Electricity at home and staying safe

Tests: 9 of 13 right · Exam: 3 of 4 right · Kind: plain · Understood: 10 of 17 · Run: 2026-10-18, commit f3c23ea72

Lesson 87 of the world 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.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · right ✓

A house is far from a power station. Which is the right order of the electricity's journey?

1. Power station, pylons, substation, home — ← Mova's choice · ✓ the right answer · no support
2. Substation, power station, home, pylons — no support
3. Home, substation, pylons, power station — no support
4. Pylons, home, substation, power station — no support

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

Test 2 · wrong ✗

The lights go out after someone plugs in a broken toaster. What most likely happened?

1. The power station has closed for the night — ← Mova's choice · no support
2. The meter has run out of numbers to count — no support
3. A circuit breaker cut off the power — ✓ the right answer · no support
4. The bulbs all broke at exactly the same time — no support

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

Test 3 · right ✓

Which is the safest thing to do in a bathroom?

1. Plug a radio in beside the bath — no support
2. Use a hair dryer while sitting in a warm bath — no support
3. Touch the light switch with wet hands — no support
4. Keep electrical things away from the water — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask which statement is true. It chose option 4 with score 7, the only option with support. Its support: lesson 87, line 4: «Mains electricity can kill. Keep water away from plugs and sockets, never use a cable that is cracked or frayed, never climb pylons or go into substations, and…», reached through the remembered sentence the question matched. What matched: the same action «keep away» (+4); the same property (+2); the same thing acted on «water» (+1). · the question and its options parsed, with trees and pragmatics

Test 4 · right ✓

A boy's football lands inside a fenced electricity substation. What should he do?

1. Use a metal pole to drag it out — score 3
2. Wait until dark and then fetch it — no support
3. Climb the fence quickly to get it back — score 1
4. Leave it and ask an adult to call the electricity company — ← Mova's choice · ✓ the right answer · score 7

Why: It took the question to ask what is done. It chose option 4 with score 7, against 3 for the next best. Its support: lesson 77, line 5: «Leave a slice of bread in a warm, damp place and in a few days fuzzy spots of mould appear — spores from the air landed on it and the fungus grew by feeding on…», reached through the remembered sentence the question matched. What matched: it fills the role the question asks for (+5); the same action «leave» (+3). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 5 · wrong ✗

A family's electricity bill is very high in winter. What is most likely using the most?

1. A small radio in the kitchen — ← Mova's choice · no support
2. LED lights in every room — no support
3. Electric heaters — ✓ the right answer · no support
4. A doorbell by the front door — no support

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

Test 6 · right ✓

Why is a frayed cable dangerous?

1. Bare wires can give a shock or start a fire — ← Mova's choice · ✓ the right answer · score 5
2. It makes the plug keep falling out of the socket — no support
3. It uses up far too much electricity every hour — no support
4. It makes the device too slow to warm up properly — no support

Why: It took the question to ask why something happens (its cause). It chose option 1 with score 5, the only option with support. Its support: lesson 87, line 13: «A cracked or frayed cable can give an electric shock.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «electric shock» (+3); the same action «give» (+1); a different doer (counts against) (+1). · the question and its options parsed, with trees and pragmatics

Test 7 · right ✓

Which is true about helping someone who is getting an electric shock?

1. You must cut the power before touching them — ← Mova's choice · ✓ the right answer · score 5
2. You should pour water on them to cool them — no support
3. You should leave them alone until it stops — no support
4. You should grab them quickly with both hands — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 5, the only option with support. Its support: lesson 87, line 5: «If someone is getting an electric shock, do not touch them, or the electricity can pass into you too. First switch off the power at the main switch, then call…», reached through the same lesson line as the sentence the question matched. What matched: the same action «switch off» (+3); the same thing acted on «power» (+2). · the question and its options parsed, with trees and pragmatics

Test 8 · right ✓

Grandma has one socket and wants to plug in a heater, a kettle and a toaster at once with adapters. What is the danger?

1. The kettle will boil more slowly — no support
2. Nothing, sockets can take any amount — no support
3. The toaster will make the heater turn cold instead — no support
4. The wires could overheat and start a fire — ← Mova's choice · ✓ the right answer · score 3

Why: It took the question to ask what it is done to. It chose option 4 with score 3, the only option with support. Its support: lesson 87, line 12: «Plugging too many things into one socket can overheat the wires and cause a fire.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+3); the same thing acted on «fire» (+2). Against it: a different action (counts against) (-1); a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 9 · wrong ✗

Which of these is a safe place to play?

1. The yard of an electricity substation — ← Mova's choice · no support
2. Beside a fallen power cable — no support
3. A park far from overhead power lines — ✓ the right answer · no support
4. A field under high voltage power lines — no support

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

Test 10 · right ✓

kite's stuck near the power lines, can i get it down

1. Yes, if you wear rubber shoes — no support
2. Yes, if you use a long stick to reach it — no support
3. No, never fly or fetch a kite near power lines; tell an adult — ← Mova's choice · ✓ the right answer · score 5
4. Yes, if the kite string is dry — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, the only option with support. Its support: lesson 87, line 4: «Mains electricity can kill. Keep water away from plugs and sockets, never use a cable that is cracked or frayed, never climb pylons or go into substations, and…», 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

Test 11 · wrong ✗

why'd all the power go off when we plugged in the heater and kettle

1. The power station turned off our house on purpose — ← Mova's choice · no support
2. The kettle and heater cancel each other out — no support
3. A fuse or circuit breaker cut off the power because too much flowed — ✓ the right answer · no support
4. The heater sucked all the power out of the house — no support

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

Test 12 · right ✓

Mia says it's fine to touch a switch with wet hands if u're quick. true?

1. Yes, being really quick keeps you safe from any shocks — no support
2. No, but it is fine with damp hands — no support
3. No, water and electricity are dangerous together — ← Mova's choice · ✓ the right answer · score 5
4. Yes, but only with light switches — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, the only option with support. Its support: lesson 87, line 15: «Water and electricity are dangerous together, so wet hands must never touch plugs or switches.», reached through a sentence linked to the one the question matched. What matched: the same doer «water» (+2); the same property (+2); the same light verb (be, have, do, get, go) (+1). · the question and its options parsed, with trees and pragmatics

Test 13 · right ✓

a video said u should grab someone getting a shock to pull them off. right?

1. No, throw water on them first — no support
2. No, switch off the power first before touching them — ← Mova's choice · ✓ the right answer · score 6
3. Yes, but use both hands to pull hard — no support
4. Yes, pull them off as quickly as you can before it gets worse — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 6, the only option with support. Its support: lesson 87, line 5: «If someone is getting an electric shock, do not touch them, or the electricity can pass into you too. First switch off the power at the main switch, then call…», reached through the same lesson line as the sentence the question matched. What matched: the same action «switch off» (+3); the same thing acted on «power» (+2); the same property (+1). · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Which of the following statements most accurately characterises the function of a fuse or circuit breaker?

1. It measures the electrical energy a home uses — ← Mova's choice · no support
2. It cuts off the electricity if too much flows — ✓ the right answer · no support
3. It lowers the voltage before electricity enters a home — no support
4. It increases the electricity supplied to a home — no support

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

Exam question 2 · formal language · right ✓

Identify the function of a substation.

1. It lowers the voltage before electricity goes to homes — ← Mova's choice · ✓ the right answer · no support
2. It manufactures electricity from wind — no support
3. It stores electricity for use at night — no support
4. It raises the voltage for use in homes — no support

Why: Nothing it remembers matched the question, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · right ✓

It is given that a person is receiving an electric shock. Ascertain the action which must be taken first.

1. Pour water upon the person at once — no support
2. Pull the person away with wet hands — no support
3. Seize the person firmly by the hand forthwith and pull — no support
4. Switch off the power before touching the person — ← Mova's choice · ✓ the right answer · score 5

Why: It took the question to ask which statement is true. It chose option 4 with score 5, the only option with support. Its support: lesson 87, line 5: «If someone is getting an electric shock, do not touch them, or the electricity can pass into you too. First switch off the power at the main switch, then call…», reached through the same lesson line as the sentence the question matched. What matched: the same action «switch off» (+3); the same thing acted on «power» (+2). · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · right ✓

Select the response that is consistent with the established facts concerning the plugging of many devices into one socket.

1. It is the safest manner of using a socket — no support
2. It can overheat the wires and cause a fire — ← Mova's choice · ✓ the right answer · score 4
3. It has no effect upon the wires whatsoever — no support
4. It reduces the electricity used by each device — no support

Why: It took the question to ask which statement is true. It chose option 2 with score 4, the only option with support. Its support: lesson 87, line 12: «Plugging too many things into one socket can overheat the wires and cause a fire.», reached through the same lesson line as the sentence the question matched. What matched: the same action «overheat» (+3); the same thing acted on «wires» (+2). Against it: a different doer (counts against) (-1). · the question and its options parsed, with trees and pragmatics

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