Knowledge Exploration Study of Muhammadiyah School Students about Urban Heat Island Threats in Surakarta City

- This study aims to determine the knowledge of school students on the threat of Urban Heat Island (UHI) in Surakarta City. This study uses a quantitative descriptive approach with survey methods and image interpretation. This study aims to determine the threat of UHI in Surakarta through image interpretation and to find out the knowledge about UHI, the causes of UHI, and the impact of UHI in daily life by students in schools. The study sample were SeventhGrade students of Surakarta Muhammadiyah 1 Junior High School located in the center of Surakarta City and Seventh Grade students of Surakarta 10 Muhammadiyah Junior High School located on the outskirts of Surakarta. The results showed that Surakarta City was identified to be threatened by UHI phenomena from the interpretation of Landsat 7 ETM + images where the NDVI (Normalize Difference Vegetation Index) from 2003 to 2015 accounted to -0.4491 and the LST (Land Surface Temperature) index showed an increase in high temperature of 34-35 ° C in Surakarta City in 2015. Validation test on instruments shows the value of r count >0.444, meanwhile the Cronbach’s Alpha value is 0.635 > 0.444. Finally, the questionnaire can be declared to be reliable to use. Based on interviews with students thruvalidated instruments, it can be concluded as follow: 81.5% of students did not know that UHI was threatened the city, 59% of students felt that there was an increase in heat in the Surakarta city area at the time at night lately, 53% of students know that the temperature of Surakarta City is currently hotter than the districts around the City, 57.4% of students know the causes of urban temperature changes lately, 30.6% of students know the impact caused by the UHI phenomenon.