1. Environmental Health
Natural Disasters

2. How can physical events in the environment affect our health?
Do Now: With a partner, discuss about any times you may have had any experience with a natural disaster

3. Environmental Health
Types of health hazards can be biological, social, chemical, or physical

4. Earthquakes
The shaking that occurs during an earthquake can destroy natural landforms as well as human-made structures

5. Earthquakes
Surface Effects: They can set off landslides depending on how much shaking occurs

6. Earthquake Damage and Safety
Damage: Can cost millions of dollars as well as large losses of life
Safety: Scientists cannot predict when one will happen
All we can do is note areas with high-risks

7. Earthquake Damage

8. What can we do to survive an earthquake?
1)Take cover under something sturdy
2)Cover face and head
3)Keep clear of things that could possibly fall or are not bolted down
4)Stay away from tall buildings, power lines, and streetlights

9. Volcanoes
The molten rock, gas, and ash released during a volcanic eruption can cause significant damage and loss of life in nearby cities and towns

10. Molten rock can cover large areas of land
Volcanoes
Damage:
Molten rock can cover large areas of land
Gas and ash can be spewed into the atmosphere and disrupt insolation as well as global wind patterns

11. Damages

12. Preparing for an eruption
Scientists cannot predict when or how big an eruption will be in the future
Scientists CAN sometimes warn people with enough time to move away from an area

13. Tornadoes, Hurricanes, Thunderstorms

14. Tornadoes
A type of windstorm in which a funnel of rotating air drops down from a cloud and touches Earth’s surface

15. Tornadoes can cause devastating damage
Tornado Damage
Tornadoes can cause devastating damage
Examples: Flattening houses, lifting cars, and lifting and throwing other objects

16. Seek shelter in lowest floor of building
Tornado Safety
Seek shelter in lowest floor of building
If in a car, find nearest sturdy, low point and lie down, protecting your head

17. Hurricanes
Powerful storms that form over the oceans that brings high winds, heavy rain, and a storm surge

18. Hurricane Damage
Destroy buildings, wash away beaches, blow away trees, severe flooding, and blowing roofs off of homes

19. Hurricane Safety
Secure your home before it hits, we CAN predict where and when they will hit once they form over the ocean
Possible evacuations.

20. Thunderstorms Storm that produces lightning and thunder
Also produces heavy rain, sometimes hail

21. Thunderstorm damage Heavy rain can cause flooding
Strong winds can blow down power lines and trees
Large hail can damage houses, cars, and hurt people

22. Thunderstorm safety Stay indoors in severe thunderstorms
If you are outside, stay away from trees and tall power-lines

23. A large mass of snow sliding down a slope
Avalanches
A large mass of snow sliding down a slope
In North America, avalanches can send 300,000 cubic yards of snow crashing down a mountain
(roughly equal to about 20 football fields each filled with 10 feet of snow)

24. Avalanche Conditions
Unstable snowpack on slopes with a degree of 30 or more are susceptible to avalanches
Heavy snowfall can also increase susceptibility because of the weight of the snowpack

25. In 2008 and 2009, 27 Americans died in avalanches
Avalanche Damage
Avalanches can both bury people and places in large masses of snow. Also, can block roads, rail roads, and damage bridges or power-lines
In 2008 and 2009, 27 Americans died in avalanches