Where does the water on the road go after a rain day? And taking care of them can be very important! Second Grade Next Generation Science Standards Disciplinary Core Idea: ESS2.C: The Roles of Water in Earth’s Surface Processes - Water is found in the ocean, rivers, lakes, and ponds. Water exists as solid ice and in liquid form (2-ESS2-3). Performance Expectation: 2-ESS2-3 Obtain information to identify where water is found on Earth and that it can be solid or liquid.