Keywords: Physical Geography (726)

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1492: Using Data to Explain a Journey

1492: Using Data to Explain a Journey

Back in the days of Christopher Columbus, voyages made across bodies of ... (more)

Back in the days of Christopher Columbus, voyages made across bodies of water were dependent upon winds and currents to drive the sailing ships. Thus good navigation routes were often determined by prevailing weather conditions such as the Trade Winds, and then discovered by explorers. In this lesson, students will explore the wind climatology for the Atlantic Ocean basin (as determined by satellite data from the past ten years), and then compare it to the route documented by Columbus in 1492. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Lesson Plans
Collection:
My NASA DatA+
Provider:
NASA
Author:
Malinda Burk
No Strings Attached
Africa: Showing the Changing Seasons

Africa: Showing the Changing Seasons

SeaWiFS false color data showing seasonal change in the oceans and on ... (more)

SeaWiFS false color data showing seasonal change in the oceans and on land for Africa. The data is seasonally averaged, and shows spring, summer, fall, winter, spring, summer, and fall. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Gene Feldman
Jesse Allen
Marte Newcombe
No Strings Attached
African Vegetation: Comparing August 1984 and August 1994

African Vegetation: Comparing August 1984 and August 1994

For many years, scientists have believed that the southern expansion of the ... (more)

For many years, scientists have believed that the southern expansion of the Sahara has been due to human activity. However, results from the AVHRR instrument and its measurements of vegetation suggest a different explanation: rainfall patterns. In drier years (1984 was one of the driest summers in recorded history in Northern Africa), the Sahara expands south, but in wetter years (such as 1994), vegetation moves back and there is no net expansion of the Sahara as had been previously suggested. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Compton Tucker
Jesse Allen
Sharon Nicholson
No Strings Attached
African Vegetation: Comparing July 1984 and July 1994

African Vegetation: Comparing July 1984 and July 1994

For many years, scientists have believed that the southern expansion of the ... (more)

For many years, scientists have believed that the southern expansion of the Sahara has been due to human activity. However, results from the AVHRR instrument and its measurements of vegetation suggest a different explanation: rainfall patterns. In drier years (1984 was one of the driest summers in recorded history in Northern Africa), the Sahara expands south, but in wetter years (such as 1994), vegetation moves back and there is no net expansion of the Sahara as had been previously suggested. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Compton Tucker
Jesse Allen
Sharon Nicholson
No Strings Attached
African Vegetation: Comparing September 1984 and September 1994

African Vegetation: Comparing September 1984 and September 1994

For many years, scientists have believed that the southern expansion of the ... (more)

For many years, scientists have believed that the southern expansion of the Sahara has been due to human activity. However, results from the AVHRR instrument and its measurements of vegetation suggest a different explanation: rainfall patterns. In drier years (1984 was one of the driest summers in recorded history in Northern Africa), the Sahara expands south, but in wetter years (such as 1994), vegetation moves back and there is no net expansion of the Sahara as had been previously suggested. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Compton Tucker
Jesse Allen
Sharon Nicholson
No Strings Attached
Alaska: A Bird's Eye View

Alaska: A Bird's Eye View

In this web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada ... (more)

In this web-based, interactive story, Tutangiaq (Too-tang-geye-ack - nicknamed 2T), a Canada Goose, flies across Alaska looking for his family. As he flies, he tells children about the fascinating 49th state. Children learn how Alaska was purchased from the Russians, and other facts about the state. They can also compare the size of Alaska to other states. 2T takes a flight across the volcanic chain in Alaska and helps the students to interactively explore how scientists monitor volcanoes from satellite images in near-real time. At the coast, the bird also meets his Walrus friend who shows him how the sea ice edge has receded and gives an example of an adverse effect on marine life. Finally, 2T arrives in Fairbanks where children use satellite imagery to help 2T find and unite with his family. (less)

Subject:
Science and Technology
Material Type:
Activities and Labs
Collection:
Alaska Space Grant Program
Provider:
Alaska Space Grant Program
Read the Fine Print
Aquifer Basics

Aquifer Basics

This USGS site explains what an aquifer is and defines the different ... (more)

This USGS site explains what an aquifer is and defines the different types of aquifers based on six principal lithologies; sandstone, carbonate, sandstone-carbonate, igneous and metamorphic, sand and gravel, and other rock types. The site features maps and descriptions of the major aquifers in the United States as well as general information about groundwater occurrence and quality. The site also provides links to additional maps and data about specific aquifers across the nation. (less)

Subject:
Science and Technology
Material Type:
Readings
Collection:
USGS
Provider:
USGS
No Strings Attached
Araona Crater (Iturralde Structure)

Araona Crater (Iturralde Structure)

The Araona Crater (also known as the Iturralde Structure) is a suspected ... (more)

The Araona Crater (also known as the Iturralde Structure) is a suspected crater from an impactor which struck northern Bolivia approximately 20,000 years ago. The feature is believed to have been caused by a short period comet striking at 70 kilometers per second and splattering into the muddy alluvial flood plain in the Lower Amazon jungle. The impact created a circular depression which is now roughly 8 kilometers across and 3 meters deep. The structure was discovered in 1988 Landsat data, but was not visited successfully until 1998 because the region is inaccessible. Future expeditions hope to finally settle if the feature truly is the impact crater it appears to be, and if so, determine the nature of the impactor. The full Landsat scene of Northern Bolivia includes the Rio Bene running northward through the image (North is up), with the Rio Madidi running across the image from southwest towards the northeast before joining the Rio Bene. The image was constructed from Landsat Thematic Mapper bands 7, 5, and 3 displayed as red, green, and blue respectively. The green tone of the image distinguishes between different types of vegetation with low scrubland in the alluvial flood plain appears as a light green and dense tropical jungle coverage appearing dark green. The close-up of the impact crater uses the same Landsat data, but passed through a sharpening image filter which emphasizes high spatial frequency features and tends to enhance color contrast. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Darrel Williams
Jesse Allen
No Strings Attached
Asia: Showing the Changing Seasons

Asia: Showing the Changing Seasons

SeaWiFS false color data showing seasonal change in the oceans and on ... (more)

SeaWiFS false color data showing seasonal change in the oceans and on land for Asia. The data is seasonally averaged, and shows the sequence: fall, winter, spring, summer, fall, winter, spring (for the Northern Hemisphere). (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Gene Feldman
Jesse Allen
Marte Newcombe
No Strings Attached
Atlanta Flyby with Opening Labels (542)

Atlanta Flyby with Opening Labels (542)

Atlanta with opening labels (542). This scene shows Landsat Thematic Mapper data ... (more)

Atlanta with opening labels (542). This scene shows Landsat Thematic Mapper data from the shortwave infrared (TM band 5), infrared (TM band 4), and visible green( TM band 2) channels of Atlanta. (less)

Subject:
Science and Technology
Material Type:
Other
Collection:
NASA GSFC Scientific Visualization Studio
Provider:
NASA
Author:
Darrel Williams
Jesse Allen
No Strings Attached
2002 llaF ,gnivloS melborP gnireenignE dna sretupmoC ot noitcudortnI

2002 llaF ,gnivloS melborP gnireenignE dna sretupmoC ot noitcudortnI

.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni ... (more)

.desu si egaugnal gnimmargorp avaJ ehT .gninnalp dna ,tnemeganam ,ecneics ,gnireenigne ni smelborp gnivlos rof seuqinhcet gnipoleved no si sisahpmE .scipot decnavda detceles dna scihparg retupmoc ,gnihcraes dna gnitros ,serutcurts atad ,sdohtem laciremun ,secafretni resu lacihparg ,stpecnoc gnimmargorp revoc smelborp gnimmargorp ylkeeW .esruoc eht fo sucof eht si tnempoleved dna ngised erawtfos detneiro-tcejbO .snoitacilppa cifitneics dna gnireenigne rof sdohtem lanoitatupmoc dna tnempoleved erawtfos latnemadnuf stneserp esruoc sihT (less)

Subject:
Science and Technology
Material Type:
Assessments
Full Course
Homework and Assignments
Lecture Notes
Syllabi
Collection:
MIT OpenCourseWare
Provider:
M.I.T.
Author:
George Kocur
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