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Natural Disasters
Natural Disasters Vocabulary
| Term | Definition |
|---|---|
| Wind | The perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction. |
| Air pressure | Is the force exerted onto a surface by the weight of the air. |
| High pressure system | Is a whirling mass of cool, dry air that generally brings fair weather and light winds. |
| Low pressure system | Is a whirling mass of warm, moist air that generally brings stormy weather with strong winds. |
| Westerlies | A wind that blows from the west |
| Easterlies | A wind that blows from the east. |
| Trade winds | A wind blowing steadily toward the equator from the northeast in the northern hemisphere or the southeast in the southern hemisphere, especially at sea. |
| Global wind | Global Winds are the dominant prevailing wind patterns that blow in a fairly constant, steady direction across our earth. |
| Doldrums | An equatorial region of the Atlantic Ocean with calms, sudden storms, and light unpredictable winds. |
| Sea breeze | A breeze blowing toward the land from the sea, especially during the day owing to the relative warmth of the land. |
| Land breeze | A breeze blowing toward the sea from the land, especially at night, owing to the relative warmth of the sea. |
| Jet stream | a narrow, variable band of very strong, predominantly westerly air currents encircling the globe several miles above the earth. |
| Energy | power derived from the utilization of physical or chemical resources, especially to provide light and heat or to work machines. |
| Coriolis effect | On the earth, the effect tends to deflect moving objects to the right in the northern hemisphere and to the left in the southern and is important in the formation of cyclonic weather systems. |
| Hurricane | a storm with a violent wind, in particular a tropical cyclone in the Caribbean. |
| Tornado | a mobile, destructive vortex of violently rotating winds having the appearance of a funnel-shaped cloud and advancing beneath a large storm system. |
| vortex | a mass of whirling fluid or air, especially a whirlpool or whirlwind. |
| Focus | The location where the earthquake begins. |
| tectonic plates | two sub-layers of the earth's crust that move, float, and sometimes fracture and whose interaction causes continental drift, earthquakes, volcanoes, mountains, and oceanic trenches. |
| normal fault | A geologic fault in which the hanging wall has moved downward relative to the foot wall. |
| reverse fault | A geologic fault in which the hanging wall has moved upward relative to the foot wall. |
| strike-slip fault | a fault in which rock strata are displaced mainly in a horizontal direction, parallel to the line of the fault. |
| p-waves | longitudinal earthquake wave that travels through the interior of the earth and is usually the first conspicuous wave to be recorded by a seismograph. |
| s-waves | a wave motion in a solid medium where the medium moves perpendicular to the direction of the travel of the wave. |
| Richter scale | a numerical scale for expressing the magnitude of an earthquake on the basis of seismograph oscillations. |
| epicenter | the point on the earth's surface vertically above the focus of an earthquake. |
Created by:
g8torgirl05
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