| NY Standard 4 Core Concepts |
| 1.1i. Approximately 70% of Earth’s surface is covered by a relatively thin layer of water. |
| 1.1c. Earth’s coordinate system of latitude and longitude, with the equator and prime meridian are reference lines, is based upon Earth’s rotation and our observation of the Sun and stars. |
| 1.1d. Earth rotates on an imaginary axis at a rate of 15 degrees per hour. To people on Earth, this turn of the planet makes it seem as though the Sun, Moon, and stars are moving around Earth once a day. Rotation provides a basis for our system of local time; meridians of longitude are the basis for time zones. |
| 2.1q. Topographic maps represent landforms through use of contour lines (isolines connecting points of equal elevation.) Gradients and profiles can be determined from changes in elevation over a given distance. |
| NY Standard 6 Key Ideas |
| 2. Models are simplified representations of objects, structures, or systems used in analysis, explanation, interpretation, or design. |
| 2. Grouping of magnitudes of size or other units of measurement into a series of relative order provides a useful way to deal with the immense range and changes in scale that affect the behavior and design of systems. |
