| A | B |
|---|
 | crust - just below earth's surface |
 | glacier - large mass of ice moving slowly down a mountain or valley |
 | The gulf is a large part of the ocean that extends into the land. |
 | inner core |
 | An island is totally surrounded by water |
 | An isthmus connects two larger bodies of water. |
 | Lava is melted rock that flows from the volcano |
 | Layers of the earth |
 | The mantle is the layer just under the crust. |
 | A mountain is a very high hill. |
 | Oceans are the largest bodies of water |
 | The outer core is between the mantle and the inner core. |
 | A peninsula is land with 3 sides surrounded by water |
 | A plateau is high flat land. |
 | A river flows into a lake or ocean. |
 | A valley is low land between hills or mountains. |
 | A volcano is a mountain with an opening (spits ash, lava or steam) |
 | A wetland is a type of ecosystem. |
