CFA Quiz: Waves & Electromagnetic Radiation

Which of the following relationships correctly describes the relationship between wave speed, frequency, and wavelength?

• Wave speed = Frequency x Wavelength

• Wave speed = Frequency ÷ Wavelength

• Wave speed = Wavelength ÷ Frequency

• Wave speed = Frequency + Wavelength

Tags

NGSS.HS-PS4-1

What happens to the wavelength of a wave if the frequency increases, assuming the speed remains constant?

• It increases

• It decreases

• It stays the same

• It disappears

Tags

NGSS.HS-PS4-1

Which of the following types of electromagnetic radiation has the highest frequency?

• Radio waves

• Infrared waves

• X-rays

• Microwaves

Tags

NGSS.HS-PS4-1

Which form of electromagnetic radiation is most likely to cause damage to human cells?

• Visible light

• Radio waves

• Gamma rays

• Microwaves

Tags

NGSS.HS-PS4-4

Why is digital transmission of information generally preferred over analog?

• It is easier to understand

• It experiences less interference and can be stored efficiently

• It cannot be transmitted over long distances

• It requires more energy to transmit

Tags

NGSS.HS-PS4-2

Which type of electromagnetic wave has the least energy?

• Radio waves

• Infrared waves

• X-rays

• Gamma rays

Tags

NGSS.HS-PS4-4

Which type of electromagnetic wave is used in fiber optic communication?

• Radio waves

• Infrared waves

• Microwaves

• Ultraviolet waves

Tags

NGSS.HS-PS4-5

Which type of electromagnetic wave is used for cell phone communication?

• X-rays

• Gamma rays

• Radio waves

• Visible light

Tags

NGSS.HS-PS4-5

What is one major danger of ultraviolet (UV) radiation?

• It causes sunburn and skin damage

• It helps plants grow

• It makes objects glow in the dark

• It is completely harmless

A sound wave travels at 340 m/s through the air. If the frequency of the wave is 170 Hz, what is the wavelength of the wave?

• 2 m

• 2 hz

• 4m

• 4hz