Transcript Human impact on Earth

FRIDAY: BELLWORK
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IFC
BELLWORK: TUESDAY
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T/F
Energy from the sun can be used to make
electricity
All of earths resources will last forever
Food, cloth, rope, lumber, paper and rubber all
come from plants
Human activity can negatively affect earths
resources
TUESDAY:
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EQ: How do humans impact earth’s natural
resources.
Think central digital lesson: Unit 4, lesson 1
WEDNESDAY - BELLWORK
IFC:
Is water a renewable or nonrenewable resource? EXPLAIN
List some reasons why you need water.
HUMAN IMPACT ON EARTH
How do humans impact water
resources
EQ:
OBJ:
I can identify sources and types of
water pollution
WHY IS WATER IMPORTANT?
Water shapes earth’s surface
 Affects weather and climate
 Vital for life: Every living thing is made up of
water and life processes use water.
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WHERE DO WE GET FRESH WATER?
WHERE DO WE GET FRESH WATER
WHERE DO WE GET FRESH WATER
Surface Water – water above
ground
 Snow, ice, rivers, streams, lakes
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Ground Water – water in spaces
below earth’s surface
 In aquifers – a body of rock or
sediment that can store a lot of
water – allows it to flow
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WHAT ARE WATER QUALITY AND SUPPLY
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Water quality – measures how clean or polluted
water is
Water supply – measures the availability of
water.
influences where farmers grow crops
influences where cities are built
Potable water – drinkable water
WHAT THREATENS FRESH WATER QUALITY
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Water pollution – when waste
or other material is added to
water so that it is harmful to
organisms that drink it or live in
it.
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Point source – comes from one
specific source
Ex: chem. Spill, factory waste
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Non-point source – comes from
many small sources, more difficult
to identify.
Ex city street run off, fertilizer
run off, mines
IDENTIFY AS POINT SOURCE OR NON POINT
SOURCE
WHAT ARE SOME TYPES OF WATER
POLLUTION?
Thermal pollution
 Chemical pollution
 Biological pollution
 Eutorphication
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THERMAL POLLUTION
Heating of water sources
 Ex power plants release warm water that has
been used to cool equipment
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CHEMICAL POLLUTION
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http://www.tourdeturtles.org/flash/WaterQuality.
swf
When harmful chemicals are added to water
supplies
 Ex – pesticides, fertilizers, acid rain, chem.
Waste from factories
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BIOLOGICAL POLLUTION
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Live or dead organisms are added to water
supplies.
Waste water – used in homes contains bacteria
and other microbes
EUTROPHICATION
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Increased nutrient levels in water from fertilizer
run off cause fast growth of algae
Kills fish
EXIT: IDENTIFY THE TYPE OF WATER
POLLUTION.
HOW IS WATER TREATED?
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Screens take out large debris
Chemicals clump smaller particles together
The clumps drop out of the water which
removes harmful microbes
Air is bubbled through the water to make it
potable.
BELLWORK
T/F
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Urban areas have more open areas than rural areas
do
Many building materials are made from land
resources
Soil provides a habitat for plants but not animals
Soil can erode when trees are removed from areas
All of earths resources will last forever
Food, cloth, rope, lumber, and paper come from
plants
Human activity can negatively affect earths
resources
EQ: WHAT EFFECT DO HUMANS HAVE ON
LAND?
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Obj. I can describe human impacts on land
because I can list types of land use and identify
types of land degradation
WHY IS LAND IMPORTANT?
Provides:
 Supplies solid surface for buildings and roads
 Nutrients for plants
 Habitat for animals
 ProvidesFossil fuels and minerals
WHAT ARE DIFFERENT TYPES OF LAND USE?
1. RECREATIONAL
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Natural areas that humans have left alone
(wild places)
Ex. Hiking, mt. climbing
2. TRANSPORTATION
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Roads and train tracks connect urban and rural
areas
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AGRICULTURAL
Farming – crops and livestock
4. RESIDENTIAL – WHERE PEOPLE LIVE
 Rural
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areas
Low density population
Areas of open land
 Urban
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areas
Densely populated
Small amount of natural land
Urbanization – growth of urban areas caused
by people moving into urban areas
 Land is replaced by buildings and parking lots
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5. COMMERCIAL AND INDUSTRIAL
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More business and factories replace land and use
land resources (trees, soil, minerals)
List 2 types of commercial or industrial land use
that you can see around the school.
WHAT ARE DIFFERENT TYPES OF LAND USE
Pair Share:
Imagine you live here.
Choose any of the land uses
shown and describe why it
might be important to you
LABEL THE TYPES OF LAND USE SEEN IN THE
PICTURE BELOW (ASSUME THE RESTAURANT SELLS THE
COCONUTS FROM THE TREES AND THERE IS A ROAD BETWEEN
THE HOTEL AND THE CONDOS THAT LEADS TO THE BEACH
)
HOW DO HUMAN ACTIVITIES AFFECT
LAND AND SOIL?:
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Land Degradation - process by which human
activities and natural process damage land so it
cannot support an ecosystem
LAND DEGRADATION:
URBAN SPRAWL
When cities spread out
 Shopping centers, roadsand housing replace land
 Less soil = more runoff from the parking lots
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LAND DEGRADATION:
EROSION
Wind, water, gravity transport soil and
sediments.
 , fewer trees = more erosion and land degradation
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LAND DEGRADATION:
NUTRIENT DEPLETION AND POLLUTION
As farmers plant the same crops in the same
place, the nutrients are depleted
 Industrial pollution and chemical wastes – kill
organisms in the soil
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LAND DEGRADATION:
DESERTIFICATION
https://www.youtube.com/watch?v=w9RxnuBiFbg
As you watch: what is desertification
What causes desertification
 Over time, the land becomes desertlike and unable to
support life
 Caused by overgrazing, logging, and soil erosion
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LAND DEGRADATION:
DEFORESTATION
Removal of trees and other vegetation
 https://www.youtube.com/watch?v=M4jhjt1_eyM
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Caused by logging, mining, urbanization, and
farming.
HTTPS://WWW.YOUTUBE.COM/WATCH?V=M4JHJ
T1_EYM
DEFORESTATION VIDEO CLIP
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Listen for 3 causes of deforestion
Listen for 2 environmental effects of
deforestation
EXIT:
DESCRIBE THE TYPE OF LAND USE:
BELLWORK
1. Name 4 uses of Land
2. The bar graph below compares the
populations of four places—A, B, C, and
D. Each area is the same size.
 · Which bar most likely shows an
urban area? Why?
 · Which bar probably shows a rural
area? Why?
 · Which bar most likely shows a
natural area? Why?
3. What is land degradation? Name 5
types
BELLWORK
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What is deforestation?
What is desertification
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What are nitrates?
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Nitrates are used in
What kind of water
pollution is this?
What happened to the
Nitrate level from 1993 to
2003?
During which 2 years did the nitrate level increase the
most?
 What kinds of human activity could have increased
the nitrate levels in the water
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BELLWORK:
1.
Get out a new piece of notebook paper. You will be
taking your own Cornell notes today.
2.
Copy the title of the section on the top: Human
impact on the Atmosphere
3.
Below it write the EQ: How do humans impact
the atmosphere?
4.
Below that, write the objective: I can describe
human impact on the atmosphere because I can
list and describe types of air pollution
5.
Make a column in the far left margin for the
questions you will answer as you read the text.
ATOMOSPHERE NOTES:
Human impact On The atomosphere: Answer the following
questions in Cornell Notes form on another piece of
paper:
Be sure to write the question.
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Why is the atmosphere important (3 reasons)
Define Greenhouse Effect
What is Air pollution (give 2 examples)
What pollutants form from Vehicle exhaust (name 2)
What is smog
What is acid precipitation
What are the effects of acid precipitation
What is air quality and how is it measured (2 ways)
How does air pollution impact health (copy chart of shortterm and long term effects)
HOW DO HUMAN ACTIVITIES
ATOMOSPHERE?
IMPACT THE
WHY IS AIR IMPORTANT?
Provides gases we need to survive
 Absorbs radiation
 Keeps earth warm
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Green house effect – gases in the atmosphere
absorb and give off thermal energy
WHAT IS AIR POLLUTION
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The contamination of the atmosphere by human and
natural sources
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Natural = volcanos, fires, dust storms
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Human = burning fossil fuels, manufacturing
WHAT ARE TYPES OF AIR POLLUTION
1. gases – carbon dioxide, sulfer, nitrogen oxide
 2.Particulates – solid suspended in air or water
(smoke, ash)
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4. POLLUTANTS COME FROM CARS
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Ground level ozone – from sunlight reacting with
vehicle exhaust
Smog – when ground level ozone and vehicle
exhaust react with sunlight
5. ACID RAIN
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Rain, sleet or snow that contains acids from air
pollution
Form when atmospheric acid reacts and forms
sulfuric and nitric acid
Causes change in soil and water acidity and
affects plant and animal habitats
WHAT ARE MEASURES OF AIR POLLUTION
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Air quality – how clean or polluted teh air is
Air quality index(AQI) – number telling the quality in
a city – higher number = more health hazards
HOW DOES AIR QUALITY AFFECT HEALTH
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Short term – coughing, headaches, and wheezing.
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Long term – lung cancer, emphysema
HOW DO WE PROTECT EARTHS RESOURCES
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Conservation – the wise use of natural resources
How do we protect the Land:
 Preservation – protecting land from being changed
 Reforestation – planting new trees
 Reclamation – fix damaged land areas
 Reduce Urban sprawl (vertical development in the
city)
 Recycle – recover valuable materials from waste or
scrap
 Soil Conservation – crop rotation
HOW DO WE PRESERVE WATER RESOURCES
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Conservation – use less water
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Ex. Shorter showers, low flow toilets, better
irrigation systems
HOW DO WE REDUCE AIR POLLUTION
Energy conservation
 Technology – alternative energy sources
 Laws – limiting amount of toxic chemicals that can be
released
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BELLWORK:
At the bottom of yesterday’s notes write:
How does population impact the environment?
- define population – (look up definition on p. 524
of green book)
- define carrying capacity –
- Draw and label the line graph showing
population growth and carrying capacity (figure 3
on p. 525)
LORAX – HUMAN IMPACT ON THE ENVIRONMENT
As you watch the video, look for examples of:
 Populations
 Deforestation
 Desertification
 point and non point source pollution
 Water quality
 urban sprawl
 Particulates
 chemical pollution
 air quality
 smog
 Particulates
 carrying capacity