NASA | Exploring Energy: Infrared

The video tutorial explains how all objects emit thermal energy, which is a primary source of infrared radiation. It highlights the role of technology in detecting infrared radiation, allowing agencies like NASA and NOAA to study Earth's systems. The tutorial also covers the historical discovery of infrared by Sir William Herschel and provides a classroom activity to observe infrared radiation using a prism. The video emphasizes the importance of infrared imagery in weather prediction and environmental monitoring.

What is the primary source of infrared radiation?

• Radio waves

• Ultraviolet light

• Thermal energy

• Visible light

Which part of the electromagnetic spectrum is just beyond visible light?

• Microwaves

• Infrared

• X-rays

• Ultraviolet

How do agencies like NASA use thermal infrared imagery?

• To measure the speed of light

• To study the surface of Mars

• To monitor Earth's weather patterns and environmental changes

• To detect radio signals from space

What did Sir William Herschel discover about the spectrum of sunlight?

• It is composed of ultraviolet light

• It includes infrared radiation beyond the visible spectrum

• It contains only visible colors

• It is made up of sound waves

In the classroom experiment, where should thermometers be placed to observe the increase in temperature?

• In the ultraviolet section

• In the shade only

• In the blue and green areas

• In the blue, yellow, and just beyond red areas