2.1 Understand energy forms, sources and characteristics
| | | 2.1.1 | | identify forms of energy (e.g., heat, light, electricity, sound) | | 2.1.2 | | identify objects, such as the sun, that emit heat and light | | 2.1.3 | | recognize that heat can be provided in a variety of ways (e.g., chemical reactions, electrical machines, friction) | | 2.1.4 | | recognize that when a warmer object comes in contact with a cooler one, the warm object loses heat and the cool one gains it until they are both at the same temperature | | 2.1.5 | | use tools to measure the gain or loss of energy (e.g., thermometer, balance) |
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