Jamie placed 1 cup of sand (S), potting soil (P), and a mixture of sand and soil (M) into separate containers. In each of the containers he placed a thermometer so that the bulb was 2.5 cm below the surface. He placed the 3 containers under identical heat lamps for an hour. The original temperatures of each container was 15° C. After heating the jars in three separate trials, the temperatures of the containers were as follows: Sand (S) #1 Sand (S) #2 Sand (S) #3 Original Temperature 15 ° C 15 ° C 15 ° C Final Temperature 28 ° C 27 ° C 26 ° C Potting Soil (P) #1 Potting Soil (P) #2 Potting Soil (P) #3 Original Temperature 15 ° C 15 ° C 15 ° C Final Temperature 33 ° C 29 ° C 31 ° C Mixture (M) #1 Mixture (M) #2 Mixture (M) #3 Original Temperature 15 ° C 15 ° C 15 ° C Final Temperature 29 ° C 29 ° C 22.5