ELECTROMAGNETIC SPECTRUM
All wavelengths and frequencies of electromagnetic radiation
What is the electromagnetic spectrum?
Telescopes that collect visible light
What are optical telescopes?
Human-made objects that orbit Earth
What are artificial satellites?
Large vehicles used to send humans into space
What are rockets?
Satellite images showing cities and highways at night indicate this
What is human activity?
The type of radiation with the longest wavelength and lowest frequency
What are radio waves?
Telescopes that use mirrors instead of lenses
What are reflecting telescopes?
Collecting information without being physically present
What is remote sensing?
The reusable spacecraft used to reach Earth orbit
What is the space shuttle?
Satellites that track hurricanes and severe weather
What are weather satellites?
Radiation humans can see with their eyes
What is visible light?
Images colored by computers to show details not seen naturally
What are false-color images?
Satellites that provide weather information and storm images
What are weather satellites?
Uncrewed vehicles carrying scientific instruments to space
What are space probes?
Images taken over time showing changes in Earth’s surface
What is monitoring changes over time?
Radiation is used to see heat and warm objects
What is infrared radiation?
Why are some telescopes placed in space instead of on Earth
What is it because Earth’s atmosphere blocks or distorts some radiation?
Satellites that help with navigation by sending microwave signals
What are GPS satellites?
Why are uncrewed spacecraft often used instead of humans
What is because they are safer and cheaper and can travel farther?
Composite images are created by doing this
What is combining multiple satellite images?
Which has more energy: gamma rays or radio waves? Why?
What are gamma rays? They have a higher frequency and shorter wavelength.
Why can infrared images show objects hidden by dust clouds
What is because infrared radiation can pass through dust better than visible light?
Why are geosynchronous satellites are useful for weather observation
What is it because they stay in the same location on Earth continuously?
How computers help in space exploration
What is by controlling spacecraft, collecting data, and creating images?
How satellite images can help protect people from disasters
What is the warning about storms, fires, and environmental changes?