2. Lightning is formed when excited
electrons in the clouds are attracted to
positive charges within a cloud,
between clouds, or on the ground.
What type of energy is released when
4. Tornado warnings are issued when
tornadoes have been sighted in an area.
When do you think tornado watches are
When conditions are
right for tornadoes to
5. What effects does a
volcanic eruption have
on the local
• Ash and dust in the air can affect
plants and animals in the area
• Lava flow can kill trees and other
• Coral reefs can be destroyed by lava
flow into the ocean
6. Explain why hurricane
season in the Atlantic
Ocean is from June to
The ocean temperatures
must be warmer than 80°F.
The summer months have
the warmest temperatures.
7. Name at least 1
1. Hail that is ¾” or bigger
2. Wind gusts greater than 58
3. Tornado formation
8. Name at least 1 condition that must
be present for a hurricane to form.
• Ocean temperature greater than 80°F
• Winds of similar speed blowing in the
• Drop in atmospheric temperature as winds
• Location: just north of the equator over the
• Dry winds blowing off the African coast
9. When a tropical storm reaches the
criteria to be classified as a
hurricane, it is given a name. How
are hurricanes named?
12. Which describes a drought?
A.A very long period of heavy rain
B.High temperatures for an
extended period of time
C.A large wave generated by an
D.An extended period of very dry
13. What structure in Galveston
was built to protect the island
from storm surges?
A.The Hotel Galvez
E.Schlitterbahn Water Park
16. Hurricanes are called by
another name when they
occur in the Southern Pacific
Ocean, the Indian Ocean,
and near Australia. What is
17. Of all the natural disruptive
events we have learned
about, which has the most
widespread negative effect
on Texas ecosystems?
18. Name at least 1 vehicle or
tool scientists use to monitor
19. Which part of volcanic
eruptions is responsible for
affecting Earth’s weather and
Dust and ash
ejected into the
20. Cyclone: a tropical storm that forms in the
Southern Pacific or Indian Ocean
Typhoon: a storm that forms in the
Northwest Pacific (near Japan)
Hurricane: severe tropical storm that forms
over the North Atlantic Ocean
What do all these storms have in common?
24. Tornado Alley
Nebraska to Texas.
Why is this region
prone to tornado
Conditions in tornado alley are favorable for tornado formation.
During the summer, the plains of Middle America get very hot
(creating updrafts) and there are many thunderstorms. Tornadoes
form during thunderstorms, when unstable hot air near the ground
rises and meets the cooler air above in the thunder clouds.
Tornadoes can form at any time of the year, but most of them form
from March to August (in the Northern Hemisphere). The flatter
landscape allows storms to travel without mountains or other
landforms to block them.