Remote Sensing Quiz

<p>0 to 255 (D)</p> Signup and view all the answers

<p>50% (D)</p> Signup and view all the answers

<p>Measuring heat sources and radiant heat energy (C)</p> Signup and view all the answers

<p>Rayleigh scattering (B)</p> Signup and view all the answers

<p>Wavelengths that pass through the atmosphere without significant absorption (B)</p> Signup and view all the answers

<p>It absorbs all colors except green, which is reflected (D)</p> Signup and view all the answers

<p>The total energy that interacts with an object per wavelength (C)</p> Signup and view all the answers

<p>0.7 - 1.3 μm (D)</p> Signup and view all the answers

<p>Rayleigh scattering (A)</p> Signup and view all the answers

<p>3.0 - 14.0 μm (B)</p> Signup and view all the answers

<p>1.3 - 3.0 μm (C)</p> Signup and view all the answers

<p>0.4 - 0.7 μm (C)</p> Signup and view all the answers

<p>Active remote sensing generates its own energy. (A)</p> Signup and view all the answers

<p>It is a constant speed in a vacuum. (C)</p> Signup and view all the answers

<p>0.4 to 0.7 micrometers (A)</p> Signup and view all the answers

<p>Approximately 8.3 minutes (D)</p> Signup and view all the answers

<p>Radar and Lidar systems (C)</p> Signup and view all the answers

<p>A fundamental relationship in electromagnetic energy. (B)</p> Signup and view all the answers

<p>The thickness of a bacterium (B)</p> Signup and view all the answers

<p>Ultraviolet light is within their visible spectrum range. (C)</p> Signup and view all the answers

<p>The size of the area on the ground represented by one pixel. (D)</p> Signup and view all the answers

<p>0 to 255 (C)</p> Signup and view all the answers

<p>Black and white imagery of the entire visible spectrum. (D)</p> Signup and view all the answers

<p>It can sense several bands of imagery at once. (C)</p> Signup and view all the answers

<p>Three color guns representing RGB. (C)</p> Signup and view all the answers

The total energy interacting with an object.

Percentage of reflected energy, per wavelength.

Measures vegetation health using light.

Size of area on ground per pixel.

Measured energy at one pixel.

Wavelengths of electromagnetic energy passing through the Earth's atmosphere with minimal absorption.

Infrared wavelengths from 0.7 to 1.3 μm, often used in satellite imagery and color infrared photography.

Infrared wavelengths from 1.3 to 3.0 μm, often used for measuring water content in plants.

Infrared wavelengths from 3.0 to 14.0 μm, used to measure heat sources and radiant heat energy.

Light scattering by tiny particles much smaller than the wavelength.

Scattering of light by particles roughly the same size as the light's wavelength, e.g., dust and smoke.

Scattering of light by larger particles than the light's wavelength, causing a white appearance, e.g., clouds.

Electromagnetic energy in the 3.0-14.0 micrometer range, used to measure heat.

Gathering information about an object on Earth using a sensor from a distance

Sensor emits its own energy to target (like laser or radar), measures reflected energy.

Sensor measures energy reflected or emitted by a target.

Energy that travels in waves, like light.

Main energy source for remote sensing measurements from Earth. Takes 8.3 minutes for light to travel from sun to Earth

300 million meters per second

Range of wavelengths of electromagnetic energy, from radio waves to gamma rays

Distance between corresponding points on two successive waves

Spatial resolution determines the size of the ground area represented by a single pixel. A higher resolution means smaller areas are represented by each pixel, providing a greater amount of detail.

A Digital Number (DN) represents the amount of energy measured at a single pixel. It is often expressed as a numerical value on a scale.

Panchromatic imagery combines all visible wavelengths of light to create a single black and white image.

Multispectral imagery captures images in multiple bands of the electromagnetic spectrum, allowing us to see different aspects of the world.

A color composite image uses three different bands of imagery to create a colored image, representing a scene as we would see it with our eyes.