Natural Events and the Environment

Question 1

What are human factors that effect the environment

Answer 1

urbanization
deforestation
waste disposal
resource extraction
man-made structures
greenhouse gases

Question 2

Urbanization has resulted in increases in

Answer 2

population living in urban areas
land used for urbanization
development in high risk areas

Question 3

What are the effects of deforestation

Answer 3

increased soil erosion

increased flooding

Question 4

Effect of waste disposals

Answer 4

contamination of water sources

changes to Earth’s surface

Question 5

Effects of resource extraction

Answer 5

can be damaging

disturbs balance of ecosystems

Question 6

Effects of highways on hill slopes

Answer 6

increase in slope failure or landslides

Question 7

Effects of seawalls and groins

Answer 7

alter the sand deposition

can increase beach erosion

Question 8

Greenhouse gases may contribute to the increase in…..

Answer 8

natural disasters

Question 9

General impacts of natural events

Answer 9

death and injury
property damage and loss
weakening of social infrastructure 
economic
environmental changes

Question 10

What is Lahar

Answer 10

combination of water and rubble and flows from the slope of a volcano

Question 11

What do Lahars trigger

Answer 11

excess rainwater
melted snow or ice
landslides
earthquakes

Question 12

What is a pyroclastic flow

Answer 12

dense mix of dry hot rock fragments and hot gas erupted from volcano vents at high speeds

Question 13

pyroclastic flows results

Answer 13

destroys on impact
buries areas
forms lahars
burns surrounding areas

Question 14

What is a lava flow

Answer 14

slow moving molten rock

Question 15

Lava flows can result in

Answer 15

lahar or pyroclastic flows

destroys everything in path

Question 16

Effects of gases

Answer 16

fumaroles
acid rain and air pollution
increase ozone depletion
temperature changes

Question 17

What is a tephra

Answer 17

fragments of rock or lava or varying sizes ejected into the air by a volcanic explosion

Question 18

Impact of huricanes

Answer 18

coastal erosion
storm surges
flooding
strong winds
landslides
increased susceptibility to subsequent storms

Question 19

Impact of tornadoes

Answer 19

uproots buildings
destroy buildings
death and injury
move and destroy cars, trucks, and other objects

Question 20

Liquefaction can be a result of

Answer 20

earthquakes

Question 21

Liquefication

Answer 21

disruption of loose sediments by seismic waves resulting in formation of a slurry

Question 22

Impacts of wildfires

Answer 22

property damage 
change to landscapes
death and injury
erosion
water pollution
air pollution
trigger landslides

Question 23

Impact of floods

Answer 23

low rate of death and injury

high property damage

Question 24

Impact of landslides

Answer 24

damage and change to land
injury and death
damage to structures
triggered by storms, earthquakes, volcanoes, fores, and human activity