Font size
WorksheetsElectromagnetic Spectrum
Total questions: 1
Worksheet time: 7mins
1-10.
Answer the questions below after watching the video
What is essential for the existence of the modern world and our daily lives, yet is invisible?
Gravity
Electromagnetic radiation
Air
Sound
How do electromagnetic waves differ from ocean waves?
They require water to travel
They can only travel through air
They can travel through the vacuum of space
They have no frequency
What determines the frequency of an electromagnetic wave?
The height of the wave
The number of crests passing a point per second
The speed of light
The distance between crests
Which waves have the shortest wavelength and highest energy in the electromagnetic spectrum?
Gamma rays
Infrared waves
Microwaves
Radio waves
What range of wavelengths can the human eye detect?
300 to 400 nanometers
700 to 1000 nanometers
100 to 200 nanometers
400 to 700 nanometers
Why do leaves appear green to the human eye?
They emit green light
They reflect green light
They absorb green light
They convert green light
What allows scientists to study phenomena beyond visible light?
Microscopes
Magnifying glasses
Telescopes
Spectral signatures
What is a spectral signature?
A scientist's autograph
A graph showing interactions across the electromagnetic spectrum
A signature of a spectrum
A type of light
What did NASA's Spitzer Space Telescope discover in a galaxy 3.2 billion light-years away?
Alien life
A black hole
Water and organic molecules
A new planet
How do solar flares and eruptions affect Earth?
They increase global temperatures
They are harmless
They can disrupt satellites and communications
They cause earthquakes
