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Twelfth Grade (Grade 12) Science Questions

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Grade 12 Physics
What happens to the radio signal as it travels over long distances and loses strength?
  1. Interference
  2. Modulation
  3. Attenuation
  4. Frequency shift
Grade 12 Physics
Which of the following technologies is used in 5G networks to increase data speed and reduce latency?
  1. Millimeter waves
  2. Microwaves
  3. Sound waves
  4. Infrared waves
Grade 12 Physics
What is the process of switching from one cell tower to another while moving?
  1. Modulation
  2. Encryption
  3. Handover
  4. Attenuation
Grade 12 Physics
Which component of a cell phone converts voice into digital signals?
  1. Antenna
  2. Microphone
  3. Speaker
  4. Battery
Grade 12 Physics
In which communication medium does signal attenuation occur more frequently?
  1. Fiber-optic cables
  2. Coaxial cables
  3. Wireless transmission
  4. Ethernet cables
Grade 12 Physics
What is the primary benefit of using fiber-optic cables for internet data transmission?
  1. They are more durable than copper cables
  2. They can transmit data using light waves at very high speeds
  3. They are cheaper than traditional cables
  4. They are more prone to signal interference
Grade 12 Taxonomy
What is the definition of taxonomy?
  1. science of classifying and naming organisms
  2. grouping organisms according to structural and evolutionary similarities
  3. history of the evolution of organisms (tree diagram)
  4. method of biologically naming organisms created by Carl Linneaus
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