Which of the following correctly lists electromagnetic radiation from longest wavelength to shortest?

Gamma rays, X-rays, ultraviolet, visible light, infrared, microwaves, radio waves Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, gamma rays Visible light, radio waves, X-rays, infrared, gamma rays, microwaves, ultraviolet Infrared, visible light, ultraviolet, radio waves, X-rays, microwaves, gamma rays

What is true about the speed of different types of electromagnetic radiation in a vacuum?

Gamma rays travel faster because they carry more energy Radio waves travel slowest because they have the longest wavelength All electromagnetic radiation travels at exactly the same speed — about 300,000 km/s Visible light travels fastest because our eyes evolved to detect it

How do wavelength, frequency, and energy relate to each other in the electromagnetic spectrum?

Longer wavelength means higher frequency and higher energy Shorter wavelength means higher frequency and higher energy Wavelength and energy are the same thing — frequency is unrelated All wavelengths carry the same energy per photon

Which type of electromagnetic radiation does our atmosphere block, preventing it from reaching the ground?

Only visible light — all other types pass straight through Only gamma rays — everything else reaches the ground Most wavelengths are blocked — only visible light and radio waves pass through freely The atmosphere blocks everything equally

Which type of electromagnetic radiation is most useful for studying cold gas clouds and pulsars in space?

X-rays Radio waves Gamma rays Ultraviolet light

Astronomers studying the extreme environments around black holes — where gas is heated to millions of degrees — would most likely use which type of telescope?

A radio telescope An infrared telescope An X-ray telescope A visible-light telescope

Why can infrared telescopes see through dust clouds in space that block visible light?

Infrared radiation has a longer wavelength than visible light, so it bends around dust particles instead of being absorbed Infrared is stronger than visible light and simply pushes through dust Dust clouds are actually transparent to all types of light Infrared telescopes use special lasers to burn through dust clouds

Which type of radiation from the Sun can cause sunburn and skin damage?

Infrared radiation Visible red light Ultraviolet (UV) radiation Radio waves

What does ROYGBIV stand for in the context of visible light?

The colors of the visible spectrum in order from longest to shortest wavelength: Red, Orange, Yellow, Green, Blue, Indigo, Violet The colors of the visible spectrum in order from shortest to longest wavelength: Red, Orange, Yellow, Green, Blue, Indigo, Violet A list of radioactive elements detected in starlight The different types of electromagnetic radiation from hottest to coolest

The most energetic events in the universe — such as neutron star mergers and some types of supernovae — emit which type of radiation?

Radio waves Visible light Infrared radiation Gamma rays

Why did astronomers need to launch the Hubble Space Telescope into orbit rather than just building a bigger ground-based telescope?

Ground-based telescopes cannot be made large enough to see distant galaxies Above the atmosphere, Hubble avoids atmospheric blurring and can detect ultraviolet light that the atmosphere absorbs It is warmer in space, which makes the mirrors work better Ground-based telescopes are not allowed to point at the Sun