Gudbiyeyaasha kulaylka

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I can use the idea of vibrating particles to explain heating by thermal conduction.

Muuji qoraalka

The temperature along a thermal conductor increases quickly when it is heated. The temperature along a thermal insulator increases very slowly when it is heated. In thermal conductors, vibrating particles quickly cause the particles near to them to vibrate as well. In thermal insulators, it is hard for vibrating particles to cause the particles near to them to vibrate as well.

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Imtixaannada

1. Waa kee walaxda (material) uu gudbiyo gariirka (vibration) si ugu dhakhsaha badan marka dhamaadka kale la ruxo?
- Jawaabta saxda ah:ul bir ah oo adag (stiff metal rod)
- xadhig dhererkiisu le'eg yahay
- xadhig laastik ah (elastic cord) oo dhererkiisu le'eg yahay
2. Maxay tahay sababta adkaha (solid) inta badan u noqdo mid adag oo aan la foorarsan karin?
- Jawaabta saxda ah:Sababtoo ah walxaha (particles) ku jira ayaa isku haya xoogag soo jiidasho oo xooggan.
- Sababtoo ah walxaha ayaa gariiraya.
- Sababtoo ah walxaha ayaa aad isugu dhow, badiyaa istaabanaya.
3. Maxay tahay sababta gacanta digsiyada (sauce pan) loo sameeyo qori ama balaastiig (plastic)?
- Qori iyo balaastiig waxay si dhakhso ah u kululaadaan.
- Jawaabta saxda ah:Qori iyo balaastiig waxay si gaabis ah u kululaadaan.
- Qori iyo balaastiig waxay ku gubaan ololka gaaska.
- Qori iyo balaastiig kuma gubaan ololka gaaska.
4. Waa maxay sababta salka digsiga (saucepan) inta badan looga sameeyo birta (metal)?
- Jawaabta saxda ah:Birtu waxay si dhakhso ah u kululaataa.
- Birtu waxay si gaabis ah u kululaataa.
- Birtu waxay ku gubataa ololka gaaska.
- Birtu kuma gubato ololka gaaska.
5. Waa maxay xaaladda maaddada (state of matter) ee ay walxuhu (particles) isku dhacaan ugu yar?
- xaaladda adag (solid state)
- xaaladda dareeraha (liquid state)
- Jawaabta saxda ah:xaaladda gaaska (gas state)
6. Maxaa dhacaya marka dhammaadka hal bir ah lagu kululeeyo ololka Bunsen?
- Dhammaadka kale wuxuu ku sii jiraa heerkulka qolka.
- Jawaabta saxda ah:Dhammaadka kale wuxuu sii kululaanayaa waqti ka dib.
- Dhammaadka kale wuxuu isla markiiba kululaanayaa.

1. Mid ka mid ah kuwan soo socda, kee aad u qiyaasi lahayd inuu yahay gudbiye kulayl (thermal conductor) wanaagsan?
- biyo
- balastiig
- Jawaabta saxda ah:bir
- qori
- hawo
2. Waxaa ka mid ah birahan, kee baa ugu fiican inuu kulaylka qaado (thermal conductor)?
- naxaas (copper)
- bir (iron)
- nikel (nickel)
- wax kala duwan ma jiro dhexdooda
- Jawaabta saxda ah:lama ogaan karo iyada oo aan la helin macluumaad dheeri ah
3. Maxaa ku dhacaya walxaha (particles) adkehu ka kooban yahay marka heerkulkiisa la kordhiyo?
- waxay yareeyaan cabirkooda
- Jawaabta saxda ah:waxay gariiraan si ka dhakhso badan
- waxay kordhiyaan cabirkooda
- waxay gariiraan si ka dhakhso badan oo kordhiyaan cabirkooda
4. Maxay tahay sababta adkaha (solids) ay u yihiin kuwa ugu wanaagsan inay kula kala baxaan kulaylka (thermal conductors) marka loo eego dareeraha (liquids)?
- adkaha, walxaha (particles) ayaa ka xoog badan
- adkaha, walxaha ayaa dhaqaaqa badan
- adkaha, walxaha ayaa aad isku dhow
- Jawaabta saxda ah:adkaha, walxaha waxay leeyihiin xoogag isjiidasho (forces of attraction) oo ka xoog badan

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