As part of our ‘Natural Disasters’ topic, the next area of study will be tornadoes.
Can you find out any information about them?
- How are they formed?
- Where do they occur?
- What wind speeds can they reach?
- What type of damage can they cause?
As part of our ‘Natural Disasters’ topic, the next area of study will be tornadoes.
Can you find out any information about them?
Tornadoes are formed by thunderstorms and dry cold air.
Most tornadoes are found in the Great Plains of the central United States.
Tornadoes can reach up to 300 miles per hour.
Tornadoes can cause great damage like causing buildings to fall over and making cars fly.
Most tornadoes are formed by thunderstorms.
Tornadoes occur in many parts of the world: Australia, Europe, Africa, Asia, South America, andNew Zealand.
Tornadoes can go very fast at300 miles per hours.
They can destroy anything in its path (uproot trees and buildings).
Nearly all tornadoes form from thunderstorms.They need warm, moist air from the Gulf of Mexico and cool, dry air from Canada.
Tornadoes occur in lots of different places. They can happen in every continent except from Antarctica. Two of the highest concentrations of tornadoes ( outside the USA) are Argentina and Bangladesh.
Tornadoes damage comes from its strong winds. It is believed that they can reach wind speeds of 300mph in the most violent tornadoes.
The damage can be devastating after a tornado as wind speeds can cause cars to become airborne, rip normal homes to shreds and turn broken glass and other debris into lethal missiles.
HOW ARE THEY FORMED
Most Tornadoes form from a thunderstorm.You need warm,moist air from the gulf of Mexico and cool,dry air from Canada.When these two air masses meet, they create instability in the atmosphere .Most strong ; violent Tornadoes form within this area of strong rotation.
WHERE DO THEY OCCUR
Most tornadoes are found in the Great Plains of United States an ideal environment for the formation of severe thunderstorms.In this area ,known as Tornado Alley,storms are caused when dry cold air moving south from Canada meets warm moist air travaling north from the gulf of Mexico.
WHAT WIND SPEED CAN THEY REACH
It is generally believed that tornadic wind speeds can be as high as 300 mph in the most violent Tornadoes.
WHAT TYPE OF DAMAGE CAN THEY CAUSE
The damage from Tornadoes comes from the strong wind they contain.
Tornadoes are formed when warm moist air usually from the south, is lifted by a warm or cold front, causing an updraft. The moisture condenses into cloud and precipitation and forms a thunderstorm. Precipitation should counter the updraft but when winds blow precipitation out of the rising air, the updraft strengthens. Beneath the storm winds of different speeds form horizontal tubes of rotating air. When those tubes are ingested into the updraft they become vertical and the storm acquires rotation forming a supercell. The rotating tubes is stretched and the supercell becomes like a giant vacuum, sucking air up and away. As air rushes in to equalise the pressure s tornado is formed.
Tornadoes occur in many parts of the world, including Australia, Europe, Africa, Asia, and South America. Even New Zealand reports about 20 tornadoes each year. Two of the highest concentrations of tornado outside US are Argentina and Bangladesh.
Tornadoes can reach up to 300mph in the most violent storms.
They can destroy large buildings uproot trees and hurl vehicles hundred of yards. The fujita scale classifies tornadoes according to the damage they cause. Almost half of the tornadoes fall into the F1 or moderate damage categories. These tornadoes reach speeds of 73-112 mph.
-cool air +warm,moist
-most tornados are formed in central USA
-they can reach up to 300 mph
-destroy large buildings, uproot trees and hurl vehicles
I mean warm,moist AIR
Tornadoes are formed by hot air and gusts of wind.
Tornadoes are formed by bases of thunder storms in the earths surface. They occur 80% in the U.S especially Texas, Florida, Oklahoma and Kansas. They can reach max wind speeds of 300 mph. They can cause types of destruction like rip trees out of their roots and tear roofs from houses .