Vocabulary to Master
1. Aquifer – A layer of water-bearing rock through which groundwater moves.
2. Archipelago – A group of islands
3. Atoll – A coral reef in the open ocean that appears as a low, ring-shaped island, or ring of islets.
4. Bay – Part of a lake or sea that is partly surrounded by the shore land.
5. Butte – Tall, steep-sided towers of rock. Smaller than a mesa.
6. Canyon – A deep, narrow valley having high, steep sides or cliffs.
7. Cape – A narrow part of land along a shore that sticks out into the water.
8. Census – A count of the population of a country, usually conducted by the government. It records the number of people and data such as age, gender, and occupation. A census can also be taken of plant or animal life.
9. Channel – A wide strait or waterway between two land masses that lie close to each other.
10. Coast – Land along the sea.
11. Core – One of three main layers of the earth. The middle layer of hot rock, the matle, is sandwiched between the inner layer, called the core, and the outer layer, called the crust.
12. Crust – One of three main layers of the earth. The middle layer of hot rock, the mantle, is sandwiched between the inner layer, called the core, and the outer layer, called the crust.
13. Delta – Land made by soil that drops from a river at its mouth, the place where it meets the sea.
14. Desert – Very dry area of land that receives ten inches or less of precipitation a year. Deserts are found on every continent and cover about one-third of the earth’s land area.
15. Divide – The high land that separates two river basins. A river drains the water from the land, and that land is its basin.
16. Ecosystem – Contraction of ‘ecological system’, a term used in classifying the earth’s natural communities according to how living and non-living things and their environment function as a unit.
17. Elevation – The distance above sea level.
18. Equator – An imaginary line around the middle of the earth. Halfway between the North and South Poles, it divides the earth into Northern and Southern Hemispheres. It is the O degree line of latitude.
19. Equinox – Occurs twice a year when the sun appears directly overhead to observers at the equator. The periods of sunlight and darkness are nearly equal.
20. Escarpment – A steep slope or cliff.