A polar ice cap is that region at either poles of a planet or natural satellite that is permanently covered in ice. It is different from an ice cap in that there are no specifications on the size or composition of a body of ice for it to be considered a polar ice cap. Whereas […]
In studying a heavenly body, knowing the composition of the crust is not enough. Beneath the crust there lies the mantle, which is the intermediate zone of a planet located between the crust and the core. For example, the earth’s mantle is within 32 km to 2,900 km from its crust. The mantle makes up […]
Determining precise positions on Earth requires the use of three basic geographic parameters: latitude, longitude and elevation. These parameters are not very easy to determine and require accurate measurement procedures and state-of-the-art equipments.
Igneous, from the root word ignite which means to catch fire! Did you know how an igneous rock is formed? Extremely hot molten rock from the deep recesses of the earth makes its way out and literally ignites everything it comes in contact with, once the liquid cools down, an igneous rock is formed.