| A | B |
|---|
| landform | the shape of the land, such as mountain, plain, plateau or desert |
| magma | molten (melted) rock deep within the earth |
| volcano | a mountain formed by haardened lava with an opening through which lava, ashes, rocks and other materials may come out |
| dormant | "sleeping" or inactiv |
| earthquake | shaking of the ground caused by rock movement along a fault |
| fault | a crack in the earth's crust along which rocks move |
| weathering | the breaking and changing of rocks |
| erosion | the moving of weathered rocks and soil by wind, water or ice |
| dune | a pile of sand formed by wind |
| mineral | nonliving, solid matter in the earth |
| igneous rock | formed from magma that cools below the earth's surface |
| sedimentary rock | rocks formed from tiny pieces of other rocks, shells, sand and other materials that are carried into lakes and oceans by streams and rivers the settle and harden in layers |
| metamorphic rock | rocks deep inside the earth that change into different kinds of rocks because of the heat and pressure |
