What is a weak region in the crustal rock where movement of the Earth occurs?

What is the vibrations of the ground produced during an earthquake?

What is a seismic wave that causes rock particles to move perpendicular to the direction of the waves?

What is a seismic wave that squeezes and pushes rocks in the same direction that the wave travels?

What is the slowest traveling seismic wave that moves along Earth’s surface and cause the ground to move sideways and up and down?

What is the point of initial fault rupture of an earthquake ; usually several kilometers below Earth's surface?

What is the point on Earth's surface directly above the focus initial fault rupture of an earthquake?

What is the instrument used to measure horizontal or vertical motion during an earthquake?

Which type of fault is shown?

Which type of fault is shown?

Which type of fault is shown?

What can be determined by the distance between seismic waves on a seismogram?

What are the three types of stress?

What are the three types of seismic waves?

What are the three types of faults?

What is a large ocean wave generated by vertical motions of the seafloor during an earthquake?

What are sections located along faults that are known to be active, but which have not experienced significant earthquakes for a long period of time?

Earthquake intensity depends primarily on the height of

As the distance from a quake's epicenter increases,

Maximum earthquake intensity is usually found at the earthquake's

In soft earth material seismic waves cause ground motion to be _____.

Upon what two factors is the probability of earthquake occurrence based?

The amount of water vapor in the atmosphere at a given location on Earth's surface

Process that occurs when the amount of water vapor in a volume of air has reached the maximum amount possible for that temperature

The amount of water vapor in a volume of air relative to the amount of water vapor needed for that volume of air to reach saturation

Small particle in the atmosphere around which water droplets can form

Process that occurs when an air mass is forced to rise over a topographic barrier

Low level clouds that are puffy and lumpy-looking (occur below 2000 meters)

Low level cloud that are layered and sheetlike that covers much or all of the sky in a given area (occur below 2000 meters)

High level clouds made up of ice crystals and have a wispy, indistinct appearance (occur above 6000 meters)

Ozone in Earth's atmosphere is important because it

Process that occurs when cloud droplets collide and join together to form a larger droplet

Which layer of the atmosphere contains concentrated ozone

Which layer of the atmosphere is just above the stratosphere

Which layer of the atmosphere is where weather occurs?

Which layer of the atmosphere is the outermost layer?

What two factors are clouds classified by?

Dust and sea salt are examples of _____ that aid in the formation of cloud droplets

In orographic lifting, clouds form when moist winds

Temperature in the troposphere ______ as altitude increases

Temperature in the stratosphere ______ as altitude increases

Temperature in the mesosphere ______ as altitude increases

Temperature in the thermosphere ______ as altitude increases

As temperature decreases, pressure ______.

As temperature decreases, density ______.

As temperature increases, density ______.

How are clouds formed?

What are short-term variations in atmospheric phenomena that interact and affect the environment and life on Earth?

What are the long-term average of variations in weather for a particular area?

What is the large volume of air that has the same characteristics, such as humidity and temperature, as its source region?

What is the the area over which an air mass forms?

What is the weather instrument that measures temperature using either the Fahrenheit or Celsius scale?

What is the weather instrument that measures air pressure?

What is the weather instrument that measures wind speed?

What is the weather instrument that measures relative humidity?

What is the instrument used for gathering data on temperature, pressure, and humidity in the upper-atmosphere?

High-pressure systems usually are associated with _____.

Low-pressure systems usually are associated with _____.

A __________ is a narrow region that separates two air masses of different densities.

__________ is used to measure the speed of raindrops toward or away from a specific point.

Where do Maritime air masses form?

Where do Continental air masses form?

Where do Tropical air masses form?

Where do Polar air masses form?

Sinking air, caused by the trade winds, creates weak surface winds and is responsible for which landmark on Earth?

Trade winds cause air to be forced upward at the equator and deliver moisture. This combination is responsible for which landmark on Earth?

Which front is created when cold, dense air displaces warm air and forces the warm air up along a steep slope?

Which front is created when advancing warm air displaces cold air and develops a gradual boundary slope?

Which front is created when two air masses meet, but neither advances and the boundary between them stalls?

Which front is created when a cold air mass moves so rapidly that it overtakes a warm front and forces the warm air upward and causes the advancing cold air mass to collide with another cold air mass that was in front of the warm air?

What two factors are most important in weather forecasting?

Which type of forecast is most reliable?

What is the type of thunderstorm in which air rises because of unequal heating of Earth's surface within a single air mass?

What is the type of thunderstorm that occurs when an air mass rises from orographic lifting?

What is the type of thunderstorm that commonly occurs along a coastal area because land and water store and release thermal energy differently?

What is the type of thunderstorm produced by an advancing cold or warm front?

What is the channel of partially changed air called?

What is the branched channel of positively charged particles that surges from the ground to the cloud called?

What is an extremely powerful, self-sustaining thunderstorm characterized by intense rotating updrafts?

What are violent downdrafts that are concentrated in a local area?

What is a violent, whirling column of air in contact with the ground that forms when wind direction and speed suddenly change with height (often associated with a supercell)?

What is a large, low-pressure, rotating tropical storm that gets its energy from the evaporation of warm ocean water and the release of heat?

What occurs when powerful, hurricane-force winds drive a mound of ocean water toward shore, where it washes over the land, often causing enormous damage?

What is an extended period of well-below average rainfall?

What is an extended period of above-average temperatures?

What is an extended period of below-average temperatures?

What measures the windchill factor, by estimating the heat loss from human skin caused by a combination of wind and cold air?

What is the calm center of a tropical cyclone?

What is the band where the strongest winds in a hurricane are usually concentrated, surrounding the eye?

How are thunderstorms classified?

What causes thunder?

What causes the air of a tropical storm to rotate?

A _____ is a common side effect of a drought.

What type of clouds produce thunderstorms?

What sparks the development of a tornado?

What causes lightning?

Which of the following would work against the development of a thunderstorm?

Whether or not thunderstorms develop on a particular day depends on

Which statement below might explain how lightning occurs?

Which of the following weather systems always forms over the ocean?

The intense updrafts and downdrafts that characterize severe thunderstorms are the result of

Pollution from an industrial site is an example of a _____.

Pollution from runoff from roads is an example of a _____.

Disease, predators, and competition for food are all examples of _____.

Storms, floods, and fires are all examples of _____.

What is an example of natural air pollution?

Aggregates, bedrock, and metallic minerals are all _____.

Where does most energy on Earth come from?

Many different types of fossil fuels exist, but they are all originated from _____.

Which is an example of an alternative source of energy?

Which force is most directly responsible for the creation of fossil fuels?

What activity or segement of the population puts the greatest demand on water supplies in the United States?

As any population increases, its demand for natural resources _____.

Which greenhouse gas has increased as a direct result of burning fossil fuels and deforestation?

Check all that apply : Which of the following are renewable resources?

Check all that apply : Which of the following are nonrenewable resources?

Which method of water control affects the most freshwater resources?

Check all that apply : Which of the following are biomass fuels?

Check all that apply : Which of the following are fossil fuels?

Check all that apply : What resources are necessary to meet the basic needs of an organism?