Show:
volcanoes
e quakes and volcanoes
time after time
history
earth history
100
Us hotspots
Yellowstone and Hawaii
100
wave that can move only through solid
S wave
100
missing time between two sedimentary layers
disconformity
100
preservation of soft parts
amber ice
100

what is a stromatolite

oldest fossil 3.5 billion years old

200

Most explosive volcano with pyroclastics

composite

200
cause of tsunami
earthquake, slide, eruption
200
Youngest rock is exposed at the center
syncline
200
Principle of cross cutting
what cuts is younger than layers cutting through
200

What is the source for early earth’s atmospheric gases

outgassing of volcano

300

type of volcano that can produce nuee ardent

composite

300
majority of earthquakes happen along
the circum pacific belt
300
head wall up and foot wall down
reverse fault
300

Where did early earths carbon go

into the rocks

300

T or F   sedimentary and metamorphic rocks are best for radiometeric dating

false

400
Earths magnetic field switches every _____years
200 million
400
This type of volcano forms small steep cones and erupts mostly rock and debris
cinder cone
400
Principle of uniformatarianism
present is the key to the past
400

What type of decay emits 2 protons and 2 neutrons?

alpha

400

Name one organism of the precambrian

???

500

What is the fate of the land west of the San Andreas fault?

Slide northward past the North American plate

500
cause of an earthquake
The buildup of strain within a slab of rock
500
tensional stress results in what type of fault
normal
500

Which of the following fossil type is formed from a shell or other material being buried and then dissolved by groundwater

mold

500

What makes up the continental crust along the west coast of North America

accreted volcanoes