---
title: Living with friction: oil, wheels and grip — the lesson's questions with trees and pragmatics · Physics
description: The 14 test and exam questions of lesson 7 «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school, each with its options, Mova's choice and the right answer, every sentence with its dependency tree and pragmatics.
---

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# Living with friction: oil, wheels and grip

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The 14 questions of lesson 7 «Living with friction: oil, wheels and grip» of the physics course of Mova's primary school with their options, 73 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/physics/7-living-with-friction/).

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- [t1](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t1/) — What would a day with no friction at all be like? — wrong ✗ · ★
- [t2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t2/) — argh this jar won't open, any tips?? — wrong ✗ · ★
- [t3](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t3/) — My mate says a spacecraft glows only cos it rubs on the air. right? — wrong ✗ · ★
- [t4](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t4/) — Why would a gymnast with sweaty hands be in danger on the bars? — wrong ✗ · ★
- [t5](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t5/) — In a cartoon a cat slides across the kitchen on a banana skin. Why is a banana skin slippery? — right ✓ · ★
- [t6](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t6/) — You must move a heavy fridge across a room. Which helps most? — wrong ✗ · ★
- [t7](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t7/) — Why does a fisherman wet his hands before holding a fish? — right ✓ · ★
- [t8](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t8/) — What would happen to a car engine with no oil? — right ✓ · ★
- [t9](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t9/) — wheels spinning and screaming, what should the driver do? — right ✓ · ★
- [t10](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/t10/) — Why do skateboards spin for ages but an old cart wheel creaks to a stop? — right ✓ · ★
- [e1](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/e1/) — Which of the following statements most accurately characterises the function of lubricating oil in a hinge? — right ✓ · exam
- [e2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/e2/) — Identify the principal advantage of a wheel over a sledge for the conveyance of heavy loads. — wrong ✗ · exam
- [e3](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/e3/) — It is given that two books are interleaved page by page. Ascertain the reason for which they resist separation. — wrong ✗ · exam
- [e4](https://md.mova.elamur.ai/free/en/corpora/questions/physics/7-living-with-friction/e4/) — Determine the consequence for ordinary human activity of the total absence of friction. — wrong ✗ · exam

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