hazards test 1

Which of the following is not an anticipatory response to the problem of flooding

Delivering food and clothing to the most hard hit areas

Which layer of earth has the highest density?

Core

Why is it necessary for scientist to study natural hazards

All of the above are reasons why scientist study natural hazards

The heat for Earth molten outer core is derived from

All of the above are correct

As compared to the lithosphere, the asthenosphere is

Hotter and more able to flow

_____ rock always originate at the surface of the solid earth

Sedimentary

the _____ bond results from atoms sharing electrons

Covalent

Gabbro is an example of a plutonic igneous rock, ____ is an example of a volcanic igneous rock

Basalt

Over the last 50 years according to your textbook what has happened to the number of natural disasters

Increased

Which of the following statements is not correct

Sedimentary rocks may break up and be deposited as igneous rocks

A tectonic place is

A discreet piece of the lithosphere that shows little or no internal displacement

When discussing populations the natural rate of increase is

Equal to birth rate minus death rate

At transform plate boundaries

Earthquakes are common, but volcanoes are absent

At a convergent boundary two lithospheric plates

Move towards eachother

The current population of the planet is approximately

8.1 billion

On average the continental crust

Is less dense than oceanic crust

The fact that the earth is layered is a direct result of

Density

Based on chemistry the ____ is the thinnest layer of the earth

Crust

All of the following are properties of a mineral except

Organic

The asthenosphere is actually a part of the _____ of the earth

Mantle

If an ion had more protons than electrons it is called a

Cation

Which of the following is not a chemical layer of the earth

Lithosphere

Earthquakes occur primarily

Along plate boundaries

The thickness of the oceanic crust varies from

7-10km

Which of the following is not a primary source of energy that drives natural disasters in the planet

The moon

Which of the following igneous rocks had the highest silica content

Granite

Atoms of the same element that different in the number of neutrons is a

Isotope

We talked about several lines of evidence given by Wegener and support of his theory of continental drift, which of the following is not one of them

Magnetic stripes on the sea floor

The thickness of sediment on the ocean floor is greatest

At the edges of the ocean basins farthest from the ridge crest

Which of the following statements correctly describes the magnitude frequency concept

The larger the natural hazard the less likely it will occur

Which of the following is an example of a mineral

Ice

Based on you’re readings in science what are the main factors for high fertility rates

Less wealthy poorly educated woman have more children

According to the population article in science where will the slowest population growth occurs over the next 40 years

Japan

What happens to the velocity of an S wave that is travelling through the earth and encounters a molten magma chamber

It will drop to zero

In order from center outward, earth includes which units based on composition

Core, mantle, crust

Natural hazards differ from disasters in that

Disasters refer to the effects that hazards have on people and property

Metamorphic rocks result from

Changing pressure and or temperature in the solid state

The East African rift is an example of what kind of plate boundary

Diverging plates

Marie that o mapped the sea floor and discovered oceanic ridges which helps explain plate tectonics

True

Which of the rocks listed below results from the precipitation of ions directly from the sea water

Chemical sedimentary rock

What type of rock forms in layers with the oldest being on the bottom

Sedimentary

An earthquake in Mexico City with a moderate magnitude may cause a catastrophe rather than a disaster because

All of the above are reasons for a catastrophe

The s was shadow zone provides evidence for

The outer core being liquid

At a subduction zone the downgoing (subducting) plate

Is always composed of oceanic lithosphere

Hawaii is an example of

Hot spot volcanism

At what depths are the foci of earthquakes located in subduction zones

All of the above

What is the name of your professor

Dr Harris

Which of the following rocks listed below types will produce the lowest temperature magmas

felsic

The energy for the tectonic cycle comes from

Heat from within the earth

The idea of the seafloor spreading was developed by

Harry Hess