Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
14 Cards in this Set
- Front
- Back
Active mountain belts are most likely to be found _______
|
along the margins of continents
|
|
The annual per capita consumption of metallic and non-metallic mineral resources in the United States is nearly ____ tons.
|
11
|
|
Roughly what percentage of the earth's surface is covered by oceans?
|
71%
|
|
The earth is approximately ___ billion years old?
|
4.6
|
|
The world reached the population of 1 billion in the year ____
|
1800 A.D.
|
|
By the year 2008 the world population is expected to reach nearly
|
8 billion
|
|
Mechanisms that enhance or drive change are known as ____.
|
positive feedback mechanisms
|
|
the continental shelf is located _____
|
between the continental rise and the abyssal plains
|
|
the composition of the core of Earth is thought to be
|
solid iron-nickel alloy
|
|
Which branch of sccience is generally divided into two broad divisions, physical and hsitorical
|
geology
|
|
The four sciences that comprise earth science are:
|
geology, meteorology, astronomy, oceanography
|
|
A ... is a well tested and widely accepted view that best explains certain scientific observations
|
theory
|
|
The four spheres of the earth are the
|
geosphere, atmosphere, hydrosphere, biosphere
|
|
A group of interrelated, interacting, or interdependent parts that form a complex whole is knon as a _____
|
system
|