Vocabulary Sheet #2

1. Steppe: plain with a lot of short grass
2. Oxbow Lake: crescent-shaped lake formed by a meander being bypassed
3. Aquaclude: underground rock layer that groundwater cannot pass through
4. Contrail: line of condensation in the sky that follows an airplane; made of water droplets and ice particles
   • AKA condensation trail
5. Soil: portion of Earth's surface that is occupied by roots and made of minerals, organisms, gas, humus, water, and rock
6. Humus: decomposed plant and animal material in the soil
7. Karst: landscape made of underground limestone caverns formed by groundwater
8. Tundra: cold region made of low-growing plants
9. Humidity: water vapor in the air
10. Canyon: deep valley with steep sides formed by a river