3Q EM WAVES

Open Ended

Why is it important to understand the different regions of the electromagnetic spectrum and their uses in everyday life?

Open Ended

What is the main difference between a longitudinal wave and an electromagnetic wave?

Fill in the Blank

Electromagnetic waves travel through a vacuum at a speed of ___ m/s.

Multiple Select

Which of the following statements about electromagnetic waves is/are correct?

• They carry energy.

• They can travel through a vacuum.

• They are classified according to their frequency.

• They require a medium to travel.

Multiple Choice

Arrange the following regions of the EM spectrum in order of increasing frequency: Infrared, X-ray, Visible, Radio.

• Radio, Infrared, Visible, X-ray

• Infrared, Radio, Visible, X-ray

• Radio, Visible, Infrared, X-ray

• Visible, Infrared, Radio, X-ray

Open Ended

Explain how electromagnetic waves are classified according to their frequency and give an example of a region in the EM spectrum.

Multiple Choice

Which of the following is NOT a region of the electromagnetic (EM) spectrum?

• Radio waves

• Microwaves

• Sound waves

• Gamma rays

Multiple Choice

Which type of electromagnetic wave has the longest wavelength?

• Radio waves

• Microwaves

• Ultraviolet rays

• Gamma rays

Multiple Choice

What is the frequency range of radio waves?

• 30 kHz to 3,000 MHz

• 3 GHz to 30 GHz

• 300 MHz to 3 GHz

• 3 kHz to 30 kHz

Multiple Choice

Arrange the following types of radio wave frequencies in order from lowest to highest: High frequency, Medium frequency, Ultra-high frequency, Low frequency.

• Low frequency, Medium frequency, High frequency, Ultra-high frequency

• Medium frequency, Low frequency, High frequency, Ultra-high frequency

• Ultra-high frequency, High frequency, Medium frequency, Low frequency

• High frequency, Medium frequency, Low frequency, Ultra-high frequency

Multiple Choice

Which of the following are common applications of ultra-high frequency radio waves?

• Police radio communication

• AM radio broadcasting

• Shortwave broadcasting

• Long-distance navigation

Fill in the Blank

Who discovered radio waves?

Open Ended

Explain the significance of Hertz’s experiment with radio waves in the development of wireless communication.

Multiple Choice

Which of the following celestial bodies is NOT shown as a source of radio emissions in the provided graph?

• Earth

• Jupiter

• Sun

• Mars

Fill in the Blank

Radio waves have the ___ wavelengths of all electromagnetic waves.

Open Ended

Explain how the frequency range and wavelength of radio waves make them suitable for transmitting data over long distances.

Fill in the Blank

RADAR stands for RA___ Detection And Ranging.

Multiple Select

Which of the following are common uses of radio waves as shown in the images?

• RADAR systems

• WiFi communication

• GPS navigation

• Medical X-rays

Open Ended

Describe the process by which RFID technology uses radio waves to transmit information between a tag, antenna, reader, and computer database.

Open Ended

Do you really need an RFID wallet? (Give a one-sentence justification for your answer.)

Multiple Choice

Which medical imaging technique uses radio waves to create detailed images of the inside of the body?

• CT scan

• MRI scan

• Ultrasound

• X-ray

Multiple Choice

What is the frequency range of microwaves?

• 300 kHz to 3 MHz

• 3 GHz to 30 GHz

• 300 MHz to 300 GHz

• 30 MHz to 300 MHz

Multiple Select

Which of the following are true about microwaves?

• They have longer wavelengths than radio waves

• They are used in MRI scans

• They have frequencies between 300 MHz and 300 GHz

• James Clerk Maxwell contributed to their discovery

Fill in the Blank

Who discovered microwaves?

Open Ended

Explain how microwaves are used in communication devices and television broadcasting.

Multiple Choice

Which of the following is always a transverse wave?

• Sound waves

• Water waves

• Electromagnetic waves

• Earthquake waves

Open Ended

Reflecting on today's lesson about the regions of the electromagnetic spectrum and their uses, what is one new thing you learned that surprised you or changed your understanding?