Albedo. 4/13 WHOT Teaching Point: Objective: Identify how the earth’s atmosphere regulates temperature Responsibilities: All 3 rd Quarter Work Turned

Albedo

4/13 WHOT Teaching Point:

Objective: Identify how the earth’s atmosphere regulates temperature

Responsibilities: All 3rd Quarter Work Turned in by Friday. GHG Effect Reading Q’s Due at end of

period.

***It will not show up on 3rd quarter’s report card but is the last chance to turn in.

(GHG)Greenhouse Gases – Gases in the atmosphere that trap heat in. (Think of a blanket) H2O, CO2, CH4, N2O

Atmosphere absorbs almost all non-visible light.

UV light is very high energy! (think sunburns)

Greenhouse Gas Reading

#1

Factors that influence the Greenhouse effect: Amount of sun that makes it to the surface. Amount of Greenhouse gases (CO2, H2O, CH4,

N2O) Amount of sunlight absorbed/reflected (albedo)

#3

Copy these 4 diagrams down in your notebook

1

43

2

Earths Atmospheric Gases

Nitrogen (N2) 78%

Oxygen (O2) 21% Argon (Ar) 1% Carbon Dioxide (CO2) 0.038%

Water Vapor (H20) 0-4%

Methane (CH4) trace

Sulfur dioxide (SO2) trace

Ozone (O3) trace Nitrogen oxides trace (NO, NO2, N2O)

https://www.youtube.com/watch?v=o9BqrSAHbTc

Why you should wear sunscreen.

How are Greenhouse Gases like blanket.

WHOT Q


• Objective: Model, analyze, and describe data for the greenhouse effect.

Responsibilities: Analysis Questions Due Tomorrow

***Extra Credit Due Friday!!!

Warm up - The experiment

If you leave the light on for 20 minutes and come back to measure the temperatures…

Would the temperature…A. Both increase the same.B. Air would increase more.C. CO2 would increase

more.WHY?

Air CO2

Describe the Data

1. Describe in detail the general trend in temperature over time that was observed. This includes the trend when the light is on as well as when it is off.

Tem

pera

ture

(F)

Time (minutes)

Describe the Data

1. Describe in detail the general trend in temperature over time that was observed. This includes the trend when the light is on as well as when it is off.

Struggling? Watch this demo

https://www.youtube.com/watch?v=kwtt51gvaJQ

WHOT Q

Greenhouse Gases


• Objective: Trace the different forms of carbon, and their pathways around the planet.

Responsibilities: Carbon Stations 1 or 2 completed.

(Extra Credit Due Friday!!!)

With your neighbor come up with at least 3 different forms of carbon.

So just where is carbon on the planet???

Warm up

Carbon on the move

Tape in a map and create headings as demo’d

You will add to this page as you go through each station.

Carbon on the moveWhere on Earth?

Forms of Carbon:CO2 – Carbon Dioxide

Carbon on the moveActivity __“This experiment demonstrates the process in nature where carbon moves from _____________ to ________________.”

Create a Carbon question based on your activity.

WHOT Q



Responsibilities: Carbon Stations 1 or 2 completed.


Carbon on the move

Tape in a map and create headings as demo’d

You will add to this page as you go through each station.

Carbon on the moveWhere on Earth?

Forms of Carbon:CO2 – Carbon Dioxide



WHOT Q



Responsibilities: Carbon Stations 1 - 3 completed.


EVERY activity will start with this phrase.


Before the lab…

New lab technique!!!

How to make a funnel!

Fold twice, open once corner.

You will use this to strain the potting soil

Key: NO POTTING SOIL DOWN THE DRAIN… Zero


WHOT Q

Activity 4

EVERY activity will start with this phrase.


The Arctic is warming at almost twice the rate of the rest of the world.

Difference in 2001-2005 average temperature distribution compared with the 1951-1980 mean temperature distribution.

Climate Change Impacts on Snow and Ice

1 2 3 4 5 6 7 8 9 10Number of Shakes

Artis Rams/iStockSnow influences climate because of its insulating properties and because it reflects sunlight.

Snow and ice in the Northern Hemisphere are melting, especially in the Arctic.

SNOW

Decreasing Snow Cover

Snow cover has declined in the Northern Hemisphere, especially in spring and summer. Mean monthly snow cover is decreasing by about 1.3% per decade.

Northern Hemisphere Spring Snow

Snow is also melting earlier in the spring, increasing the snow-free period in the Arctic regions.

This changes the average albedo. (decreasing)

This change may significantly alter the overall planetary albedo, causing even further warming (positive feedback effect).

Snow Outlook for the Future

Yellow to red is less snowBlue is increased snow

The snow line (minimum elevation for snow cover in the mountains) is projected to rise in many mountain areas.

Major reductions in snow cover are projected for mid-latitudes by the end of the this century (2100).

Webquest Check into SWIFT Under Pearson Documents W7 Albedo Webquest Pg 114-116 in Lab Notebooks

This material is based on work supported by an Environmental Literacy Grant from the National Oceanic and Atmospheric Administration’s Office of

Education (NA09SEC4690009) and prior work supported by the National Science Foundation under Grants ANT-0342484 and ESI-0632175. Any

opinions, findings, and conclusions or recommendations expressed in these materials are those of the authors and do not necessarily reflect the views of the National Oceanic and Atmospheric Administration or the National Science

Foundation.http://andrill.org/education/elf/activities

http://andrill.org/education/elf/activities

Land Surface Type

Avg. number of corn (energy)

Albedo Number Reflected

Number Absorbed

Deserts 15 .3 5 10

Ocean 55 .1 5.5 49.5

Ice and Snow

10 .8 8 2

1. What land surface types absorbed/reflefted the most incoming radiation

The Grassland (.20 albedo) absorbed the most radiation at 3.14% of total radiation compared to the desert (.30) which reflected 8.14% of radiation.

Use Data

So how does albedo affect climate?

Name something with a high albedo, Name something with a low albedo

Pg 114 in science journals

# of Shakes Graph

0 1 2 3 4 5 6 7 8 9 10

Number of Shakes