Just push the flag to start the project.
Here are our cradits: https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&cad=rja&uact=8&ved=0CDAQFjACahUKEwjcrb_U84_IAhVGjw0KHQ6lDd8&url=http%3A%2F%2Fwww.kidsgeo.com%2Fgeography-for-kids%2F0127-warm-fronts.php&usg=AFQjCNFRutZQD1yhNnex9kJeB8RAcgiU3A http://www.ducksters.com/science/weather.php http://www.weatherwizkids.com/weather-forecasting.htm http://www.livescience.com/39004-weather-fronts-definition-facts.html www.freesound.org