Earth in an east-west direction?

The imaginary lines circling the globe in an east-west direction are called the lines of latitude (or parallels, as they are parallel to the equator). They are used to measure distances north and south of the equator. The lines circling the globe in a north-south direction are called lines of longitude (or meridians).

## What two coordinates are needed to find a location?

On Earth we specify one’s position using two coordinates: latitude and longitude. We think of them as a grid made of latitude and longitude lines. Latitude lines, or parallels, run horizontally and parallel to the equator.

## How do I find out my coordinates?

Get the coordinates of a place

- On your Android phone or tablet, open the Google Maps app .
- Touch and hold an area of the map that isn’t labeled. You’ll see a red pin appear.
- You’ll see the coordinates in the search box at the top.

## How do you convert coordinates?

Community Mapping Experiment: How to Convert Latitude and Longitude to Map Coordinates

- Step 1: Multiply (×) the “degrees” by 60.
- Step 2: Add (+) the “minutes”
- Step 3: If the Latitude (Longitude) degrees are S (W) use a minus sign (“-“) in front.
- Step 4: Subtract Reference Location converted to Minutes.

## What are DD coordinates?

Decimal degrees (DD) express latitude and longitude geographic coordinates as decimal fractions of a degree. DD are used in many geographic information systems (GIS), web mapping applications such as OpenStreetMap, and GPS devices.

## Is north latitude or longitude?

Lines of latitude measure north-south position between the poles. The equator is defined as 0 degrees, the North Pole is 90 degrees north, and the South Pole is 90 degrees south. Lines of latitude are all parallel to each other, thus they are often referred to as parallels.

## How do you convert XY coordinates to latitude and longitude?

Assign the values of the coordinates to x, y and z. Assume the value 6371 km to the variable R, which is the approximate radius of earth. This value is the scientifically derived value for radius of the earth. Calculate latitude and longitude using the formula: latitude = asin (z/R) and longitude = atan2 (y,x).

## What are my Eastings and Northings?

Easting is the eastward-measured distance (or the x-coordinate) and northing is the northward-measured distance (or the y-coordinate). Easting and northing coordinates are commonly measured in metres from the axes of some horizontal datum. However, other units (e.g., survey feet) are also used.

## How do you calculate UTM coordinates?

To make UTM measurements, subdivide the 1,000-meter grid squares into tenths or hundredths. This narrows down the coordinate to a 100 meter or 10 meter square. Measurements can be made using a gridded mylar overlay, a paper scale, or a coordinate reader.

## How do I put XY coordinates in Google Earth?

- Open Google Earth.
- At the top, click Google Earth. Preferences.
- Click 3D View. Then, under “Show Lat/Long,” choose a display format.
- Click OK. Coordinates will be displayed in the lower right corner.

## How do you put a degree symbol in Google Maps?

How to Type the °

- First hit the “123” button to see the numerical keypad.
- Now you can access the degree sign by tapping and holding the 0 (zero) key.
- This will reveal the degree symbol, and this can be selected through a pop-up menu that appears over the key.

## How do I put coordinates on a line in Google Earth?

Draw a path or polygon

- Open Google Earth.
- Go to a place on the map.
- Above the map, click Add Path . To add a shape, click Add Polygon.
- A “New Path” or “New Polygon” dialog will pop up.
- To draw the line or shape you want, click a start point on the map and drag.
- Click an endpoint.
- Click OK.

## How do you write longitude and latitude?

Write the latitude and longitude coordinates. When writing latitude and longitude, write latitude first, followed by a comma, and then longitude. For example, the above lines of latitude and longitude would be written as “15°N, 30°E.”

## What is the difference between GPS coordinates and latitude and longitude?

Coordinates, in this context, are points of intersection in a grid system. GPS (global positioning system) coordinates are usually expressed as the combination of latitude and longitude. The prime meridian is 0 degrees longitude and the locations are measured according to 90 degrees east or west from that point.

## Is latitude north or east?

Latitude measures the number of degrees north or south of the equator which has a latitude of 0 . Lines of latitude (parallels) run east-west around the globe and are used to measure distances NORTH and SOUTH of the equator.

## How do you know if Latitude is north or south?

Lines of latitude run horizontally around the Earth and tell you how far north or south you are from the Equator. A latitude reading will tell you how far north or south a location is. The North Pole is at 90 degrees latitude (or 90.0° N) and the south poles is at -90 degrees latitude (or 90.0° S).

## Why are latitudes and longitudes expressed in angles?

Latitudes and longitudes like angles are expressed in terms of degrees. It is because the earth is a sphere. Any line drawn around the earth is a circle, The latitude and the longitude tell us about the angle between the center of the earth and a given location of a place on the globe.

## Why are distance from reference lines measured in angles?

Since the latitudes and the longitudes are actually points of intersection with the Earth’s surface from the center of the Earth, the distances from reference lines are measured in angles. This gives us more accuracy in measuring the distance.

## Why is the international date line not a straight line?

The dateline runs from the North Pole to the South Pole and marks the divide between the Western and Eastern Hemisphere. It is not straight but zigzags to avoid political and country borders and to not cut some countries in half.

## How are the latitudes expressed?

Latitude is measured as the angle from the equator, to the Earth’s center, to your position on the Earth’s surface (Figure2. 1.1). It is expressed as degrees north or south of the equator (0o), with the poles at a latitude of 90o.