| A | B |
|---|
| Density | amount of mass, or substance, in a material |
| Geospere | solid part of earth, including the soil and earth's rocky center |
| Gravity | force of attraction between every object and every other object that exists because of mass |
| Sphere | a shape like a ball |
| athenosphere | plastic, flowing layer within the mantle |
| core | earth's dense, metallic center |
| crust | rocky, outermost layer of earth |
| lithosphere | rigid layer that includes the crust and uppermost mantle |
| magnetosphere | outer part of earth's magnetic field |
| mantle | thick middle layer in the solid part of earth |
| landform | feature on earth's surface formed by natural processes |
| mountain | tall, steep landform with high relief and elevation |
| plain | low, flat landform with low relief and elevation |
| plateau | high, flat landform with low relief and high elevation |
