Maqalka dhawaaqa

Cashar 1 / 5

Eeg cutubka Casharka xiga →U eeg sida ardayga →

Muuqaalka casharka

Muuqaalku weli diyaar ma aha.

Bogagga casharka

weli lama diyaarin

Faahfaahinta casharka

Natiijada casharka

I can explain how sound waves cause sounds to be heard, and describe the range and limits of human hearing.

Muuji qoraalka

Sound waves cause our eardrums, tiny bones within our ears, and the cochlea to vibrate. Specialised cells in the cochlea sense vibrations and cause electrical signals to be sent to the brain along a nerve. The brain creates the sensation of hearing a sound when it receives signals from the ear through a nerve. Human ears can detect sound waves with frequencies between 20 Hz and 20 kHz, being most sensitive to 2–5 kHz waves. Sound waves below 20 Hz are called infrasound; above 20 kHz, ultrasound. They are not detected by human ears.

Warqadda shaqada

weli lama diyaarin

Imtixaannada

1. Mid ka mid ah kuwan soo socda ayaa qeexaya walxaha (particles) hawada marka aan lahayn mowjad dhawaq (sound wave) oo dhex maraysa?
- Ma dhaqaaqayaan.
- Jawaabta saxda ah:Waxay u dhaqaaqayaan si aan kala sooc lahayn (random).
- Waxay u dhaqaaqayaan dib iyo hor.
2. Maxaa ku dhaca walxaha (particles) ee hawada marka mowjadda dhawaaqa (sound wave) ay dhex marto?
- Waxay u dhaqaaqaan si aan kala sooc lahayn, laakiin xawaare ka badan.
- Waxay u safraan jihada mowjadda dhawaaqa.
- Jawaabta saxda ah:Waxay gariiraan, laakiin sidoo kale waxay leeyihiin dhaqdhaqaaq aan kala sooc lahayn.
3. Mid ka mid ah kuwan soo socda ayaa ah sharaxaadda ugu saxda ah ee mowjadda dhawaaqa (sound wave)?
- gudbinta tamarta (energy) meel ilaa meel kale
- dhaqdhaqaaqa qaar ka mid ah walxaha (particles) dhex mara walax
- dhaqdhaqaaqa walax meel ilaa meel kale
- Jawaabta saxda ah:qaab soo noqnoqda oo ah garaacyo (pulses) ku dhex safraya walax
4. Ereyada soo socda, kee ayaa loo isticmaali karaa in lagu qeexo gobol mowjadda dhawaaqa (sound wave) oo ay qaybihiisu isku dhow yihiin si ka badan caadiga ah?
- Jawaabta saxda ah:cufis (compression)
- dhexdhexaad (medium)
- codka sare (pitch)
- dhererka mowjadda (wavelength)
5. Waxaa la sameeyaa dhawaq aad u weyn, markaas mawjadda dhawaqa (sound wave) waxay ku dhacdaa baal yar oo ka laadlaadaya xadhig. Maxaa ku dhaca baalka?
- Jawaabta saxda ah:Wuu gariirayaa.
- Wuxuu u dhaqaaqayaa xagga meesha dhawaqa ka yimid.
- Wuxuu ka dhaqaaqayaa meesha dhawaqa ka yimid.
6. Kee ka mid ah weedhahan ku saabsan mowjadaha dhawaaqa (sound waves) waa sax?
- Waa mowjado transverse (transverse waves).
- Jawaabta saxda ah:Waa mowjado longitudinal (longitudinal waves).
- Qaybaha waxay gariiraan 90° dhanka jihada safarka mowjada.
- Qaybaha waxay gariiraan si barbarsooc ah dhanka jihada safarka mowjada.

1. Kee ka mid ah weedhahan ku saabsan mowjadda dhawaaqa (sound wave) waa sax?
- Jawaabta saxda ah:Waa qaabka gariirka walxaha (particles).
- Waa dareenka maqalka wax.
- Waxay mari kartaa gaasaska, laakiin ma mari karto dareeraha ama adkaha.
2. Dhinaca soo socda, inta jeer ee mowjadda dhawaaqa (sound wave frequency) ay dhegta bini'aadamku ugu xasaasisan tahay waa kee?
- 20 Hz
- 800 Hz
- Jawaabta saxda ah:3000 Hz
- 12 000 Hz
- 25 000 Hz

Waxa ardaydu arkaan

Tan waa isla casharka sida ardaygu u arko. Waxaad qayb kasta u dirsan kartaa ardayda.

HordhacDiyaargarow · Ma diyaarsana
Imtixaanka bilowgaXusuusi · 6 su'aalood
Muuqaalka casharkaBaro · Ma diyaarsana
Imtixaanka dhamaadkaHubi · 2 su'aalood

Nuxurkan waxaa leh Cashar, waxaana lagu daabacay shatiga furan.