apes unit 1 group

The epicenter of an earthquake exists

On the surface of the earth directly above the focus

A seismically active arc of islands, such as Alaska's Aleutian island chain is an indicator of:

The convergence of 2 oceanic plates

What occurs when denser ocean crust slide beneath lighter continental crust?

subduction

The elements of earth are separated such that the:

most dense elements are in the center, called the core

a rare rock formation is found 300km from a matching formation. The continent on which it is found is part of a plate that is moving at a rate of 36mm/yr. Which answer most closely approximates how many years ago the matching rocks were separated?

8,300,000 years

The intraplate location where hot-spot volcanism is occurring is: (map not pictured)

(A) Hawaii

Layer with inclusions (refer to a diagram of layers of earth)

(C)

The layer affected by a geological disturbance, but contains evidence that it is younger than B (refer to a diagram of layers of earth)

(C) contains 2 diff. types of rock and on top of B

The location where new crust is being created at a divergent plate boundary is: (Map not pictured)

(C) mid atlantic ridge

Layer NOT affected by a geological disturbance (refer to a diagram of layers of earth)

(D)

Youngest layer: (refer to a diagram of layer of earth)

(D)- the top most layer

The location where one tectonic plate is being forced beneath another, creating a volcanic arc is: (map not pictured)

(E) Japan

Sedimentary rock may be formed:

(E)- ALL OF THE ANSWERS ARE CORRECT a- by sediments deposited on an ocean floor b- posited in a stream c- by sediments deposited on a lake bottom d- compression by overlying sediments.

chemical weathering:

(E)- BOTH B AND D b- is part of the cycle that allows nutrients to be renewed to the soil d- may reduce atmospheric carbon dioxide

Erosion is caused by:

(E)-all answers are correct. a- wind b-water c-gravity d-burrowing animals

What can be inferred by comparing the 2 seismographs above? 1. The maximum s-wave of seismogram A has a higher amplitude than B. 2. Seismogram A shows an earthquake with a much shorter duration than B 3. Seismogram A is located closer to the epicenter than B

1. and 3. only

Fossils, formed from plant or animal remains are found in 1. sedimentary rock 2. metamorphic rock 3.igneous rock

1. only- sedimentary rock

#19 of this question got cut off in my pic!!! its talking about half-lives and what fraction of the original parent material remains

1/8

The richter scale was developed to describe the magnitude of an earthquake while corresponding with the metrics system's use of the power of 10. Therefore an earthquake with a magnitude of 5 is how many times larger than an earthquake with a magnitude of 3?

100 times

What is the maximum s-wave amplitude of seismograph A? (refer to Seismograph A&B)

170 mm (s-waves come Second)

High rates of species extinction caused by HUMAN activities have taken place at which of the following times in earth's history? 1. At the end of the Cretaceous period 2. During recent times 3. At the end of the Permian period. (refer to a graph)

2. only- during recent times

What is the s-p interval for seismograph B? (refer to seismographs A&B)

43s (find where first s-wave occurs and first p-wave occurs and subtract)

which of the following is TRUE of divergent plate boundaries?

They are where mid-ocean ridges occur

What epoch of the Cenozoic era are we currently in?

Holocene

The K-T mass extinction that killed the dinosaurs occurred between the Triassic and Cretaceous periods during which era? (refer to a graph)

Mesozoic

Where does the most volcanism in the world occur?

Plate boundaries

Most deaths in earthquakes occur because of which of the following?

Poorly constructed buildings such as brick and mortar

What earthquake term describes the vertical and horizontal movement of surface material?

Secondary wave

When a continental plate collides with another continental plate;

The 2 plates will push each other up into a mountain range.

The evidence that Alfred Wegner cited when he originally proposed the theory of continental drift was:

The way coastlines fit together like a puzzle and familiar fossils occur on both sides of an ocean