development of diagnostic enzyme assay to detect leuser virus
Tornado
1. • The charges travel through the air in a lightning
discharge .
• The air along the path of a lightning bolt extremely
hot
• The air along the path of a lightning bolt extremely
hot
• The intense heat makes the air expand so fast that
sound waves are produced .
2. Tornado
• It is a violently rotating column of air that extends downward from
thunderclouds and touches the ground.
3. • A tornado starts when winds spin a column of air that
bulges from the bottom of the cloud .
• Strong updrafts ,or rising air ,are already present
inside this bulge.
• Next warm, humid air is pulled into the often funnel-
shaped column.
• The air spins so fast that an area of very low pressure
forms in the center.
4.
5. • The swirling funnel starts to descend.
• Because of the low pressure air in the near by area
rushes into the funnel.
• The air in the funnel rotates upward around the
center, joining the storm above.
• The wind speed in the tornado can reach 400km/hr or
more.
6. • The force of the tornado ‘s winds destroy houses ,
cars and anything in its path.
