Transcript
Page 1: Unit 5 ch 12 s2  air, noise, and light pollution

AIR & AIR POLLUTIONChapter 12, Section 2: Air, Noise & Light Pollution

Standards: SEV3a

Page 3: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT ARE THE SHORT TERM EFFECTS OF AIR POLLUTION ON HEALTH?

Headache Nausea Irritation of eyes,

nose, throat Coughing Upper respiratory

infections- bronchitis, pneumonia

Worsen effects of asthma & emphysema

Page 5: Unit 5 ch 12 s2  air, noise, and light pollution

CASE STUDY: HEALTH EFFECTS OF GROUND LEVEL OZONE (AKA- BAD OZONE)

Good ozone is in the stratosphere over Earth’s atmosphere & protects us from UV rays

Ground Level (bad) Ozone = VOC’s + NOx + sunlight

Mostly from cars, gas vapors & power plants

Short term effects: irritation of respiratory system, increased asthma

Long term effects: reduced lung function (especially kids who live in urban areas and are outside often)

Page 6: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT ARE SOME TYPES OF INDOOR AIR POLLUTION?

Sometimes indoor worse than outdoor because more concentrated & more exposure.

Tobacco smoke Tetrachloroethylene- dry cleaning

fluid Paradichlorobenzene- moth balls

& air freshener Bleach, NaOH- cleaners NOx- unvented gas stoves, wood

stoves Fungi & bacteria- dirty air

conditioning ducts CO- faulty furnace, cars left

running Formaldehyde- furniture, carpet,

particle board Radon- radioactive soil under

foundation

Page 7: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT IS RADON? Odorless,colorless Radioactive When home is built, radon

can be “uprooted” If basement or floors develop

cracks, radon can seep in If you live in this

environment for many years can develop lung cancer.

2nd leading cause of lung cancer in US

How do you fix it? Establish ventilation system in

basement to release radon so it doesn’t build up in house

Page 9: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT IS SICK BUILDING SYNDROME? Common in well air

conditioned buildings that are closed tight to keep in cool air.

Cause headaches, nausea that are alleviated by going outside

Martin county, Florida- $11 million courthouse closed down due to mold created by air conditioning system with no ventilation. LA Times- Florida's Plagu

e: Sick Building Syndrome

Page 10: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT IS NOISE POLLUTION? Unwanted sounds Irritating to ears & damages

cells in ears Hearing loss has doubled in US

in last 30 yrs 12% teens have permanent

hearing loss Measured in decibels (dB)

See table 120 dB is threshold of pain Europe MP3 players cannot

produce more than 100 dB of noise

National Institute of Health sets safe threshold at 85dB for 8 hours

US does not regulate personal listening devices.

Page 11: Unit 5 ch 12 s2  air, noise, and light pollution

WHAT IS LIGHT POLLUTION?

Does not present direct danger to human health.

Problems with light pollution: Aesthetic reasons-

can’t see stars at night Wasted energy when

shines upward Shield light so it is

focused downward Use timer controls Use low pressure

sodium light sources to save energy

Page 12: Unit 5 ch 12 s2  air, noise, and light pollution

YOU SHOULD BE ABLE TO…

Describe the long term and short term effects of air pollution on health.

Describe two ways in which indoor air pollution can be prevented

Describe some of the human health problems caused by noise pollution

Describe several solutions to the energy waste associated with light pollution.


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