Lab-math test 1

1 ft=

12 in

1 mi=

5280 feet

1 in=

2.54cm

1 mi=

1.6 km

1 m=

100 cm

1m=

1000 mm

1cm-

10mm

1 km= 1000m

1 MY (million years)=

1,000,000 years

Distance (D)=

rate (R) x time (T) 

Rate=

D/T

Time=

D/R

_____ let us see deep and
shallow locations in the ocean, and
high/low elevation areas on land

Geography

____ showed the
distribution of rock ages on the ocean
floor

Geochronology

____ showed locations and
depths of earthquakes

Seismology

____ showed locations of
active volcanoes on land plus
volcanoes in the ocean that rise
above sea level

Volcanology

If you wanted to identify a plate
boundary, what data set is best?

There is no consistent relationship
between plate boundaries and
geography, geochronology, or
volcanology data (using any one of
these data sets would let us identify
some boundaries but not others)

If you wanted to identify a plate
boundary, what data set is best?

Seismology was the one data set that
could be used to locate every plate
boundary—every plate boundary has
a higher ‘concentration’ of
earthquakes than areas that are not
plate boundaries!

Group them based on a ___
relationship, for instance:

common, Volcanoes directly on the boundary
• Volcanoes to one side of the
boundary
• No volcanoes