Science

approximately how much of Earths surface is covered by water ?

C. 70 percent

The largest of earths oceans is the

A. Pacific ocean

Which of the following is NOT true about deep ocean trenches?

C. They are geologically very stable

Which of the following occurs at the continental margin in the pacific Ocean?

D. all of the above

Which regions are thought to be the most level places on earth?

B. abyssal plains

Which part of the ocean is deepest?

B.rifts

what is the most abundant salt in the sea ?

D.sodium chloride

in addition to salinity, what factor affects the density of seawater?

C.temperature

Organisms that drift with ocean currents are called?

B.plankton

The energy that drives surface ocean currents comes from

B wind

What causes surface ocean currents to be deflected?

B.the corilolis effect

The rising of cold water from deeper layers to replace warmer surface water is called ?

C. upwelling

what is the most abundant gas in the atmospere?

B.nitrogen

Most important weather phenomena occur in the ?

C.troposphere

Which of the following is true about equinoxes ?

C.Days and nights are equal in length everywhere

Earth receives energy from thr sun trough what method of heat transfer

C.radiation

in general, what is true about places at higher altitudes ?

A. they have cooler temperatures than places at lower altitudes

Rain, snow , sleet , and hail are all examples of

C. precipitation

Air that has reached its water-vapor capacity is said to be

D. saturated

The force exerted by the weight of the air above is called

A. air pressure

in which direction is air pressure extered

D.all of the above

which force generates winds?

C.pressure differences

A wind that consistently blows more often from one direction than from any other is called a

B.prevailing wind

Which instrument is used to measure wind speed ?

A anemometer

An immensde body of air characterized by similar properties at any given altitude is known as a ?

B. air mass

Maritime air masses form ?

B. over water

An mT air mass is best described as ?

D. warm and wet

The boundary that seperates different air masses is called a ?

A. front

What type of front forms when the surface position of the front does not move ?

C. stationary

The eye of a hurricane has the ?

B. warmest temperature

The rain shadow effect is associated with ?

D. mountains

What is the relationship between elevation and climate?

A. The higher the elevation is the colder and climate

What two factors are used to classify climate in the Koppen climate classification system ?

C.temperature and precipitation

Which of the following is an example of human impact on climate changes?

C. global warming

What is the shape of a planet's orbit

A. elliptical

What movement of earth is responsible for night and day?

A. rotation

Seasons are caused by ?

C. earths tilted axis

How old is the moon

B. about the same age as earth

Which of the following is not a jovian planet?

A. earth

Which of the following in not a terrestail planet?

D. jupiter

The formation of the solar system from a huge cloud of dust and gases is called the ?

B nebular theory

Jupiters great red spot is beleived to be a?

C cyclonic storm

Most asteroids lie between the orbits of ?

D mars and jupiter

The small particles that produce a streak of light upon entering eatrhs atmosphere are called

B. metors

What information does a stars spectrum offer about the star?

B chemical composition

Using the doppler effect astronomers can determine a star ?

C. movement toward or away from earth

The outermost layer of the sun is called the

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