Natural Disasters

1
Natural Disasters

• 7-4.3
• Explain the interaction among changes in the
  environment due to natural hazards, changes in
  populations, and limiting factors

2
Factors that Change the Environment
Changes In Population
Limiting Factors

• Natural
• Hazards

All Lead to
3
Limiting Factors

• Food
• Water
• Space
• Shelter

4
Limiting Factor

• Limiting Factor any biotic(living/was living)
  or abiotic(non-living) factor that limits the
  of individuals in a population

5
Changes in Population

• Population Density the amount of people living
  in a given amount of space

6
Births and Deaths

• Births add to a population
• Deaths decrease a population

Immigration and Emigration
Immigration means to move in to a
population - Emigration exits the
population
7
Carrying Capacity

• What does the word carry mean???
• Example I am carrying 5 books.
• What does the word capacity mean????
• Example Clemsons Death Valley Memorial
  Stadiums seating capacity is 80,301.

8
Carrying Capacity

• The largest amount of individuals
• of a species that an environment
• can support and maintain for a
• long period of time.

9
PACT Workbook

• Read pages 132-134
• Answer Before You Read
• Answer 1-3 in the Margins
• Answer 1-3 on page 135
• Page 37 (Blue Side)
• Page 38
• Page 39

10
Landslide

• Large areas of ground movement of rock Earth

11
What are they caused by?..

• Rains
• Floods
• Earthquakes
• Human causes
• Excessive development
• Clear cutting for lumber

12
Examples of Effects
4) Disrupting Power lines
2) Damaging Homes
3) Destroying Habitats

1. Blocking Roads

13

• Wildfires

What are they caused by??????
Natural event in grasslands and forests

1. Lightning Strikes
2. Humans

14
Examples of Effects
ON THE BRIGHT SIDE . . .
3) Destroying Habitats
2) Destroying Homes

1. Increase Air Pollution

15
FLOODS

• 2 TYPES

Regular River Floods
Flash Floods

1. Deposition of sediment Nutrients
2. Creation of fertile soil

1. Damage Property
2. Endanger humans animals