The Solar System
Gbogbo ọrọ náà
Day and night, the march of the seasons, the changing face of the Moon: the great rhythms of the sky all come from a few simple motions. The Earth spins, the Earth orbits the Sun, and the Moon orbits the Earth, and from those three facts the whole pattern follows.
In this lesson you will use the Earth's tilted spin to explain day and night and the apparent motion of the Sun, its yearly orbit to explain the seasons, the Moon's monthly orbit to explain its phases, and the orbital-speed equation to calculate how fast a body moves around its orbit.
Ebumnobi
- Know that the Earth is a planet that rotates on its axis, which is tilted, once in approximately 24 hours, and use this to explain observations of the apparent daily motion of the Sun and the periodic cycle of day and night
- Know that the Earth orbits the Sun once in approximately 365 days and use this to explain the periodic nature of the seasons
- Know that it takes approximately one month for the Moon to orbit the Earth and use this to explain the periodic nature of the Moon’s cycle of phases
- [Supplement] Define average orbital speed from the equation 2π r v = T where r is the average radius of the orbit and T is the orbital period; recall and use this equation
Nkuzi Olu
Gee ntị na nkuzi a na ngwa
Kaadị ncheta
Omume ncheta ngwa ngwa n'ihe a na-anwale n'isiokwu a.
Mee omume kaadị ndị a na ngwa
Akwụkwọ Ọmụmụ
Ndetu Nkuzi Zuru Ezu di na Ngwa Green Bridge
Nweta ngwa Green Bridge CBT na ekwenti gi ma o bu kompiuta maka ulo akwukwo IGCSE zuru oke: akwukwo ule ndi gara aga, usoro nyocha, eserese uche, kaadi omumu na nkuzi olu.
Nnyocha Ọmụmụ
Ekele diri gi maka imecha ihe karịrị na The Solar System. Ugbu a na ị na-enyochakwa isi echiche na echiche ndị dị mkpa, ọ bụ oge iji nwalee ihe ị ma. Ngwa a na-enye ụdị ajụjụ ọmụmụ dị iche iche emebere iji kwado nghọta gị wee nyere gị aka ịmata otú ị ghọtara ihe ndị a kụziri.
Ị ga-ahụ ngwakọta nke ụdị ajụjụ dị iche iche, gụnyere ajụjụ chọrọ ịhọrọ otu n’ime ọtụtụ azịza, ajụjụ chọrọ mkpirisi azịza, na ajụjụ ede ede. A na-arụpụta ajụjụ ọ bụla nke ọma iji nwalee akụkụ dị iche iche nke ihe ọmụma gị na nkà nke ịtụgharị uche.
Jiri akụkụ a nke nyocha ka ohere iji kụziere ihe ị matara banyere isiokwu ahụ ma chọpụta ebe ọ bụla ị nwere ike ịchọ ọmụmụ ihe ọzọ. Ekwela ka nsogbu ọ bụla ị na-eche ihu mee ka ị daa mba; kama, lee ha anya dị ka ohere maka ịzụlite onwe gị na imeziwanye.
- Day and night are caused by the Earth: A. orbiting the Sun B. rotating on its axis C. tilting its axis D. moving towards the Sun Answer: B
- The seasons are mainly caused by: A. the Earth's distance from the Sun changing B. the tilt of the Earth's axis C. the Moon's orbit D. the Sun moving Answer: B
- The Moon takes approximately how long to orbit the Earth? A. one day B. one week C. one month D. one year Answer: C
- A body orbits at radius r with period T. Its orbital speed is: A. r/T B. 2 pi r / T C. pi r^2 / T D. T / r Answer: B
- A satellite orbits at r = 7.0 x 10^6 m with T = 6000 s. Its speed is about: A. 1200 m/s B. 7300 m/s C. 44000 m/s D. 73000 m/s Answer: B
Rue ajuju ndi a n'ime ngwa ahu
Rue ajuju ndi a n'ime ngwa ahu
Akwụkwọ A Na-atụ Aro
Meecha Ajụjụ Ule Ọmarịcha
Ị chọrọ ime ajụjụ ule ọmarịcha gbasara The Solar System? Budata ngwa Green Bridge CBT iji nweta ajụjụ ule ọmarịcha na nyocha zuru ezu gbasara isiokwu a.
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