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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