Exploring Elevation and Temperature in NY and CA Activity 1 Name: ___________________ Period: __________________ Date: ____________________ Driving Question: How does temperature vary with elevation? Introduction Everyday we think about what the temperature and precipitation (rain or snow) are like outside. We probably even have some idea about what it is like in other places in general too. When trying to understand HOW Earth’s systems interact, temperature and precipitation are two important variables to look at along with elevation (how high the Earth’s surface is). In this lesson you will look closely at how temperature changes as elevation changes to see if there is a relationship between the two. Google Earth will let you look at New York State’s average temperatures across the state and help you see how the elevation of the land changes too. Then you will look at California and investigate how temperature varies with elevation. In California you will see much larger changes in elevation as compared to New York. While you explore in Google Earth, keep thinking about how the temperature and elevation are related. Pre Lab Question #1 What do YOU think is the relationship between the elevation of a location and its average temperature? Instructions Follow your teacher’s directions on how to open the Google Earth activity files on your own computer. The files contain important information related New York's and California’s climates (monthly temperatures and precipitation) and each state’s terrain (the shape of the land and elevation data). Part A: New York 1) Find the Western New York Study Area file in the file list shown in Google Earth on the left of the map. 2) Click the check box to turn on the NYS 250m Hillshade model so the hills and mountains across the state can be seen easily. OBSERVE the shape of the land across New York State and how it varies. Look for mountains, flat, valleys, and other features. Page 1 Google Earth File List 3) Turn OFF the NYS 250m Hillshade layer and turn ON the Western NY Weather Stations, Study Area Boundary, and Terrain Path though the Weather Stations layers by clicking their boxes on. This will show the weather stations we are using that have been recording long term temperature data. 4) Turn ON the January Average Temperature layer. A new very light orange and yellow layer should appear across the study area. CLICK the + symbol to expand the list of layers. Click on and off the two temperature range sub folders to find out which color goes with the temperature ranges. Fill in the legend info below: Light Orange = _____________F Yellow = _____________F 5) Turn ON the July Average Temperature layer. A new orange and red layer should appear across the study area. CLICK the + symbol to expand the list of layers. A color code LEGEND will now be shown. Fill in the legend info below: Orange = _____________F Red = _____________F 6) Right Click on the Terrain Path though the Weather Stations layer in the table of contents. A new menu will open. Choose the Show Elevation Profile feature (near the bottom of the menu). We will now to look closely at the relationship between elevation across and average temperature. OBSERVE the changes in elevation along the path shown in the window at the bottom of the map. Move your arrow (cursor) along the elevation profile window and see the large arrow showing the exact location on the path in the upper portion of the map. 7) Move your cursor to the lowest elevation along the path. CLICK in the upper part of the map close to the lowest elevation location and near one of the weather stations. A pop-up window will appear that contains elevation and temperature data. Record data below for three locations along the path. REPEAT for middle and highest elevation areas along the terrain path near weather stations. NY Terrain Path Data Lowest elevation on your transect line Middle elevation on your transect line Highest elevation on your transect line Weather Station Name Elevation value (feet) JANUARY Avg Temperature (F) JULY Avg Temperature (F) NEW YORK Results: (Write at least two sentences that tell about the relationship you see between temperature and elevation in New York State) Close the Elevation Profile window now Page 2 Part B: California 8) Find the California Study Area Data file in the file list shown in Google Earth on the left of the map and expand to show all of its sub folders. DOUBLE CLICK on the laye’s title to “Fly” to California. 9) Turn ON the CA Weather Stations, Study Area Boundary, and Terrain Path though the Weather Stations layers by clicking their boxes on. This will show the weather stations we are using that have been recording long term temperature data. 10) Turn ON the January Average Temperature layer and expand it to show its sub layers. A light orange to darker orange layer should appear across the study area. Turn on the Legend to show the temperature ranges of this layer. 11) Turn ON the July Average Temperature layer. A new darker orange to red layer should appear across the study area. CLICK the + symbol to expand the list of layers and check the color code LEGEND. 12) Turn OFF the temperature LEGENDS in January and July to remove them from the map area. 13) Right Click on the Terrain Path though the Weather Stations layer in the table of contents. A new menu will open. Choose the Show Elevation Profile feature (near the bottom of the menu). We will now to look closely at the relationship between elevation across and average temperature. 14) Move your cursor to the lowest elevation along the path. CLICK in the upper part of the map close to the lowest elevation location and near one of the weather stations. A pop-up window will appear that contains elevation and temperature data. Record data below for three locations along the path. REPEAT for middle and highest elevation areas along the terrain path near weather stations. CA Terrain Path Data Lowest elevation on your transect line Middle elevation on your transect line Highest elevation on your transect line Weather Station Name Elevation value (feet) JANUARY Avg Temperature (F) JULY Avg Temperature (F) CALIFORNIA Results: (Write at least two sentences that tell about the relationship you see between temperature and elevation in California) Page 3 Questions: 1. a) What DATA did you work with? b) What did the data look like? DESCRIBE! c) Which data were most helpful to you in thinking about how temperatures are related to elevation? Why? 2. Looking at your Part A data table, describe the relationship you found between elevation and temperature in New York State. 3. Did your Part B data table for California give the same results as New York? Explain how it is similar and how it is different. 4. The relationship between temperature and elevation is hardly ever perfect across all areas you might choose to look at. What other variables (factors) might have an affect on the temperature and elevation relationships that you observed. Page 4