--- title: Electricity dangers: sockets, water, chargers and batteries — how Mova does on the tests · Technology description: Lesson 16 of the technology course of Mova's primary school: 8 of 11 tests right, exam 1 of 4, every question with the options, the student's choice, the right answer and why it chose. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/school-run/technology/16-electricity-dangers/) [home](https://md.mova.elamur.ai/free/en/) / [at school](https://md.mova.elamur.ai/free/en/school-run/) / [Technology](https://md.mova.elamur.ai/free/en/school-run/technology/) / 16 # Electricity dangers: sockets, water, chargers and batteries **Tests:** 8 of 11 right · **Exam:** 1 of 4 right · **Kind:** ★★ · **Understood:** 10 of 15 · **Run:** 2026-10-18, commit `f3c23ea72` Lesson 16 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/16-electricity-dangers/). 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/16-electricity-dangers/). ### Test 1 · ★★ · wrong ✗ {#t1} my mate says it's fine to poke a socket if the switch is off. true? - **1.** Yes, an off switch makes it totally safe, so poke away — **← Mova's choice** · score 6 - **2.** No, never put anything into a socket at all — **✓ the right answer** · score 4 - **3.** Yes, if you use a plastic pen — no support - **4.** No, but a metal key is fine — no support **Why:** It took the question to ask which statement is true. It chose option 1 with score 6, against 4 for the next best. Its support: lesson 11, line 3: «Many of them have a clever little switch that decides when to stop, like the click you hear when the kettle has boiled.», reached through the remembered sentence the question matched. What matched: the same thing acted on «clever little switch» (+4); the same circumstance (+4). Against it: a different action (counts against) (-2). The right option, 2, scored 4. · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t1/) ### Test 2 · ★★ · right ✓ {#t2} In a cartoon a kite gets stuck on a power line and a boy climbs the pylon to get it. Real rule? - **1.** Leave it and tell an adult; never climb a pylon — **← Mova's choice** · **✓ the right answer** · score 8 - **2.** Pull the string hard to free it — no support - **3.** Climb, but wear rubber boots — no support - **4.** Throw stones at it until it falls down off the wire — no support **Why:** It took the question to ask which statement is true. It chose option 1 with score 8, the only option with support. Its support: lesson 16, line 17: «Never climb a pylon or into an electricity substation, even for a ball, and never touch a fallen wire; the power company gets things out safely.», reached through the remembered sentence the question matched. What matched: the same action «climb» (+4); the same thing acted on «pylon» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t2/) ### Test 3 · ★★ · right ✓ {#t3} just plug the heater into the extension with the TV and the lamps, whatever. Is that ok? - **1.** No, high-power things like heaters don't go into extensions — **← Mova's choice** · **✓ the right answer** · no support - **2.** No, but the kettle can go there instead, kettles are much safer — no support - **3.** Yes, extensions can take anything — no support - **4.** Yes, if the heater is small — 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](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t3/) ### Test 4 · ★★ · right ✓ {#t4} What would happen if a frayed cable's live wire touched you? - **1.** You would just feel a little tickle — no support - **2.** It would charge your body like a battery — no support - **3.** Nothing, cables are always off — no support - **4.** Electricity could pass through you and hurt or kill you — **← Mova's choice** · **✓ the right answer** · score 0 **Why:** It took the question to ask what happens next. It chose option 4 with score 0, the only option with support. Its support: lesson 16, line 9: «Never touch switches with wet hands or use plugged-in devices near a bath or sink, and never touch someone who is being shocked; shout for an adult to switch t…», reached through what followed the sentence the question matched. What matched: the same circumstance (+4). Against it: a different action (counts against) (-2); 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/16-electricity-dangers/t4/) ### Test 5 · ★★ · wrong ✗ {#t5} Ruby's e-scooter battery is hot and smells funny. What should she do? - **1.** Put it in the fridge for an hour to cool it down — **← Mova's choice** · no support - **2.** Poke a hole in it to let the funny gas out — no support - **3.** Tell an adult and keep away from it — **✓ the right answer** · no support - **4.** Keep riding it and see if the smell stops — 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](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t5/) ### Test 6 · ★★ · right ✓ {#t6} Jack says the button battery in the remote is dead, so it can't hurt a baby. Right? - **1.** No, even a flat one can burn a baby's throat — **← Mova's choice** · **✓ the right answer** · score 6 - **2.** No, it's only brand-new ones that are dangerous to babies — no support - **3.** Yes, flat batteries are harmless — no support - **4.** Yes, they turn to sugar when empty — no support **Why:** It took the question to ask which statement is true. It chose option 1 with score 6, the only option with support. Its support: lesson 16, line 14: «A swallowed button cell battery can burn a child's throat within hours, even if it seems flat, so a child who may have swallowed one goes to hospital at once.», reached through the remembered sentence the question matched. What matched: the same action «burn» (+4); the same thing acted on «throat» (+4). 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/16-electricity-dangers/t6/) ### Test 7 · ★★ · wrong ✗ {#t7} crap, the hairdryer fell in the sink and it's still plugged in! What now? - **1.** Don't touch it; get an adult to switch the power off — **✓ the right answer** · no support - **2.** Grab it out quick — no support - **3.** Pull the cable out of the water — **← Mova's choice** · score 4 - **4.** Pour the water out of the sink fast, then unplug it yourself — score 4 **Why:** It took the question to ask which statement is true. It chose option 3 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 15, line 13: «An iron stays hot long after it is switched off, and a dangling cable can be pulled so that the iron falls.», reached through a sentence linked to the one the question matched. What matched: the same action «pull» (+2); the same thing acted on «dangling cable» (+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/16-electricity-dangers/t7/) ### Test 8 · ★★ · right ✓ {#t8} Which is true about birds on power lines? - **1.** The birds have special rubber feet — no support - **2.** They are safe because they touch only one wire and not the ground — **← Mova's choice** · **✓ the right answer** · score 12 - **3.** Power lines carry no electricity at all — no support - **4.** Electricity cannot travel through animals — no support **Why:** It took the question to ask which statement is true. It chose option 2 with score 12, the only option with support. Its support: lesson 16, line 16: «Birds can sit on a power line because they touch only one wire and not the ground.», reached through the remembered sentence the question matched. What matched: the same action «touch» (+4); the same doer «birds» (+4); the same thing acted on «one wire» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t8/) ### Test 9 · ★★ · right ✓ {#t9} Max wants to put outdoor lights round the tree using his indoor fairy lights. Should he? - **1.** No, because outdoor lights are too bright — no support - **2.** Yes, if it doesn't rain much — no support - **3.** No, indoor lights are never used outdoors — **← Mova's choice** · **✓ the right answer** · score 10 - **4.** Yes, they are all the same — no support **Why:** It took the question to ask which statement is true. It chose option 3 with score 10, the only option with support. Its support: lesson 16, line 19: «Christmas and fairy lights are checked for damage, switched off at night, and indoor lights are never used outdoors.», reached through the remembered sentence the question matched. What matched: the same action «use» (+4); the same thing acted on «indoor lights» (+4); the same property (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t9/) ### Test 10 · ★★ · right ✓ {#t10} A fallen wire lies across the path after a storm. What do you do? - **1.** Pick it up and hang it back — score 6 - **2.** Keep well away and tell an adult to call the power company — **← Mova's choice** · **✓ the right answer** · score 9 - **3.** Step over it carefully — no support - **4.** Move it aside with a stick — no support **Why:** It took the question to ask what is done. It chose option 2 with score 9, against 6 for the next best. Its support: lesson 12, line 12: «An iron's element heats the base plate and a thermostat holds it at the setting; steam helps the cloth fibres relax and lie flat.», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same action «hold» (+4). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t10/) ### Test 11 · ★★ · right ✓ {#t11} The cheap charger from a market stall gets very hot. Why is that a worry? - **1.** Cheap chargers charge too fast just for fun — no support - **2.** It only means it works well and fills your phone up quicker — no support - **3.** Fake chargers can skip safety parts and start fires — **← Mova's choice** · **✓ the right answer** · score 8 - **4.** Hot chargers make phones waterproof — no support **Why:** It took the question to ask why something happens (its cause). It chose option 3 with score 8, the only option with support. Its support: lesson 16, line 12: «Chargers and batteries get warm; under a pillow or duvet the heat cannot escape, so phones are charged on a hard surface with a proper charger; cheap fake char…», reached through a sentence linked to the one the question matched. What matched: the same action «skip» (+3); the same thing acted on «safety parts» (+3); the same doer «cheap fake chargers» (+2). · [the question and its options parsed, with trees and pragmatics](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/t11/) ### Exam question 1 · formal language · wrong ✗ {#e1} Identify the principal reason for which mains electricity presents a danger to life whereas a torch battery does not. - **1.** The human body conducts only battery electricity — **← Mova's choice** · no support - **2.** The mains voltage is greater by a very large factor — **✓ the right answer** · no support - **3.** The mains supply consists of alternating light — no support - **4.** The battery contains no electrical energy — 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](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/e1/) ### Exam question 2 · formal language · wrong ✗ {#e2} It is given that a young child may have ingested a button cell battery. State the appropriate course of action. - **1.** The child is to be observed for some days — **← Mova's choice** · no support - **2.** No action is required if the battery was flat or of small size — no support - **3.** The child is to be taken to hospital immediately — **✓ the right answer** · no support - **4.** The child is to be given water and put to bed — 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](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/e2/) ### Exam question 3 · formal language · wrong ✗ {#e3} Which of the following statements most accurately characterises the hazard of an overloaded socket? - **1.** The socket may cease to supply any electricity — **← Mova's choice** · no support - **2.** The appliances may operate at reduced brightness — no support - **3.** The socket may emit a poisonous gas — no support - **4.** Excessive current may cause the wiring to overheat — **✓ the right answer** · 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](https://md.mova.elamur.ai/free/en/corpora/questions/technology/16-electricity-dangers/e3/) ### Exam question 4 · formal language · right ✓ {#e4} Select the response consistent with the established facts concerning a bird perched upon a power line. - **1.** Birds are too small to conduct electricity — no support - **2.** It touches a single conductor and not the ground — **← Mova's choice** · **✓ the right answer** · score 3 - **3.** Power lines are de-energised for the passage of birds — no support - **4.** Feathers render all birds immune to electricity — no support **Why:** It took the question to ask which statement is true. It chose option 2 with score 3, the only option with support. Its support: lesson 16, line 16: «Birds can sit on a power line because they touch only one wire and not the ground.», reached through a sentence linked to the one the question matched. What matched: the same action «touch» (+2); the same doer «birds» (+2). Against it: 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/16-electricity-dangers/e4/) - ← previous: [15. Kitchen and garden dangers](https://md.mova.elamur.ai/free/en/school-run/technology/15-kitchen-and-garden-dangers/) - next →: [17. Inside a car: engine, gears and the dashboard](https://md.mova.elamur.ai/free/en/school-run/technology/17-inside-a-car/) - ↑ back to [Technology](https://md.mova.elamur.ai/free/en/school-run/technology/)