| geology |
the study of the physical structure of the earth and how it has changed over time. Geologists gain this knowledge by studying rocks. Some geologists study other planets. [2 definitions] |
| geothermal |
having to do with the heat produced inside the earth. |
| global |
having to do with the whole earth. [1/2 definitions] |
| globe |
the world; planet Earth. [2 definitions] |
| gnome1 |
a creature in fairy tales that lives inside the earth and guards precious treasure. Gnomes are often portrayed as little old men with beards. |
| gold mine |
a place where gold is removed from the earth. [1/2 definitions] |
| ground1 |
dirt; earth. [1/9 definitions] |
| heaven |
(usually plural) the sky, including the stars, sun, moon, and planets as seen from the earth. [1/4 definitions] |
| heavenly |
having to do with heaven as in religion or the space above the earth. [1/2 definitions] |
| hemisphere |
either of two halves of the earth. A hemisphere is formed by dividing the earth into the Northern and Southern Hemispheres at the equator, or into the Eastern and Western Hemispheres at a meridian. [1/2 definitions] |
| hogan |
a type of house built by the Navajo and other Native American people. A hogan is made of earth walls supported by logs. |
| horizon |
the line where the earth and the sky appear to meet. [1/2 definitions] |
| horizontal |
parallel to the surface of the earth or to the horizon. |
| ice age |
a long period of time when glaciers covered large parts of the earth. |
| Jupiter |
the largest planet in the solar system and fifth in distance from the sun. Jupiter has sixteen moons and is more than one thousand times larger than Earth. [1/2 definitions] |
| landform |
a natural part of the earth like a hill, mountain, canyon or island. A landform has been made by forces that are active inside the earth or around the earth. |
| landmass |
a very large area of land on the earth, such as a continent or a large part of a continent. |
| landslide |
the falling of earth down a steep slope. [1/2 definitions] |
| mantle |
the layer of the earth that lies between the crust and the core. The crust is the top layer of the earth--the layer we live on. The core is the center of our earth. The mantle is very thick and makes up most of the entire planet. [1/2 definitions] |
| map |
a picture of a particular area of the earth or sky drawn or printed to scale on a flat surface. [1/3 definitions] |
| meridian |
an imaginary circle around the earth that passes through the North and the South Pole, or either half of such a circle from one pole to the other. [1/2 definitions] |