Spring Break 2013 assignment

http://www.nysedregents.org/earthscience/612/esci62012-exam_w.pdf

besides answering each questions from June 2012 Regent,on a separate sheet of paper

 you will need to draw an explanation of how you derive the correct answer to your assigned question.

for Extra Credit try http://www.nysedregents.org/earthscience/113/esci12013-exam.pdf  too.

see http://earthscience-portal.blogspot.com/2013/04/spring-break-assignment.html#!/2013/04/spring-break-assignment.html for your #

Lab#11: Relative humidity lab

watch before lab

this marking period's extra credit..... all the Jan Regents from 2006 -2012

http://earthscience-portal.blogspot.com

you need to include all the correction of the ones you got wrong to get credit.

Homework 6B: 

read pg 170-172, 182,-184

Do pg 178-179 # 3,5,6,8,9

Do Pg 188#1,2,7,8,9 to 12

Do Pg 190 #15 use graph paper

Spring Break assignment: 

June 2012 Regent 

(draw out the answer to your assigned question questions)

Period 7 (#1-27)

Period 1( # 31 to 65)

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This week's Lab:  You will need you ESRT Pg 12-13 

2011 ESRT

1.   Compare the air temperature and relative humidity of your classroom, hallway (or other room), and outdoors. Are they all the same? Discuss reason(s) in detail.

2.   On the weather station models, provided record and label the available air temperature values for classroom, hallway/other classroom, outdoors and weather station as it appear in the Reference Tables.

3.   How is evaporation a cooling process? Explain your answer. Give real life examples.

4.      Do you feel colder when you are wet or dry?  Explain.

5.     If the wet-bulb and dry-bulb temperatures were equal after using a sling Psychrometer, what would this mean about the condition of the air? Explain.

6.      Assume that you have a container filled with water at room temperature. If you wet your hand with this water, the wet hand will feel colder than the dry one (in the air) even though they both have the same temperatures, Explain why this is possible.

7.      How does a fan help you keep cooler on a hot summer day? Explain.
 

8.      How are temperature and water vapor holding capacity of the air, in general, related?

9. Assume that the amount of water vapor in the air stays the same. What would happen to the relative humidity if the air temperature increases?

10.Assume that the amount of water vapor in the air stays the same. What would happen to the relative humidity if the air temperature decreases?

11.      Why do we need to use humidifiers in wintertime to prevent dry skin, bleeding nose, chipping lips?

12.      Why do we need to use dehumidifiers, especially in the basements, in summertime to remove excessive moisture from the air to prevent growth and smell of mildew/mould, paint blistering, paint chipping and other problems?

Phases of water.....

1. Define matter in a complete sentence.
   
2. Describe the shape and volume characteristics for these state of matter.

   Phase	Shape	Volume
   Solid
   Liquid
   Gas

   
   
3. List three physical properties of matter.
   

   ---

4. Name one chemical property of matter.
   

   ---

5. Tell whether the following are chemical or physical changes:
6. sprinkling sugar on your cereal _______________
7. cutting a piece of paper _______________
8. burning a piece of paper _______________
9. soaking paper in alcohol until it's mushy _______________
10. scrubbing rust off a piece of steel _______________
11. Complete this phase change concept map. Include the phases of matter and the names of the phase change processes.
    
12. Complete this phase change diagram. Write in the names of the phases and the phase change processes (the small arrows). The little dots represent atoms or molecules of the substance.
    
    
    
13. To melt 2 grams of substance X requires 400 Joules (metric energy units). When liquid substance X freezes how much energy is released?
    

    ---

    
    

This diagram shows an experiment with equal amounts of two different substances in identical beakers and hot plates. Both hot plates are turned to the same setting.

• Substance X has a latent heat of fusion of 400 Joules/gram.
  
• Substance Y has a latent heat of fusion of 200 Joules/gram.

Which substance will be completely melted first?__________

1. If substance Y takes 20 minutes to melt, how long will substance X take to melt? ___________

PPT – "Dew Point and Relative Humidity PowerPoint presentation | free to view

PPT – "Dew Point and Relative Humidity PowerPoint presentation | free to view

Weather and Humidity

Here's what happens in winter to make it feel so dry in our houses. Let's say that the outdoor temperature is 0 degrees C, or 32 degrees F. The maximum amount of water that a cubic meter of air can hold at this temperature is 5 grams. Now you bring this cubic meter of air inside and heat it to 25 degrees C or 77 degrees F. The relative humidity is only 23 percent:

5 grams of water in the air / 22 grams possible
= 23 percent relative humidity

It gets worse as the temperature outside falls lower. This is why the air inside any heated building in the winter feels so dry. Any time the temperature outside is below freezing, relative humidity inside will be below 20 percent unless you do something to increase the humidity.

The outside air might have a comfortable level of humidity, but when that air is heated, the relative humidity drops, causing the air to be very dry inside the house.

During the dry months, a humidifier can help maintain a comfortable level of humidity.

As the winter air enters, the humidity drops slightly within the crawlspace.  Notice relative humidity is 62%, beyond what the EPA considers acceptable.  As the air migrates upward, it warms greatly and relative humidity drops drastically.  The house feels dry, but the crawlspace still requires dehumidification.  To control dust mite populations, it is recommended that the crawlspace be kept at 40% R.H. all year long.  Unfortunately, most dehumidifiers will not work at a 45° temperature.  Though, our Dri-CrawlSpace^® dehumidifiers will run just fine all the way down to 33°.

Still winter time, but here we have a cold rainy day.  It will still feel dry indoors, but notice as the outside air enters the crawlspace, relative humidity only drops to 70%.  During this type of weather, your crawlspace dehumidifier should be running.  Be sure to choose a Dri-CrawlSpace^® Dehumidifier because it is one of the few that can operate in temperatures this low.

This is the type of weather where mold really thrives, especially if it were to rain.  It’s too cold to run the air conditioner, so high humidity goes unchecked.  If it were raining, relative humidity outside would be 100%.  This would raise the dew point to 55°.  With the crawlspace at 58°, humidity would rise to a whopping 89%.  All your cold water pipes and exterior walls would be dripping wet.

Here’s a nice warm day with comfortable 50% humidity. But because it is so warm, dew point is also going to be warm.  Any surfaces below 60° will form condensation.  Look how high the relative humidity gets as the air cools to 65° in the crawlspace.  At 83% relative humidity, your crawlspace is sure to grow a good amount of mold, as well as make a fine home for spiders, termites, cockroaches and other pests.

The mild summer night is the worse case scenario for allergies. As temperatures near the dew point, dust mites and mold will multiply and run rampid throughout your home.  Notice how quickly food goes bad in this weather.  Also, if you notice more bugs in your home,  these are indications of high humidity.  A good crawlspace dehumidifer like the Dri-CrawlSpace^® can keep up with these humid conditions and make your home comfortable while taking some strain off your air conditioner.

want a textbook? see me for more info....

About the Exploring Earth Project    http://www.classzone.com/books/earth_science/terc/navigation/home.cfm

The investigations and visualizations on this site were designed to accompany Earth Science, a high school textbook authored by Spaulding and Namowitz and published by McDougal Littell. The Web site was developed by TERC, a non-profit educational research and development firm in collaboration with McDougal Littell. Funding was provided by the National Science Foundation. Visualizations and investigations on the site were designed to build students' knowledge of Earth Science concepts described in the textbook, and to raise student awareness of Earth as a system of interconnected components and processes. http://www.nwcsd.k12.ny.us/Page/784

Lab#10: Hurricane Tracking

Pre-lab: Read pg 205 -217 and summarize in a 1-pg essay

Hurricanes powerpoint from Smithtown High School West

watch an animation of the Hurricane
http://www.classzone.com/books/earth_science/terc/content/visualizations/es2008/es2008page01.cfm?chapter_no=visualization

After you plot the 3 hurricanes..... use it to answer the following questions.

1. Describe the general directions of the hurricanes you plotted. Be specific.

2. Mark the 30 N Latitude line on your map with a thick line. State the general direction that Hurricane Andrew and Hurricane Katrina moved below this line. What direction did the storms move above this line?

3. Use your ESRT and the name the prevailing winds which are responsible for west-northwest movement of hurricanes Andrew and Katrina before they reached about 30 N latitiude.

4.Name the prevailing winds which are responsible for north-northeast movement of hurricanes Andrew and Katrina after they reached about 30 N latitude.

5. What causes hurricanes to move in a particular direction?

6. Cuba is about 1,140km across. Create a scale for your map (1cm equals to). show your work.

7. Determine the average speed (km/day) hurricane Sandy to the nearest tenth between
    data points 1 and 15. Show your work with correct formula, units and rounding.

8. Where were these three storms located when they had their strongest winds?

9. What happens to the wind speeds and intensity of the storm as they move over cool water or land?

10. Based on what you already know about seasons and hurricanes, make an inference about why the hurricane season extends from June to November (Most Hurricanes form in the month of July, August and September.)

11. As Hurricane Sandy approached the lanad, cloudiness, wind and precipitation increased dramatically. State how the air pressure around the landfall area was changing at this time.

12. hurricane Sandy had the landfall when there was a full moon and high tide. State how the moon and high tide affected the storm's surge.

13.Make a list of Hazards associated with tropical storms such as hurricanes.

14. Increased urbanization along the coastlines pose a major threat  during tropical storms. What steps would you take to minimize or eliminate wide scale property destruction and causalties along the coastlines?
(needs ideas? goto http://www.ready.gov/hurricanes)

15. List the preparation you would make if a hurricane was approaching your town.

********************   The one below is another example of a Major Hurricane.... her name is Donna

Hurricanes and Tornadoes from jmu101211