Ground truthing is the best method for verifying data gathered by satellites. Ground truthing involves collecting data on location by direct observation, as opposed to remote sensing which collects data without direct observation or contact. Ground truthing allows scientists to check the accuracy of remote sensing data by taking measurements and observations in the field.

1. 10/19/11 B Day
LEQ: How do humans use technology to
study geologic evolution?
1. What is an adaptation?
2. What is one adaptation that bald eagles have to
help them survive?
3. What is natural selection?
4. Give one example of natural selection.
5. Copy and complete the following sentence:
If two species share similar adaptations, we can
assume that they (share a common ancestor/ were
born on the same continent)

2. Schedule:
TODAY: LAST DAY OF UNIT 1
NEXT CLASS: REVIEW FOR UNIT 1 EXAM
NEXT CLASS: UNIT 1 EXAM

3. Today’s LEQ: How do humans use
technology to study geologic
evolution?
By the end of today, you should be able to…
1. Compare and contrast information gathered
from remote imagery and ground truthing
2. Identify the different ways that sets of data
are collected

4. Focus Vocabulary:
42. Remote Sensing
43. Ground truthing
44. Urban Sprawl

5. Activating Strategy:
Discovery Education: Tragedy in New Orleans
STOP AND JOT:
How did scientists, politicians, and
the media collect information
about the causes and effects of
Hurricane Katrina?

6. Hurricane Katrina
Satellite Images –
Remote Sensing
Before After
Super Dome in New Orleans

7. Before After
What information can you observe and infer from this photo?
NEW NEW
ORLEANS ORLEANS

8. What information can you observe and infer from this photo?

9. How are these two photos different?

10. You just discovered….
The two different
methods for collecting
data about geologic
evolution!

11. Draw this in your notes:
Collecting Data
REMOTE SENSING:
-collecting
information about
an area without
visiting it
Ex. Satellite photos

12. Observe and Infer:
Let’s compare these two regions…
Image 1 Image 2

13. How can remote sensing
help us see…
–Beach erosion (evens)
–Deforestation
–Forest Fire damage
–Volcanic eruptions (odds)
–Urban Sprawl
–Ice on Earth

14. B. We can see beach erosion after a hurricane
through satellite imagery (remote sensing)

15. Deforestation

16. Forest Fires!

17. July 2008 October 2008
Kasatochi Volcano before and after the August
2008 eruption.
An example of volcanic eruption
Remote sensing!

18. Ice on Earth

19. Remote Sensing ???????

20. Draw this in your notes:
Collecting Data
REMOTE SENSING: GROUND TRUTHING:
-collecting -collecting
information about information about an
an area without area by visiting it
visiting it
Ex. Taking water
Ex. Satellite photos samples

22. Remote Sensing Ground Truthing

23. PUT THESE IN YOUR T-CHART!
Satellite Images Collecting soil samples
Investigating buried fossils
Weather Station
Checking a Baby monitor
Interviewing people in person
Aerial (airplane) photographs
Taking pictures with a portable camera

24. Remote Sensing Ground Truthing
-satellite images -collecting soil samples
-aerial photographs -interviewing people
-baby monitor -taking pictures with a
-weather station portable camera
-investigating buried
fossils

25. What are the advantages and
disadvantages of using remote sensing?
Advantages Disadvantages
• Can track changes of • Cannot test conditions
an area over time of the environment
• Do not actually have to • Cannot see detail
go to the area • Cannot talk to people
• Can collect data from who are there
the area anytime

26. What are the advantages and
disadvantages of ground truthing?
Advantages Disadvantages
• Test the conditions of • Can only survey a small
the environment area at a time
• More detail regarding • Cannot track change of
the area can be the area over a long
observed period of time
• Verify what remote • Can only collect data
sensing gathers when area is safe
• Talk to people who are
there

27. HOT Q: Think-Pair-Share
It’s 2005, and Hurricane Katrina is hitting
New Orleans. How could you use
remote sensing and ground truthing to
gather data and information about the
hurricane and the damage it caused?

28. CONTEXT CLUES:
1. I live in an urban area. There are big buildings,
busy streets, and lots of people that always seem
to be busy!
2. He was so tired from school that he went straight
home and fell asleep. When his mom got home,
she found him sprawled across the couch with his
backpack still on!
2. Her things were sprawled all across the floor. You
could barely see the carpet when you walked into her
room!
Stop and Jot: Write your own definition of these words!

29. Word Study:
Urban = City
Sprawl = spread out; usually in a sloppy way
WHAT IS URBAN
SPRAWL?

30. FRAYER DIAGRAM: Urban Sprawl
DEFINITION: LOOKS LIKE:
Cities spreading out into
areas that used to be rural
(countryside)
Study with:
Urban Sprawl EFFECTS:

31. Urban Sprawl
• http://www.youtube.com/watch?v=5qGSIqsFa
_Y

32. Urban Sprawl Video
1. How are satellites used to observe urban
sprawl?
2. What are some problems with urban sprawl
identified in the video?
3. What kind of information do we use to track
urban sprawl?
http://www.youtube.com/watch?v=5qGSIqsFa
_Y

33. FRAYER DIAGRAM: VOCAB WORD
DEFINITION: LOOKS LIKE:
Cities spreading out into Less grass
areas that used to be rural Fewer trees
(countryside) More buildings
More roads
Study with:
Urban Sprawl EFFECTS:

34. Las Vegas
May 1973 May 2000

35. FRAYER DIAGRAM: VOCAB WORD
DEFINITION: LOOKS LIKE:
Cities spreading out into Less grass
areas that used to be rural Fewer trees
(countryside) More buildings
More roads
Study with:
Urban Sprawl EFFECTS:
REMOTE SENSING!

36. HOT Q: What effects would you predict as a
result of urban sprawl?

37. FRAYER DIAGRAM: VOCAB WORD
DEFINITION: LOOKS LIKE:
Cities spreading out into Less grass
areas that used to be rural Fewer trees
(countryside) More buildings
More roads
Study with:
Urban Sprawl EFFECTS:
More cars, more buildings,
REMOTE SENSING! more pollution

38. SUMMARIZER: Write a letter to the mayor of Charlotte!
Your letter should:
1) Describe urban sprawl
2) Explain how we study urban sprawl (how do we collect the data?!)
3)2000
Describe the negative effects of urban sprawl
2010
4) Give 2 ways that we can alleviate (ease or fix) the problem
of urban sprawl in Charlotte

39. EOG PRACTICE!!!!

40. 1. What method can scientists in the United
States use to monitor land use in the Amazon
rainforest over time?
a) Ground truthing
b) Topographic maps
c) Remote sending
d) GPS

41. 3. Remote sensing is the use of imagery from space or
air to describe Earth’s surface. For which of the
following projects would remote sensing be most
useful?
a) Determining the change of elevation of a 1 square
kilometer area
b) Monitoring the changes in land use around a city
over 5 years
c) Determining the distance between 2 cities
d) Identifying areas where highways cross over
bodies of water

42. 4. Which is best used to track the global
movement of volcanic ash after an
eruption?
A) Ground truthing
B) Satellite photographs
C) Topographic maps
D) Weather balloons

43. 5. How can satellite imagery best be used
after a hurricane hits the coast?
A) To check nearby lake depths
B) To identify the amount of beach erosion
C) To determine the location of sea turtles’
nests
D) To map topography inland of the coastal
region

44. 6. Which is the best method for verifying
data gathered by satellites?
A) Ground truthing
B) Reflectance curves
C) Satellite imagery
D) Spectral analysis

45. 6. Which is the best method for verifying
data gathered by satellites?
A) Ground truthing
B) Reflectance curves
C) Satellite imagery
D) Spectral analysis