This is a cone-shaped mountain formed by lava that has erupted from a crater.
What is a volcano?
100
This is a stream of water dropping over a dam or precipice.
What is a waterfall?
100
This is the highest point of a hill or mountain.
What is the summit?
100
This is low, spongy land too wet to farm but with an abundance of grasses, trees, or other vegetation. You might find alligators living there.
What is a swamp?
100
This is the name for a group of islands.
What is an archipelago?
200
This is a large sheet of ice formed in an area where the temperature usually remains below or near freezing.
What is a glacier?
200
This is an inland body of water, usually of considerable size. Two examples are Sebago and Superior.
What is a lake?
200
This is a series of rocks or coral in a body of water, the tops of which are at or just slightly below the surface of the water.
What is a reef?
200
This is an area of low, wet, poorly drained land. You could find one in Scarborough.
What is a marsh?
200
This is a small coral island the shape of a ring or horseshoe.
What is an atoll?
300
This is a flat-topped, rocky hill with steep sides, or the Spanish word for table.
What is a mesa?
300
This is like a bay, but usually larger. There is a large one bordering Texas, Louisiana, Mississippi, Alabama, and Florida.
What is a gulf?
300
This is a fertile spot within a desert watered by underground springs or by irrigation.
What is an oasis?
300
This is a pool of shallow water connected to the sea by an inlet, or the pool of water in an atoll.
What is a lagoon?
300
This is a narrow piece of land that connects two larger pieces of land.
What is an isthmus?
400
This is a piece of land almost surrounded by water. It literally means "almost an island".
What is a peninsula?
400
This is an inlet of the ocean bordering on land or partially surrounded by land.
What is a bay?
400
This is the line on a mountain above which trees do not grow.
What is the timberline?
400
Any of the three words that describe a narrow strip of water that is usually a good passage for ships.
What is a strait, a sound, or a channel?
400
This is a pass between two mountain peaks.
What is a col?
500
This is a vast treeless plain in the arctic regions where the subsoil is permanently frozen.
What is tundra?
500
This is a stream that flows into another stream.
What is a tributary?
500
This is the land between hills or mountains.
What is a valley?
500
This is where the river meets the ocean and is a mix of salt water and fresh water.
What is an estuary?
500
This is a slow, sluggish stream, usually used to describe inlets from the Gulf of Mexico or from the Mississippi River. You heard a song about being born on one.