WorksheetsChapter 1: Introduction Remote Sensing
Total questions: 10
Worksheet time: 5mins
What is remote sensing?
Collecting data through physical contact
Collecting data without physical contact
Observing objects with a microscope
Collecting data with and without physical contact
Which of the following is NOT a component of the remote sensing system?
Energy source
Sensor
Soil type
Transmission medium
What is the primary source of energy in passive remote sensing?
Artificial satellites
The Sun
Laser beams
Earth's core
Which of the following is an example of active remote sensing?
LiDAR
Photography
Thermal imaging
Aerial observation
In remote sensing, spatial resolution refers to:
The color depth of the image
The number of bands in an image
The smallest object that can be detected
The number of sensors on a satellite
Which type of remote sensing system can operate both day and night and in all weather conditions?
Passive system
Optical system
Active system
Infrared system
When was the first Landsat satellite (Landsat 1) launched?
1972
1990
1969
2020
What is the main advantage of active remote sensing?
It relies on sunlight, making it simple and cost-effective.
It can operate both day and night, independent of solar radiation.
It provides natural color images similar to human vision.
It is unaffected by atmospheric conditions such as clouds or rain.
Which of the following shows the correct steps in the passive remote sensing process?
Energy emission from sensor → Interaction with Earth surface → Detection by satellite → Data processing
Sunlight emission → Interaction with Earth surface → Reflection/emission detected by sensor → Data processing and interpretation
Sensor generates its own energy → Energy interacts with target → Signal recorded → Data transmitted
Data processing → Reflection/emission detected by sensor → Sunlight emission → Interaction with Earth surface
What is a major disadvantage of passive remote sensing?
It cannot operate during nighttime or under heavy cloud cover.
It requires high energy consumption to transmit signals.
It is more expensive than active remote sensing systems.
It cannot provide information about vegetation and land cover.
