Let’s Review Our
Homework
Section 1 Review, page 181, #1 and 2
1.
Where do most volcanoes occur on Earth’s
surface?
Most volcanoes occur along divergent plate
boundaries, such as the mid-ocean ridge, or in
subduction zones around the edges of the
oceans.
2.
What process forms island arcs?
When converging plates collide, the older, denser
plate dives under the other plate and sinks into
the asthenosphere. There it melts and forms
magma, which seeps upward, creating volcanoes
that can result in an island arc.
Mapping
Earthquakes and Volcanoes
Let’s apply what we know!
In this investigation, we
will…
• Interpret data on the locations of
earthquakes and volcanoes to
find patterns.
But First…
What is the difference
between
latitude and longitude?
Lines of Latitude are horizontal
lines that measure North and
South distances
Lines of Longitude are vertical
lines that measure East and West
distances
PROBLEM:
Is there a pattern in the
locations of earthquakes and
volcanoes?
Procedure
• Use the table on page 182 to
determine the latitude and
longitude for earthquake and
volcano locations
• On a map of the United States,
locate active volcanoes and areas
of earthquake activity
Earthquake and Volcano
Latitude and Longitude Table
(found on pg 182)
Earthquakes
Longitude
120° W
110° E
77° W
88° E
121° E
34° E
74° W
70° W
10° E
85° W
125° W
30° E
140° E
12° E
75° E
150° W
68° W
175° E
121° E
Latitude
40° N
5° S
4° S
23° N
14° S
7° N
44° N
30° S
45° N
13° N
23° N
35° N
35° N
46° N
28° N
61° N
47° S
41° S
17° N
Volcanoes
Longitude
150° W
70° W
120° W
61° W
105° W
75° W
122° W
30° E
60° E
160° E
37° E
145° E
120° E
14° E
105° E
35° E
70° E
175° E
123° E
Latitude
60° N
35° S
45° N
15° N
20° N
0°
40° N
40° N
30° N
55° N
3° S
40° N
10° S
41° N
5° S
15° N
30° S
39° S
13° N
3)
4)
2)
1)
Use the information in the table to mark the location of each earthquake on the world map. Use one of the colored
pencils to draw a letter “E” inside a circle at each earthquake location.
Use a pencil of a second color mark the locations of the volcanoes on the world map. Indicate each volcano whit the
letter “V” inside a circle
Use a third pencil to lightly shade the areas in which earthquakes are found.
Use a fourth colored pencil to lightly shade the areas in which volcanoes are found.
Name:____________________ Date:__________ Class:________
4)
3)
2)
1)
How are earthquakes distributed on the map? Are they scattered evenly over Earth’s
surface? Are they concentrated in zones?
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
How are volcanoes distributed? Are they scattered evenly or concentrated in zones?
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
From your data, what can you infer about the relationship between earthquakes and
volcanoes
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
Based on the data, which area of the North American continent would have the
greatest risk of earthquake damage? Of volcano damage? Why would knowing this
information be important to urban planners, engineers, and builders in this area?
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
Analyze and Conclude – Use the table on page 182 and your map to answer the questions
HOMEWORK
• Finish your map and questions (to
be collected on Friday, 1-13-11)