Week of March 20 Global and Local Winds

W.O.R.M. in Class on Monday March 27
                  Chapter 2 Test on WINDS  Wednesday March 29
                       Earth’s Atmosphere Unit Exam    Thursday April 6

Below is a lesson on GLOBAL WINDS, presented by a friend who is also a science teacher, Mr. Sean Mussleman.

Here is one of the Venn Word Banks we are doing in class this week. use this as a study guide – know the meanings and explanations of all the terms!


  •  Describe the relationship between Heat, Pressure and Wind

  • How does this relationship affect the formation of winds?  You can describe either local winds or global winds.

 

Be complete in your descriptions and your naming of the winds.

Summary:

The Sun heats and cools the land faster than water.  We call this  UNEQUAL HEATING.

This UNEQUAL HEATING causes  differences in pressure.

Differences in pressure cause winds to blow because AIR moves from HIGH PRESSURE to LOW PRESSURE.

Extra Credit – Develop an experiment to do this, and report on your findings. Use science facts and ideas to explain what you did.

Extra Credit - Develop an experiment to do this, and report on your findings. Use science facts and ideas to explain what you did.

Wind

Fun Facts about Wind:  Click Here

We have been studying the effects of unequal heating of the Earth’s surface, and the resulting wind patterns these cause.  Land that is heated more directly absorbs more of the sun’s heat through radiation.  The ground touches the air, and through conduction, heats the air – the air becomes less dense which causes it to rise.  This creates an area of lower pressure in the atmosphere.  As the air rises, it cools, becomes more dense, and then falls back to the earth, creating an area of higher pressure.  The movement of the air creates a convection current.

AIR ALWAYS MOVES FROM AREAS OF HIGH PRESSURE TO AREAS OF LOW PRESSURE.

Moving air is called WIND.

Global Winds

The spinning of the Earth causes the winds to bend to the right as they move across the globe.  We call this effect the Coriolis EffectGlobal Winds are winds that move across large areas around the globe. There are three major Global Wind Belts – the Trade Winds, the Westerlies and the Easterlies.  These wind belts are found in both the Northern and the Southern Hemispheres.  There are also areas of calm winds, called the doldrums near the equator, and the Horse Latitudes nearthe 30 degrees latitudes.  See the diagrams below.

Global Wind Belts

Global Winds Diagram

Local Winds

The same convection currents that cause the Global Winds also affect the atmosphere at the local level, especially at the seacoast.  Here on Cape Cod we experience these local winds during the summer.  Cape Cod is kept cool, sort of a natural air-conditioning, by the local sea and land breezes.  The hot summer sun heats the land on Cape, causing the air to rise (low pressure). Cooler descending air from the water (higher pressure) rushes in to take the place of the rising warm air on land, forming a cooling Sea Breeze.  This keeps the Cape comfortable on most summer days.  At night, the land cools down much faster, the warmer ocean water heats the air, causing the air over the water to rise. Cooler air from the land moves in to take the place of the rising are, creating a Land Breeze.

Study the diagram below, and then CLICK on it to see the animation!.

SmartBoard Land and Sea Breezes

Both Global Winds and Local Winds are caused by the unequal heating of the Earth’s surface, creating differences in air temperatures and air pressures.

Air (wind) always moves from HIGH pressure to LOW pressure.

 This Wind’s About to Blow!

Week of March 1 The Electromagnetic Spectrum

This Week’s Lesson

Electromagnetic Spectrum PowerPoint

Class Discussion

The Electromagnetic Spectrum is the entire range of wavelengths that are found in the solar radiation that reaches the earth from the sun.  It consists of many different sizes of waves (wavelengths) that represent different energy levels in the waves.  There are three basic kinds of electromagnetic waves:

Infrared WavesLonger than the red wavelengths

– low energy

Visible Lightthe waves of radiation that we can see

R O Y G B I V

Ultraviolet RadiationShorter than violet wavelengths

– high energy

spectrum

Week of February 27 Layers of the Atmosphere

…and another music video “Drops of Atmosphere”

We are studying the Layers of the Atmosphere as we start our new unit.  In our graphing lab activity we learned that the temperature of the air definitely changes as we go higher in altitude…but it does not always go down, as you may think!  Each of the layers of the atmosphere is defined by a Change in the Temperature Direction.  The chart below shows the changes as we graphed them in class.

Layers of the Atmosphere

  Remember your Silly Sentence to recall the layers in order:

T S M T I E

or

The Sun Melts The Ice Everyday!

The Aurora Borealis, also know as the Northern Lights, are caused by the sun’s high energy radiation ‘charging’ the air molecules in the Ionosphere, causing them to glow.  This happens near the North and South Poles, as the Electromagnetic Field is less strong at these points.

earth-magfield

The Northern Lights are one of nature’s most spectacular visual sights, and in this speeded-up video from National Geographic Videos, they provide a breathtaking display of light, shape, and color over the course of a single night in Norway.

And finally, for some fun, here is the link to the Classroom JigSaw Puzzle we did today…

Atmospheric Layers Jigsaw Puzzle

 

 

Week of February 13 Heat Transfer in the Atmosphere

SPECIAL Video Links to Bill Nye the Science Guy

Bill Nye The Science Guy:  On The Atmosphere

Bill Nye The Science Guy: On Heat

We have been studying the ways that heat can be moved form one substance to another…through the three types of Heat Transfer Radiation, Convection and Conduction.  For an animation review of what we did in class,  click on the picture.

Heat Transfer Animations

In the diagram below you can see how each of these types of heat transfer is represented in the picture of the boiling water.  Radiation from the campfire travels through open space to heat the pot.  The pot then conducts the heat through direct contact (touch) to heat the entire pot and handle, as well as the water inside the pot. As the water, a fluid, gains heat energy, the molecules of water become more agitated and move more quickly, becoming less dense.  The warmer water then rises to the top of the pot, where it hits the air, cools, and then contracts to become more dense.  It then sinks to the bottom of the pan, where it is heated once again.  This forms a convection current in the pan.


ccr

In the atmosphere, the same three types of Heat Transfer take place…Radiation from the sun heats the ground.  The ground then touches the air, and through this direct contact, conduction, the air is then heated.  As the warm air becomes less dense and molecules move farther apart, the warm air rises through convection. When it reaches the upper levels, the warmer air cools, contracts, becomes denser, and then sinks back to earth.  It then gets heated by the ground one more time, and the repeated actions form convection currents.

radiationconduction

Like Jigsaws?  Check this out….click on pic below!

preview35 pieceHeat Transfer in the Atmosphere

Week of February 6 Introducing Earth’s Atmosphere

Earths Atmosphere

nasa_sunset_main1

 

In the darkest regions of deep space, the temperature is a chilly -450° Fahrenheit. Closer to our Sun, temperatures reach thousands of degrees Fahrenheit. What makes Earth’s climate so moderate? Separating Earth from the extreme and inhospitable climate of space is a 500-mile-thick cocoon of gases called the atmosphere.

All planets have an atmosphere, a layer of gases that surrounds them. The Sun’s atmosphere is made up of hydrogen, while Earth’s is made up primarily of nitrogen and oxygen. Carbon dioxide, ozone, and other gases are also present. These gases keep our planet warm and protect us from the direct effects of the Sun’s radiation. Without this regulation, Earth could not sustain life.

Today we will start to learn WHY the earth’s atmosphere is so important to life.  We will also discuss the major gases in the atmosphere and learn why each of them is so important.

From here we will then do an online activity called Atmosphere Virtual Lab! You can find this on Google Classroom.

And when you have finished the Atmosphere Virtual Lab  Assignment,

enjoy this music video!

Mr. Parr – AIR!!

 

Week of January 30 “Supervolcano”, and then Earth’s Atmosphere

This week we will be watching the movie SUPERVOLCANO as a final salute to geology!  It’s a great story about the eruption of the massive volcano underneath Yellowstone National Park.  With all you have learned in your geology unit and our park projects,  you should really enjoy the movie.  Click on the title above to see the movie at home on YouTube.

 Ckick HERE to go to the Yellowstone Volcano Observatory Website

 And then later in the week, we begin to explore

Earth’s Atmosphere!

EARTH'S ATMOSPHERE

Our next textbook!

EARTH'S ATMOSPHERE text


Week of January 9-13 – Weathering and Erosion & The Rock Cycle

Announcement:

 National Park Projects Due Tuesday  Jan 17

Interactive Rock Cycle Assignment Due Monday Jan 23

Geology Unit Exam – Thursday Jan 26

AFTER SCHOOL REVIEW:  Tuesday Jan 24

Study Guide in Classroom Notes Link —>

 

 Remember for the Projects –

You Are Telling a Story, Not Just the Facts! 

Show What You Know!

 FOR YOUR PARK PROJECTS

In class we will watch the following video on Weathering and Erosion, with a Worksheet.

NATIONAL GEOGRAPHIC:  AMAZING PLANET – DESTRUCTIVE FORCES

Weathering and erosion shape the world that is around us. Watch and listen as Zoe and RJ from the StudyJams Crew explain the science behind weathering and erosion.

Now go to the link Weathering and Erosion to complete the handout given in class…

Weathering and Erosion

If you complete this, check out

The Rock Cycle

Processes at Earth’s surface and heat within Earth cause rocks to change into other types of rocks.
Rock Cycle Diagram II

All rock started as magma. The rock cycle started with the cooling of the earth’s magma billions of years ago.  But after that, it has no end. Rather, it is an ongoing cycle in which rock — driven by tectonic processes such as volcanoes and earthquakes, the surface processes of weathering and erosion, and compaction — is created and destroyed.

For this assignment, you will go to the following web site:

Interactives – The Rock Cycle

Interactives Rock Cycle

Directions for the Assignment:

  • Open the Interactives Rock Cycle in a different window.

This interactive web site will help you to review the types of rocks and the processes that occur within the rock cycle.  Instructions given on the web site will lead you through the different sections of material.

The tutorial will review the three rock families and provide you with a list of key characteristics that can be used to place samples within the three rock families.

In this part of the tutorial, when you click on the rock sample, you will be provided with the name of the rock as well as information on how the rock forms and where it can be found.  Make sure to add the rocks to your collection.

  • The next section, “Identify Rock Types”, will allow you to test your ability to recognize rock characteristics and types.  Note: this section is timed (six minutes…more than enough time to complete the activity).
  • When you have completed this self-test, go on to the next section, which describes How Rocks Change.  Be sure to view the animation sequences provided for each rock family!
  • At the end of this section, complete the self-test Transform the Rock to see if you can identify the processes that can change rocks from type to another.

This self-test is timed (six minutes); to complete the sequence, click and drag your answer into the appropriate box.

  • The next section describes the rock cycle and also includes a self-test Complete the Rock Cycle to see if you can name the different parts of the rock cycle.
  • The final activity at the web site is a Test Your Skills assessment to see how much you have learned.

Enter your first and last name in the space provided.  When you have completed the assessment, print out your results. Make sure that you print out the complete results.  Do not just print your score.  You must show your teacher the printout with all of the graded questions to get credit.

This will then become your Study Sheet!

Alternate Assignment:    Rocky’s Journey

Rock Cycle Alternate Assignment

You are now a well-educated geologic student of The Rock Cycle!

Fun Activity:  Rock Cycle Study Jams

Rock Cycle Study Jams Picture

Week of January 3 Mountain Building and Volcanoes

The Formation of a Volcano

(Not necessary to know all the technical terms – just our vocabulary:  pyroclastic flow, geysers and acid rain)

Mountains and Mountain Building

Check out these games:

Structure of a Volcano

Identify and Label the Mountains

Natural Disasters

This week we are studying the three processes of Mountain Building. Mountain building is a very slow process that can take many thousands and even millions of years. Over this time many earthquakes will occur, slowing changing the shape of the land to create a mountain in one of three ways:

  • Folding, creating Folded Mountains

  • Faulting, creating Fault-Block Mountains

  • Volcanic Activity – creating a volcano or a dome mountain

Folded mountains are caused by compression stresses and reverse faults, causing a slow uplift of earth’s crust and rocks. These usually occur along plate boundaries where two plates are converging. The process is similar to pushing a carpet lying on a floor up against a wall to form.  The Himalayas in Asia, the Alps in Europe, the Andes  in South America and the Appalachian Mountains of the US  are good examples of Folded Mountains. Interesting national parks would be the Rocky Mountain National Park in Colorado and the Great Smoky Mountains National Park in Tennessee/North Carolina.

Folding of a Mountain
Folding of a Mountain
Fault-block mountains are created where the crust may be stretched apart by tension stresses.  Cracks in the Earth’s surface are formed by normal faults, which can result in the  formation of fault-block mountains.  If there are two parallel faults, the crustal block between them may either rise to form a fault-block mountain or fall to produce a rift valley. Examples are the Grand Teton National Park in Wyoming and the Great Rift Valley in Africa.
mountian_building
Fault-Block Mountain Building
Volcanic Activity -These mountains form when plate activity allow magma to rise up through the earth’s crust and erupt on the surface. This can create a mountain of lava (magma outside the crust) and ash that can form very tall mountain peaks called volcanoes. The mountain peaks of the Pacific Northwest, such as in Mount Rainier National Park and in North Cascades National Park, as well as  Kenai Fjords National Park in Alaska,  are examples of volcanic mountains.
volcano
Volcano Building
Sometimes the magma in the crust simply pushes an area of the crust up into a dome shape. The crust doesn’t snap and break, but rather it swells upward as a bump on the crust’s surface. This is called a Dome Mountain. Examples of these  would be  Yosemite National Park in California and the Adirondacks of New York.
dome
Dome Building
Mountains Summary Chart

Week of December 5 thru Dec 21 Earthquakes and Seismic Waves

CHAPTER TWO TEST – EARTHQUAKES

Monday Dec. 19

Make Your Index Card

HOW A SEISMOGRAPH WORKS

Click on the picture below to see an animation of how a seismograph works.

What shakes, and what doesn’t?

How a Seismograph Works

Click on the picture below to see

HOW TO FIND THE EPICENTER of an EARTHQUAKE

Chapter 2 Seismograph Animation Picture

THIS WEEK’S LESSON

 Movement of body waves away from the focus of the earthquake. The epicenter is the location on the surface directly above the earthquake's focus.

Earthquakes are a form of wave energy that is transferred through the crust. Motion is transmitted from the point of sudden energy release, the focus, as seismic waves that travel in all directions outward. The point on the Earth’s surface directly above the focus is termed the epicenter.

 

                                                                            SEISMIC WAVES AND THE SLINKY

The Slinky P-Wave and the S-Wave

 

P-waves or primary waves are formed by the alternating compression and expansion of the crust. They are the first to arrive at a seismograph station, and travel in a straight line. Think of the slinky we did in class! P-waves also have the ability to travel through solid, liquid, and gaseous materials.

 

Model of the Primary Wave

S-waves or secondary waves are formed by the side-to-side movement of the crust. They are the second to arrive at a seismograph station, and travel more slowly. Think again of the side-to-side slinky we did in class, or look at the example below.

s wave

  • S-waves have the ability to travel through solids, but stop at liquid and gaseous materials.
  1. What does that mean as the waves travel through the earth’s layers?
  2. What happens at the Outer Core?
  3. What does this help geologists to know about the Outer Core?

 

 

Surface waves are something like the waves in a body of water — they move the surface of the earth up and down. This generally causes the worst damage because the wave motion rocks the foundations of manmade structures. Surface waves are the slowest moving of all waves, so the most intense shaking usually comes at the end of an earthquake.