Science Fusion: Unit 2, Lesson 4 (Part A)

Front

What is electromagnetic (EM) radiation?

Back

Electromagnetic radiation is a form of energy that travels through space at the speed of light and includes visible light, radio waves, X-rays, and more.

Front

Are all types of EM radiation visible to the human eye?

Back

No, some types of EM radiation, such as ultraviolet and infrared, are invisible to the human eye.

Front

When were the first aerial photographs taken?

Back

The first aerial photographs were taken from hot-air balloons in 1858.

Front

What technology is used to process data collected by sensors in EM radiation imaging?

Back

Computers are used to process the data collected by the sensor.

Front

What was the primary method of observing Earth before the invention of aircraft?

Back

Observations of Earth were primarily made from the ground.

Front

What does GIS stand for?

Back

GIS stands for Geographic Information System.

Front

What types of information can a GIS use?

Back

A GIS can use different types of maps, images, and data.

Front

What is the purpose of aerial photography?

Back

Aerial photography is used to capture images of the Earth's surface from the air for various applications, including mapping and surveying.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (or about 186,282 miles per second).

Front

What is the electromagnetic spectrum?

Back

The electromagnetic spectrum is the range of all types of EM radiation, from radio waves to gamma rays.