The Earth And The Solar System Continued
Bayani Gaba-gaba
The Sun holds more than 99 percent of the mass of the Solar System, and that vast mass is what keeps eight planets, countless asteroids and long-tailed comets sweeping around it. The same gravity that gives you weight on Earth reaches across hundreds of millions of kilometres to hold whole worlds in orbit.
In this topic you will learn what controls a planet's gravitational field strength, calculate how long light takes to cross the Solar System, and see why the Sun's gravity keeps the planets in orbit. You will also explore how orbital speed changes with distance from the Sun and use conservation of energy to explain why a comet races when it is close to the Sun.
Manufura
- Know that the strength of the gravitational field (a) at the surface of a planet depends on the mass of the planet (b) around a planet decreases as the distance from the planet increases
- Calculate the time it takes light to travel a significant distance such as between objects in the Solar System
- Know that the Sun contains most of the mass of the Solar System and this explains why the planets orbit the Sun
- Know that the force that keeps an object in orbit around the Sun is the gravitational attraction of the Sun
- [Supplement] Know that the strength of the Sun’s gravitational field decreases and that the orbital speeds of the planets decrease as the distance from the Sun increases
- [Supplement] Know that an object in an elliptical orbit travels faster when closer to the Sun and explain this using the conservation of energy
Takardar Darasi
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Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Nazarin Darasi
Barka da kammala darasi akan The Earth And The Solar System Continued. Yanzu da kuka bincika mahimman raayoyi da raayoyi, lokaci yayi da zaku gwada ilimin ku. Wannan sashe yana ba da ayyuka iri-iri Tambayoyin da aka tsara don ƙarfafa fahimtar ku da kuma taimaka muku auna fahimtar ku game da kayan.
Za ka gamu da haɗe-haɗen nau'ikan tambayoyi, ciki har da tambayoyin zaɓi da yawa, tambayoyin gajeren amsa, da tambayoyin rubutu. Kowace tambaya an ƙirƙira ta da kyau don auna fannoni daban-daban na iliminka da ƙwarewar tunani mai zurfi.
Yi wannan ɓangaren na kimantawa a matsayin wata dama don ƙarfafa fahimtarka kan batun kuma don gano duk wani yanki da kake buƙatar ƙarin karatu. Kada ka yanke ƙauna da duk wani ƙalubale da ka fuskanta; maimakon haka, ka kallesu a matsayin damar haɓaka da ingantawa.
- The gravitational field strength at the surface of a planet depends on the planet's: A. colour B. mass C. number of moons D. temperature Answer: B
- Light takes about how long to travel from the Sun to the Earth? A. 8 seconds B. 8 minutes C. 8 hours D. 8 days Answer: B
- The planets orbit the Sun because of: A. magnetic attraction B. the Sun's gravitational attraction C. the solar wind D. air resistance Answer: B
- As distance from the Sun increases, the orbital speed of a planet: A. increases B. decreases C. stays the same D. becomes zero Answer: B
- A comet in an elliptical orbit moves fastest when it is: A. farthest from the Sun B. closest to the Sun C. at constant distance D. outside the Solar System Answer: B
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
Akwai a cikin manhajar Green Bridge
Zazzage manhajar Green Bridge CBT a wayar ka ko kwamfyuta ka don samun cikakkiyar bayanan darasi, tambayoyin aiki, da ƙari.
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Yi Aikin Tambayoyin Gwaji
Kana son yin aikin tambayoyin gwaji kan The Earth And The Solar System Continued? Sauke manhajar Green Bridge CBT don samun tambayoyin gwaji da cikakkun jarrabawa akan wannan batu.
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