Four regions (A through D) are marked on the figure. 

In which regions are earthquakes most likely to occur? Choose the best answer.

What happens to the material of a plate that goes under another plate?

Which statement best describes what happens between two plates as they separate?

 Which regions show one plate moving toward another plate? Choose the best answer.

Which of the following processes caused the separation of South America and Africa?

Geologists say that there was once a single continent on Earth called Pangea.

How long did it take for the single continent to split and move into the continents we see on Earth today?

Two plates move toward each other. Plate A is more dense (heavier for its size) than Plate B.

Which of the following outcomes is likely to occur?

Which of the following pictures best represents the plate movements between the divergent boundary segments?

From the images above, it is clear that the South American continent and the African continent have been separating.Which features formed between South America and Africa (the boxed area in the image below) as the continents separated? Choose the best answer.

Based on the image of GPS station movement, which direction is Australia (the continent in the lower right corner of the map) moving?

Where do you think Africa was located 10 million years ago, based on how it is moving today?

How far from P1 on the geographic profile does the land elevation rise above sea level?

How far from Point P1 is the lowest point (the trench) on the geographic profile of the Andes?

In the relief map in Seismic Explorer, what color represents the trench (deepest parts of the ocean)?

Where is the youngest oceanic crust?

At which type of boundary does ridge push occur?

At which boundary type does slab pull occur?

How does gravity cause plates to move?

Below is a zoomed-in image from Seismic Explorer showing the plate boundary at a mid-ocean ridge. The two plates are labeled.

The blue lines represent sections of divergent boundary, and the pink lines represent transform boundaries. Arrows show the directions of movement at the divergent and transform boundaries.

Why does the arrow direction at the transform boundary match the arrow direction at the divergent boundary?

Which of the factors in the Flood Diamond include information about the slope of the land?

Look at the photo. What do you think happens to rain when it falls at the top of the hills near the city? Select all that apply.

In which zone do you think water flows the fastest?

In which zone do you think flooding is most likely?

Which area on the map has the steepest slope?

Which area on map is relatively flat?

If there was a large rain storm, and the river water began to rise, which area on the map do you think is likely to flood first?

Take a look at the map below. This map shows areas in the US that have experienced a change in flood size over the last 100 years. Larger triangles indicate an increase in flood size over time.

Which regions have experienced an increase on large floods over the last 50 years (positive trends)?

What is the maximum total area flooded?

Approximately how many days did Silverton experience flooding?

Which region has experienced increases in precipitation compared to the 1901-1960 average?

Which region has experienced decreases in large flooding events?

Which map, past (Silverton) or present (Silver City), has more impermeable surfaces?

The picture shows part of downtown St. Louis. Which of the following do you notice about the area between the river and the buildings?

Look at the photo. The house is almost completely under water.

What are some of the ways that inundation could impact the people living in this neighborhood?

imagine a farm was inundated to this level. What is not a harmful impact be to that farm?

What is not a benefit flooding has for the environment?

Examine the map

What areas do you think the levee shown in red was built to protect?

What is tephra?

The area where tephra falls and the thickness of the layer of tephra is called 

What does VEI stand for?

What is the numerical range of VEI?

Which two factors do scientists use to formulate the VEI?

Ash and volcanic bombs are examples of 

Factors that impact tephra distribution are

The possibility of a volcanic eruption negatively impacting people's lives such as causing loss, damage, or injury   is

Anything that has the potential to harm someone or something.  is

Plans to reduce risk and hazard in a volcano eruption generally include evacuation

How many acres were flooded?

How many does days does flooding occur?

How many days does flooding occur?

how many acres are flooded?

Which side of the Flood Diamond does building a levee change the most around the river?

Which of the following statements best describes how these broken pieces (plates) on the surface of Earth move?

Scientists say that Earth's surface is broken up into many pieces (plates). 

As seen from above, which image best represents Earth's surface?

There is evidence that there was once only a single continent called Pangea. Currently, seven continents exist on Earth. See the picture.

Which of the following statements best describes what happened to Pangea?

It takes high temperatures to make natural gas. The high temperatures are present far below the surface, at high pressures. What temperature range is needed to produce natural gas

Rocks and sediments vary in their porosity (space that can hold liquid or gas).

What do you think is the porosity of the shale that makes it able to hold gas?

Rocks and sediments vary in their permeability (ability of liquid or gas to flow through the rock). 

What do you think is the permeability of the shale that makes it able to hold gas?

Based on the information in the graph, what will happen to electricity consumption in the future?

Electricity consumption in the future will