Astronomy Electromagnetic Spectrum

What does "spectrum" mean?

• a range
• a score
• a light
• a sound

What are electromagnetic waves?

• sound waves
• electric & magnetic fields that travel through space very quickly
• ocean waves
• things like longitudinal waves

True or false: as you move along the spectrum, left to right, the wavelengths decrease in size (get smaller)

• true
• false

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low
• high, high
• low, high
• low, low

True or false: The electromagnetic spectrum is the complete range of electromagnetic waves placed in order of increasing frequency

• True
• False

Select the correct order of waves on the EMS (think of the acronym!)

• Radio, Micro, Infra, Visible, Ultra, X-ray, Gamma
• Gamma, X-ray, Ultra, Vis, Infra, Micro, Radio
• Vis, Micro, Infra, Ultra, X-ray, Gamma, Radio
• Micro, Radio, Vis, Infra, Ultra, X-ray, Gamma

Which has the LONGEST wavelength and, therefore, the lowest frequency/energy

• Gamma Rays
• Radio Waves
• Visible Light
• Infrared rays

Which has the SHORTEST wavelength and, therefore, the highest frequency/most energy

• Radio waves
• Ultraviolet Rays
• Gamma Rays
• X-rays

Which section of the spectrum is the ONLY one we can see?

• X-rays
• Visible Light
• Gamma Rays
• Ultraviolet Rays

Which part of the electromagnetic spectrum has high enough energy to cause damage to eyes and skin, and sometimes even cancer?

• Infrared Rays
• Radio Waves
• Microwaves
• Ultraviolet Rays