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Remote Sensing and Wetlands

Total questions: 50

Worksheet time: 25mins

Name
Class
Date
1.
How are remote sensing data commonly used?
a)
to predict surface geology
b)
to monitor changes in the land
c)
to change contour intervals on a map
2.

Is our eye a remote sensor?

a)

YES

b)

NO

3.
How do satellites "see" things?
a)
Sensing electromagnetic radiation
b)
MAGIC of course
c)
With cameras on loop
d)
Using remote sensing cameras mounted to the body and projected to earth
4.

Which phrase refers to the collection of geospatial data through satellite imagery?

a)

Remote Sensing

b)

Fieldwork

c)

Global Positioning Systems

d)

Mental Maps

e)

Geographic Information Systems

5.

Photograph: European Space Agency, "Congo River, Africa."


A geographer would MOST likely uses a satellite image like the one above for which of the following purposes?

a)

To track the migration pattern of birds.

b)

To determine the environmental impact of building a dam on the distribution of water throughout the region.

c)

To count the number of people that live in a given area.

d)

To design telecommunications networks for an urban area.

e)

To map the extent of a formal region.

6.

The image above was taken by the National Oceanic and Atmospheric Administration to survey the damage caused by Hurricane Katrina. Which of the following geographic technologies is this an example of?

a)

Mental Mapping

b)

Remote Sensing

c)

GOS

d)

GPS

e)

GIS

7.

When light is reflected off a surface, it is detected by passive remote sensing satellites and produces a(n) ________________, which we use to identify different surfaces.

a)

Rainbow

b)

Pulsar

c)

Spectral Signatures

d)

Awe inspiring moment

8.

Remote sensing is use for ______________.

a)

Detecting plant health

b)

Measuring snowpack

c)

Monitoring wetlands

d)

All of the above

9.

T or F: Remote sensing can be used to monitor changes on the Earth's surface over time.

a)

True

b)

False

c)

Not Sure

10.

The X-axis on a Spectral Signature graph indicates the ________

a)

Data Values

b)

Spectral Bands

11.
What is a pixel?
a)
Tiny squares of colour on a screen.
b)
A fairy like creature that lives in a forest.
c)
A whole picture.
d)
A binary code.
12.
What is resolution?
a)
It is the total number of pixels in an image
b)
It is a measure of how many pixels are used in a given area
c)
It is a measure of how much an image has been compressed
d)
It is a measure of how big an object is
13.
Increasing the resolution of an image means that
a)
More pixels will be used to make up the image
b)
More colours will be used to make up the image
c)
The image size will be bigger
14.
Which of the following file types will use lossy compression to reduce the size of the image file?
a)
JPEG (JPG)
b)
BMP (Bitmap)
c)
MP3
d)
MPEG
15.

Number of pixels in an image is called ____________-

a)

Spatial Resolution

b)

Tonal resolution

c)

Time Resolution

d)

Spectral Resolution

16.

256 gray levels indicate __________- bits per pixel

a)

4

b)

8

c)

16

d)

32

17.

A Grayscale image is one which has __________ planes and __________ pixel levels

a)

1, 255

b)

3, 255

c)

1, 1024

d)

3, 1024

18.

What is the primary characteristic of hyperspectral sensors?

a)

High spatial resolution

b)

Large area coverage

c)

High number of spectral bands

d)

Short revisit time

19.

What is 'clipping' in GIS?

a)

Removing spatial data outside a boundary

b)

Changing the color of a feature

c)

Combining data layers

d)

Improving spatial accuracy

20.

Which sensor captures data at multiple wavelengths across the electromagnetic spectrum?

a)

Panchromatic

b)

Hyperspectral

c)

RADAR

d)

Thermal

21.

Which satellite program provides free multispectral imagery dating back to the 1970s?

a)

Sentinel

b)

WorldView

c)

Landsat

d)

TerraSAR-X

22.

What is the purpose of 'image classification' in remote sensing?

a)

Measuring spectral reflectance

b)

Assigning pixel values to land cover types

c)

Reducing spatial resolution

d)

Mapping ground elevation

23.

Which of these indices is commonly used to assess vegetation health?

a)

NDVI

b)

LST

c)

DEM

d)

SRTM

24.

What does radiometric resolution refer to in remote sensing?

a)

The area covered by a pixel

b)

The spectral range of a sensor

c)

The sensitivity to different levels of brightness

d)

The ability to capture fast-moving objects

25.

Which term refers to the regular revisit time of a satellite?

a)

Temporal resolution

b)

Spatial resolution

c)

Radiometric resolution

d)

Spectral resolution

26.

Traffic control and wind speeds can be monitored or measured through remote sensing

a)

True

b)

False

27.

In geography, remote sensing can be by the use of .........

a)

television

b)

radar

c)

camera

28.

The image of objects that appear on the mirror through the camera lens or appear directly on the printout is called ....

a)

Rides/Vehicle/Wahana

b)

Imagery/Citra

c)

Satellites/Satelit

d)

 Censorship/Sensor

e)

Power/Tenaga

29.

In Remote Sensing, cameras, scanners, and radiometers belonged to the group....

a)

Aircraft/Pesawat

b)

Sensors/Sensor

c)

Satellite/Satelit

d)

Imagery/Citra

e)

Site/Situs

30.

The results of remote sensing that have characteristics related to space are called…

a)

Location

b)

Photographer

c)

Digital

d)

Temporal

e)

Spatial

31.

Pay attention to the results of the following image interpretation

1) Same shape and size

2) Longitudinal pattern following the highway

3) The distance of the object is the same

4) The texture of vegetation around objects is medium to coarse

The object that corresponds (match) to the result of such interpretation is...

a)

Chocolate plantation

b)

Settlements on urban area

c)

Settlements on rural areas

d)

Rice fields

e)

Rivers

32.

The location of an object in relation to the surroundig environtment is called..

a)

 Associations

b)

Pattern

c)

Site

d)

Shadows

e)

Spectrum

33.

Image classification is the process in which an word is matched to a specific image. 

a)

True

b)

False

34.

In training and testing images which one needs more data

a)

Training

b)

Testing

c)

Both

d)

I dont know

35.

Which digital imaging process takes place when an image's visual appearance is improved

a)

Manipulation

b)

Restoration

c)

Enhancement

d)

Compression

36.

Which of the following is the first and foremost step in Image Processing?

a)

Image acquisition

b)

Segmentation

c)

Image enhancement

d)

Image restoration

37.

___________ determines the quality of a digital image.

a)

The discrete gray levels

b)

The number of samples

c)

discrete gray levels & number of samples

d)

None of the mentioned

38.

Mangroves in coastal wetlands are important for:

a)

Soil erosion prevention

b)

Desertification

c)

Oil extraction

d)

Wind energy production

39.

When is World Wetlands Day celebrated?

a)

February 2

b)

March 15

c)

April 22

d)

May 5

40.

Which wetland is designated as a site of international importance under the Ramsar Convention?

a)

Yellowstone National Park

b)

Serengeti National Park

c)

Sundarbans

d)

Great Barrier Reef

41.

Wetlands are crucial for water purification through a process known as:

a)

Desalination

b)

Eutrophication

c)

Filtration

d)

Condensation

42.

In which year was the Ramsar Convention on Wetlands adopted?

a)

1962

b)

1971

c)

1980

d)

1992

43.

How do wetlands contribute to flood control?

a)

By promoting deforestation

b)

By acting as sponges that absorb excess water

c)

By encouraging urbanization

d)

By increasing impervious surfaces

44.

What term is commonly used to describe the fluctuation between wet and dry conditions in wetlands?

a)

Eutrophication

b)

Hydroponics

c)

Hydroperiod

d)

Desiccation

45.

Which of the following is not a type of wetland?

a)

Marsh

b)

Desert

c)

Swamp

d)

Bog

46.

Approximately what percentage of the world's known species depend on wetlands for their survival?

a)

10%

b)

25%

c)

50%

d)

75%

47.

What is the primary cause of wetland degradation worldwide?

a)

Climate change

b)

Agricultural runoff

c)

Urbanization

d)

Deforestation

48.

Which ecosystem service is NOT provided by wetlands?

a)

Water filtration

b)

Carbon sequestration

c)

Noise pollution

d)

Flood control

49.

Which international convention is associated with the celebration of World Wetlands Day?

a)

CBD (Convention on Biological Diversity)

b)

Ramsar Convention

c)

CITES (Convention on International Trade in Endangered Species)

d)

UNCLOS (United Nations Convention on the Law of the Sea)

50.

Which one of these bodies of water is not a type of wetland?

a)
b)
c)
d)

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