7th Grade Unit 8 Lessons 1-2

water that is above the Earth’s surface; streams, rivers, lakes

water found in spaces between rock particles below that Earth’s surface

upper boundary, or surface, of groundwater

path that a stream follows

smaller stream that feeds into a river and eventually a river system

area of land that is drained by a river system

ridge or area of higher ground that separates one watershed from another

measure of the change in elevation over a certain distance

materials carried by a stream

percentage of rock that is composed of open spaces (pores)