Types of weather

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by bpatterson4
Last updated 8 years ago

Discipline:
Science
Subject:
Weather and Climate
Grade:
4

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Types of weather

TornadoesWhat is a tornado?A tornado is a dangerous spining column of air extending from a thunderstorm to the ground. What are tornados capable of? Most of the violent tornadoes cause tremendous destruction with windspeeds up to 300 mph.What makes tornadoes? Tornadoes are made from thunderstorms, or usually form in areas where winds all leave the atmosphere are not only strong, but also turn with height in all clockwise or veering directions. What do tornadoes look like? They look like twirly ball of air.How do tornadoes stop?Tornado researchers are trying to solve the tornado problem. Nobody knows how exactly tornadoes form, grow, and die.

C y c l o n eWhat is a cyclone? Cyclone is a large wind system that moves around an area of low atmospheric pressure.How does a cyclone happens?Low pressure usually develops in large land areas where the air rises. Surrounding air moves toward the low-pressure area and starts to circulate, either clockwise or counter clockwise depending on whether the cyclone is in the Northern or Southern hemisphere.What are the three main identifiable parts in a cyclone? 1. The eye of the cyclone is the center of storm and can be anywhere between six to 60 miles wide. 2. The region of the storm directly around the eye is the eye wall where winds rotate at a first rate around the eye. 3. Cloud chains are the clouds that form around the outside of the storm. These clouds increase the size of the cyclone.

Cold FrontWhat is a cold front?A cold front is the changeover region where a cold air mass is replacing a warm air mass.How is a cold front represented on a weather map?A cold front is represented by a solid line with blue triangles along the front pointing the warmer air and in the direction of movement.Other facts about a cold front. 1. Cold weather front moves from northwest to southeast. 2. The air behind the front is colder and drier than the air in front.3. When a cold front passes through, temperatures can drop more than 15 degrees within an hour.

Types of Weather

HurricanesWhat is a hurrican?A hurrican is a huge storm. It is an intense, rotating ocean weather system that possesses maximum sustained winds at 74 mph.Where does a hurrican form?It forms over tropical oceanic regions.What does a hurrican need?Warm ocean warm water of 80F or warmer provides a energy for the hurrican and causes more evaporation making humid air and clouds. Winds coming together force air upward. Winds flow outward above the storm, allowing the air below to rise. Humid air rising makes the clouds of the storm. Light winds outside the hurrican steer it and let it grow.What does a hurrican need to create a spin?The Coriolis Force is needed to create a spin.Where does a hurrican do not form?Hurricans can never form near the equator because the Coriolis Force becomes too weak there.

BizzardsWhats a bizzard?A bizzard is a long-lasting snowstorm with very powerful winds and hard snowfalls.What are 3 things you needed to make a bizzard?1. Cold air ( below freezing) is needed to make snow.2. Moisture is needed to form clouds and percipatation.3.Warm rising air is needed to form clouds and percipatatation.Are blizzards dangerous?Yes, blizzards can create life threatening conditions. Traveling by car or foot is highly not recommended because it increases the chance of , accident, and death.

ThunderstormWhat is a thunderstorm?A thunderstorm is a storm with lightning and thunder.What makes thunderstorm?Moisture, unstable air and lift are needed to make a thunderstorm.What causes a thunderstorm?You need moist to form clouds and rain. You need air that is warm and can rise fast. Finally, you need lift. This can form from fronts, sea breezes, or mountain.When are thunderstorms most likely to occur?Thunderstorms are most likely to happen in the spring and summer months and during the afternoon, but they can occur year-round and at all hours.Are thunderstorms dangerous?Yes, all thunderstorms are dangerous. Every thunderstorm produces ligtning, which kills more people each year.

FogWhat is a fog?Cloud of small water droplets near ground level and form to reduce horizontal visibility less than 1000m....How is fog formed?Fog is mostly formed when southerly winds bring warm, moist air into a region, possibly ending a cold outbreak.What is fog made up of?Fog is made up of tiny droplets of water that float suspend in the air, but it also may consist of ice particles during very cold conditions.What are the different ways of fog formed? 1. As the warm, moist air flows over much colder soil or snow, hard fog often forms. 2. Warm, moist air is cooled from below as it flows over a colder surfce. If the air is near, moisture will form out of the cooled air and form fog. 3. With light winds, the fog near the ground can become thick and reuce visibilities to zero.

SleetWhat is sleet?Sleet is rain or melted snow that freezes into ice pellets before reaching the ground . How does sleet happen?There must be a layer of air near the ground whose temperture is below freezing. Above this layer of freezing air must be a layer of warmer air. As snow falls through the warm air, it melts into raindrops. As the melted snow falls through the cold layer of air, it re-freezes. It forms into sleet before hitting the ground.When does sleet form?Sleet forms as it falls. Sleet usually falls in the winter.Are sleets dangerous?No, sleet usually cannot do sever damage to crops or transportation systems. In fact, sleet is so light and tiny. It usually bounces when it hits a hard surface.

Dust StormWhat is a dust storm?Dust storm is strong, violent wind that carries find particles like silt, clay, dust, and other materials for long distances.When does dust storm happens?Dust storms don't just happen in the middle of the desert. They happen in any area where loose dust can easily be picked up. Are dust storms dangerous?Yes, the dust is blinding, making driving impossible because dust forms usually arrive without warning and advance in form a big wall of dust. Often they only last for a few minutes, but storms usually leave serious car accident behind in mild storms, it's still possible to walk around although you would not want to. You can't see anything because of the dust particles flying around.

HailWhat is hail?Hail is solid precipitation that falls from thunderstorms as round or irregular balls of ice or ice-pallets.Where does hail form?Hail goes up into the sky and falls then goes back up again and gets bigger and bigger. Finally when it is heavy enough it falls. How does hail originates?Hail originates as a frozen rain that is kept from falling by draft currents within a cumulonimbus cloud triggering heavy showers or thunderstorms.


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