Earth science
1. which statement about earthquakes is accurate? select the two correct answers.
a most earthquakes are not strong enough to be felt by humans.
b more than 1 billion earthquakes happen per year.
c about 100 earthquakes per year are strong enough to cause damage.
d fewer than 100,000 earthquakes happen per year.
e a few hundred earthquakes per year are strong enough to be detected by instruments.
2. geologists found fossils of similar marsupials from the same time period across south america, africa, antarctica, india and australia. what theory is supported by this discovery?
a early marsupials were strong swimmers.
b a vast land bridge once connected those continents.
c the processes happening today are the same processes that have occurred in the past.
d those continents were once a part of one supercontinent.
3. which statement describes a volcano that is classified as dormant?
it is expected to erupt soon.
it has not erupted recently.
it is not expected to ever erupt again.
it has never erupted.
4. how were the himalayas formed?
due to a sudden shift along a transform boundary
due to an increase in volcanic activity
when two plates collided with each other
when a mid-ocean ridge split apart
5. which information is needed to construct a geomagnetic time scale? select the two correct answers.
the magnetic direction of rocks along the surface of earth
the length of the mid-oceanic ridge
the age of rocks along the surface of earth
the average speed of tectonic plates on earth
6. at which type of plate boundary would a string of small volcanic islands most likely form?
convergent ocean-land boundary
convergent ocean-ocean boundary
divergent ocean-ocean boundary
transverse boundary
7. identify the type of plate boundary that created the volcanoes of iceland.
a divergent boundary on land
a convergent boundary on land
a transverse boundary on land
a divergent boundary in the ocean