Why are some volcanic eruptions (like mt. st. helens) more explosive than others (like hawaiian volcanoes) ?

Describe each of the natural events that commonly affect the United States and Canada. We discussed five of these natural events in this lesson, including tornadoes, earthquakes, volcanic eruptions, blizzards, and hurricanes.

If phosphorus concentrations were to suddenly increase in a marine ecosystem, which of the following would likely occur? A) no change in the rate of primary productivity B) increased primary productivity C) decreased primary productivity

Imagine our solar system is moving in the Milky Way toward a group of three stars. Star A is a blue star that is slightly closer to us than the other two. Star B is a red star that is farthest away from us.

What process are needed for igneous rock to become sediment?

How far is Pluto from earth

Why was life expectancy in colonial New England considerably higher than life expectancy in the country of England?

The first inhabitants of Oceania are believed to have come from which continent?

Thunderstorms often begin with the rising of?

What are the two main forces that cause surface changes on earth? a. erosion and plate tectonics b. chemical and physical weathering c. weathering and erosion d. plate tectonics and weathering

In your own words, write an analysis of the differences between the types of tectonic plates and the resulting observations in the asthenosphere. be sure to include terminology from the lesson and direct references to your data.