Electromagnetic Waves and Their Properties

The video reviews the electromagnetic spectrum, explaining the different types of waves based on their frequency and wavelength. It covers visible light, the only part of the spectrum humans can see, and discusses the speed of light. The video also explores the uses and dangers of various electromagnetic waves, including radio waves, microwaves, infrared, ultraviolet, X-rays, and gamma rays. It highlights the applications of these waves in technology and their effects on the human body.

Which type of wave can penetrate Earth's atmosphere?

• X-rays

• Radio waves

• Ultraviolet rays

• Gamma rays

What happens to the frequency as the wavelength decreases?

• Frequency becomes zero

• Frequency increases

• Frequency remains constant

• Frequency decreases

What is the speed of all electromagnetic waves in a vacuum?

• 300,000 kilometers per hour

• 300,000 kilometers per second

• 150,000 kilometers per hour

• 150,000 kilometers per second

Which of the following is NOT a use of radio waves?

• AM/FM radio

• Microwave ovens

• Television

• Remote controls

What is a common use of microwaves?

• Detecting heat

• X-ray imaging

• Sterilizing equipment

• Cooking food

Which type of wave is associated with heat detection?

• Infrared

• Gamma rays

• Ultraviolet

• X-rays

What is the acronym used to remember the order of colors in the visible spectrum?

• RGB

• ROY G BIV

• UVX

• CMYK

Which type of light can cause skin cancer?

• Radio waves

• Ultraviolet

• Visible light

• Infrared

What is a primary use of X-rays?

• Cooking food

• Imaging bones

• Transmitting radio signals

• Detecting heat

Which type of wave has the highest energy?

• Gamma rays

• Radio waves

• Microwaves

• X-rays