30 of the earth is made up of what

An earthquake happens near a city with a seismograph station. The earthquake is recorded and calculated to have a magnitude of 4.2. What magnitude will a city 20 miles away record and calculate? A.) 2.0 B.) 3.4 C.) 4.2 D.) 5.0

Which of the following features are two physical characteristics of Iceland? A. high mountains and plateaus B. volcanoes and hurricanes C. hot spring and glaciers D. flatlands and fjords

Hypothesis that states that the continents were once one large mass that broke apart. A.) Sea-floor spreading b.) Continental drift c.) Magnetic Reversal D) Magnetic Minerals E.) Fossils

Over the past 70 million years or so, the Hawaiian hot spot has been pumping out lava, a total of about 186,000 mi3 worth.

Mt. elbrus is located in the ural mountains. true or false.

Where are monsoons are most commonly found?

What role do ocean currents play in a crocodile's migration?

Though the population of Arab Southwest Asia is small, this region still plays an important part in world affairs. Why? A. Oil wealth and their role in the Arab-Israeli peace process B. They have democratic governments and strong trade policies. C.

What is considered one of the biggest threats to folk cultures around the world

What is erosion A) the melting of solid sheets of ice near the top of a mountain B) a natural event that happens quickly, such as lightning striking a tree C) the name given to the very slow change of rocks being worn down