Visual Communication
According to the text, what sense does visual communication rely on?
What is sight?
According to the text, what sense does auditory communication rely on?
What is sound?
This early communication method used pigeons to carry written messages across battlefields.
What are carrier pigeons?
Change this sentence to present perfect: "Soldiers use drums to communicate."
What is: "Soldiers have used drums to communicate."
Change this sentence to past tense: "Soldiers use drums to send messages."
What is: "Soldiers used drums to send messages."
Name one early form of visual communication mentioned in the text.
What are flags? (Accept: signals, hand movements, lights)
Name two early forms of auditory communication mentioned in the text.
What are drums and horns?
This device used flashes of sunlight reflected from a mirror to send Morse code messages over long distances.
What is a heliograph?
Fill in the blank with the correct present perfect form: "Communication methods _______ (evolve) dramatically over time."
What is "have evolved"?
Fill in the blank with the correct past tense form: "The general _______ (give) the order, and the troops _______ (advance) immediately."
What is "gave" and "advanced"?
The text mentions two limitations of using flags. What are they?
What are: (1) difficult to see in bad weather or at night, and (2) messages could be misunderstood if signals were unclear?
The text mentions two limitations of drums and horns. What are they?
What are: (1) signals could not be heard during battles, and (2) messages could be misunderstood?
Name two of the three following early technologies: semaphore, electric telegraph, or field telephone.
What are (any two): semaphore, electric telegraph, field telephone?
Identify the mistake and correct it: "The general has gave the order to attack at dawn."
What is: "The general has given the order to attack at dawn"? (Change gaveto given)
Identify the two mistakes and correct them: "The carrier pigeon flyed over the battlefield and bringed a message to the commander."
What is: "The carrier pigeon flew over the battlefield and brought a message to the commander"? (Change flyed to flew; change bringed to brought)
According to the text, what was the main advantage of more detailed signalling systems (like coded lights or hand movements), and what was their disadvantage?
What is: Advantage — they could convey more information quickly and efficiently; Disadvantage — they required training to understand and depended on clear visibility?
During World War II, what device did paratroopers use to identify friend from foe in the dark, and what was its nickname?
What are small metal clickers called "crickets"?
This modern technology allows commanders to see real-time video from the sky without putting a pilot in danger.
What is an unmanned aerial vehicle (UAV)? (Accept: drone)
Create a present perfect sentence using the words: "our army / never / intercept / an enemy signal"
What is: "Our army has never intercepted an enemy signal." (Accept minor variations.)
Rewrite this present tense paragraph in past tense: "The soldier hears a strange sound. He picks up his radio. He calls for backup."
What is: "The soldier heard a strange sound. He picked up his radio. He called for backup."
The text ends with a question: "How much has the improvement of communication shaped the outcomes of conflicts throughout history?" Based on the text, provide two pieces of evidence that support the idea that visual communication improved conflict outcomes.
*What are: (1) Flags allowed groups to coordinate actions across battlefields where voices could not be heard; (2) More advanced signalling systems improved accuracy and reduced confusion during fast-moving situations?* (Accept any two valid pieces of evidence from the text.)
The text states two advantages of radio communication and two disadvantages. Name one advantage and one disadvantage.
What is: Advantage — speed and/or secrecy (messages sent and received instantly across great distances); Disadvantage — radio signals could be intercepted and/or codes could be broken by the enemy? (Accept any correct combination.)
This advanced system blocks or disrupts enemy radio signals, preventing them from communicating with their troops.
What is a software-defined radio signal jammer? (Accept: radio signal jammer or signal jammer)
Explain the difference in meaning between these two sentences:
A) "The soldier used a drone."
B) "The soldier has used a drone."
What is: Sentence A (simple past) means the action happened at a specific time in the past and is finished. Sentence B (present perfect) means the action happened at an unspecified time in the past and may have relevance to the present (e.g., he now knows how to use it). (Accept a simpler explanation such as: "A tells us when it happened. B tells us it happened sometime before now.")
Explain the difference between regularand irregular past tense verbs. Give one example of each from this unit.
What is: Regular verbs add -ed to form the past tense (e.g., use → used, advance → advanced, coordinate → coordinated). Irregular verbs change in other ways (e.g., give → gave, speak → spoke, fly → flew, bring → brought).(Accept any correct examples.)