---
title: Phones and how a call travels — how Mova does on the tests · Technology
description: Lesson 35 of the technology course of Mova's primary school: 4 of 11 tests right, exam 2 of 4, every question with the options, the student's choice, the right answer and why it chose.
---

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# Phones and how a call travels

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**Tests:** 4 of 11 right · **Exam:** 2 of 4 right · **Kind:** ★ · **Understood:** 8 of 15 · **Run:** 2026-10-18, commit `f3c23ea72`

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Lesson 35 of the technology course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: [the lesson in the corpora](https://md.mova.elamur.ai/free/en/corpora/school/technology/35-phones-and-how-a-call-travels/).

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Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: [the lesson's questions in the corpora](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/).

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### Test 1 · ★ · right ✓ {#t1}

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«just texted while crossing, no biggie» What is the right rule?

- **1.** It is fine if you walk fast and look up every few seconds — no support
- **2.** It is fine if the message is short and you type with one hand — no support
- **3.** Never read or send messages while crossing a road — **← Mova's choice** · **✓ the right answer** · score 8
- **4.** It is fine if the road is quiet and there are no cars about — no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 8, the only option with support. Its support: lesson 35, line 11: «Never read or send messages while crossing a road.», reached through the remembered sentence the question matched. What matched: the same action «cross» (+4); the same thing acted on «road» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t1/)

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### Test 2 · ★ · wrong ✗ {#t2}

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«my mate says 5G is dangerous rays that make you ill» What is the best correction?

- **1.** Right, but only on Mondays — no support
- **2.** Right, 5G masts are poisonous — no support
- **3.** 5G uses X-rays to send messages — **← Mova's choice** · score 1
- **4.** At the levels used it is safe, with radio waves like Wi-Fi and TV — **✓ the right answer** · no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 1, the only option with support. Its support: lesson 35, line 11: «Never read or send messages while crossing a road.», reached through the option's own match among the sentences about the question's things. What matched: the same action «send» (+1); the same thing acted on «messages» (+1). Against it: a different doer (counts against) (-1). The right option, 4, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t2/)

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### Test 3 · ★ · right ✓ {#t3}

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«someone on the video call i don't know keeps asking where i live» What should you do?

- **1.** Tell them, they seem friendly — no support
- **2.** End the call and tell an adult — **← Mova's choice** · **✓ the right answer** · score 5
- **3.** Keep chatting and say nothing — no support
- **4.** Ask them where they live first — no support

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**Why:** It took the question to ask where. It chose option 2 with score 5, the only option with support. Its support: lesson 35, line 13: «Only video call people you know, and tell an adult if anyone online makes you uncomfortable.», reached through the same lesson line as the sentence the question matched. What matched: the same action «tell» (+3); the same receiver «adult» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t3/)

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### Test 4 · ★ · right ✓ {#t4}

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A friend falls off a wall, cannot move and is hurt badly. You have a phone with no credit. What do you do?

- **1.** Post a photo online — no support
- **2.** Call 999 or 112 and say clearly where you are — **← Mova's choice** · **✓ the right answer** · score 10
- **3.** Send a text to a friend first — score 8
- **4.** Wait until you can buy some credit at the shop, then call — score 7

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**Why:** It took the question to ask what is done. It chose option 2 with score 10, against 8 for the next best. Its support: lesson 35, line 3: «Each mast looks after a patch of land called a cell, which is why Americans say cell phone. Walk out of one cell and your call is quietly passed to the next ma…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+7); the same action «say» (+5). Against it: a different doer (counts against) (-2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t4/)

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### Test 5 · ★ · wrong ✗ {#t5}

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«shut up I'm calling 999 cos my brother nicked my crisps» What is right about the emergency number?

- **1.** It is fine after school hours — **← Mova's choice** · no support
- **2.** It is only for real emergencies — **✓ the right answer** · no support
- **3.** It is fine for any family fight — no support
- **4.** It is fine if he really nicked them — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t5/)

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### Test 6 · ★ · wrong ✗ {#t6}

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What would happen to a mobile call if all the phone masts in a town were switched off?

- **1.** Mobiles there could not make or receive calls — **✓ the right answer** · no support
- **2.** Calls would just be quieter — no support
- **3.** Phones would use the street lights instead — no support
- **4.** Calls would go straight from one phone to the other phone instead — **← Mova's choice** · score 2

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**Why:** It took the question to ask which statement is true. It chose option 4 with score 2, the only option with support. Its support: lesson 35, line 10: «A text message is sent to the network, stored and passed to the other phone when it can be reached; the first text, sent in 1992, said Merry Christmas.», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t6/)

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### Test 7 · ★ · wrong ✗ {#t7}

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Count them: on a walkie-talkie game, Sam says 3 messages and Lee says 4, each ending with over. How many times is over said?

- **1.** 12 — no support
- **2.** 3 — score 3
- **3.** 7 — **✓ the right answer** · no support
- **4.** 4 — **← Mova's choice** · score 6

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**Why:** It took the question to ask what it is done to. It chose option 4 with score 6, against 3 for the next best. Its support: lesson 25, line 17: «A bicycle has 2 wheels, a tricycle has 3, and a car has 4.», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+4); the same thing acted on «4» (+2). The right option, 3, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t7/)

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### Test 8 · ★ · wrong ✗ {#t8}

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Count them: a street has 2 phone masts and each mast has 3 antennas. How many antennas?

- **1.** 2 — **← Mova's choice** · no support
- **2.** 5 — no support
- **3.** 6 — **✓ the right answer** · no support
- **4.** 9 — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t8/)

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### Test 9 · ★ · wrong ✗ {#t9}

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In a cartoon, a voice travels down a wire as a little shouting man. What really travels?

- **1.** The words written on paper — **← Mova's choice** · no support
- **2.** Electric signals or numbers, not sound itself — **✓ the right answer** · no support
- **3.** A tiny copy of the person — no support
- **4.** Air blowing down the cable — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t9/)

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### Test 10 · ★ · wrong ✗ {#t10}

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«nan's in Australia, call takes ages to get there, like a minute right» What is true?

- **1.** The call gets there in a fraction of a second — **✓ the right answer** · no support
- **2.** It goes by post under the sea, so it takes about a week — no support
- **3.** It takes about an hour to go all the way round the world — **← Mova's choice** · score 6
- **4.** It takes about a minute, because Australia is so far away — no support

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 6, the only option with support. Its support: lesson 19, line 8: «A charging point sends electricity from the grid (the country's network of power lines) along a cable into the car's battery; a fast charger can add a lot of r…», reached through the remembered sentence the question matched. What matched: the same action «take» (+4); the same property (+2). The right option, 1, found no support in what it remembers. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t10/)

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### Test 11 · ★ · right ✓ {#t11}

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Why does a mobile call not cut out when you ride in a car through town?

- **1.** The call is passed from one mast to the next as you move — **← Mova's choice** · **✓ the right answer** · no support
- **2.** The phone stores the call until you stop — no support
- **3.** The car carries its own mast — no support
- **4.** The call stays with the very first mast all the way across the town — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/t11/)

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### Exam question 1 · formal language · wrong ✗ {#e1}

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Identify the principal means by which a mobile telephone communicates with the nearest mast.

- **1.** Light pulses transmitted through the window — **← Mova's choice** · no support
- **2.** Sound waves transmitted directly through the air to the top of the mast — no support
- **3.** Electric current conducted through the ground — no support
- **4.** Radio waves carrying the voice converted into numerical data — **✓ the right answer** · no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/e1/)

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### Exam question 2 · formal language · right ✓ {#e2}

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Select the response consistent with the established facts concerning the emergency telephone numbers in the United Kingdom.

- **1.** The emergency numbers operate solely from landline telephones — no support
- **2.** The emergency numbers require a minimum of one pound in credit — no support
- **3.** Both 999 and 112 connect the caller to an emergency operator, even in the absence of credit — **← Mova's choice** · **✓ the right answer** · score 1
- **4.** Only 911 connects the caller to an operator — score 1

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**Why:** It took the question to ask which statement is true. It chose option 3 with score 1, tied with another option at 1 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 35, line 15: «The emergency number, 999 in the UK and 112 across Europe and in the UK, connects you to an operator who sends police, fire, ambulance or coastguard; it works…», reached through the option's own match among the sentences about the question's things. What matched: the same circumstance (+2); the same action «connect» (+1). Against it: a different doer (counts against) (-1); a different thing acted on (counts against) (-1). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/e2/)

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### Exam question 3 · formal language · wrong ✗ {#e3}

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Ascertain the reason for which users of a walkie-talkie pronounce the word over.

- **1.** The word deactivates the apparatus — **← Mova's choice** · no support
- **2.** The word identifies the nearest telephone mast — no support
- **3.** The word conserves the charge of the battery — no support
- **4.** Only one party may transmit at a time, and the word signals the conclusion of a message — **✓ the right answer** · no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/e3/)

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### Exam question 4 · formal language · right ✓ {#e4}

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Which of the following statements most accurately characterises the function of the loudspeaker of a telephone?

- **1.** It reconverts electric signals into sound by the vibration of a small cone — **← Mova's choice** · **✓ the right answer** · no support
- **2.** It stores the voice for subsequent replay — no support
- **3.** It emits light by which the voice is transmitted — no support
- **4.** It converts the sound of the voice into numerical data for transmission by radio — no support

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**Why:** No option found support in what it remembers, so it guessed: it took the first option shown. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/35-phones-and-how-a-call-travels/e4/)

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- ← previous: [34. Batteries](https://md.mova.elamur.ai/free/en/school-run/technology/34-batteries/)
- next →: [36. Computers and screens](https://md.mova.elamur.ai/free/en/school-run/technology/36-computers-and-screens/)
- ↑ back to [Technology](https://md.mova.elamur.ai/free/en/school-run/technology/)