Unit 3 Practice

What are the two types of broadcast radio?

• AM and FM

• AM and PM

• FM and PM

• AM and EM

Tags

8.PS4.3

Why do AM radio waves travel further at night?

• Because the ionosphere disappears at night

• Because FM radio waves bounce off the ionosphere at night

• Because the sun gives off more radiation at night

• Because the wavelength of AM radio waves is longer

Tags

8.PS4.3

Why can FM radio only be picked up within line-of-sight of the broadcast tower?

• Because FM radio waves are absorbed by the ionosphere

• Because FM radio waves are too short to travel long distances

• Because FM radio waves are blocked by buildings and obstacles

• Because FM radio waves are only transmitted during the day

Tags

8.PS4.3

What is the main advantage of FM radio over AM radio?

• Higher quality transmission

• Longer range

• Lower frequency

• Better nighttime broadcasting

Tags

8.PS4.3

What is the main disadvantage of AM radio in terms of signal reception?

• AM radio is more susceptible to interference

• AM radio has a shorter range

• AM radio has a lower frequency

• AM radio has a narrower bandwidth

Tags

8.PS4.3

What is the primary factor that determines the range of an FM radio station?

• The height of the broadcast tower

• The frequency of the station

• The power of the transmitter

• The location of the listener

Tags

8.PS4.3

Which type of electromagnetic radiation has the shortest wavelength?

• Radio Waves
• Visible Light
• Microwaves
• Gamma Rays

Tags

NGSS.HS-PS4-1

Which type of electromagnetic radiation has the shortest wavelength?

• Radio Waves
• Visible Light
• Microwaves
• Gamma Rays

Tags

NGSS.HS-PS4-1

Which type of visible light has the highest energy?

• Red
• Yellow
• Green
• Violet

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which type of radiation has a frequency closest to 10⁵?

• Radio
• Infrared
• Ultraviolet
• X-Ray

Tags

NGSS.HS-PS4-1