首頁 >> 國際學校課程 >> A level課程>>正文
CAIE AS物理11月補考注意新增和刪減了哪些知識點
時間:2022-08-10
來源:網絡
作者:未知
CAIE劍橋考試局網站發布了新的考試大綱(2022-2024),適用于2022、2023和2024年的考試,包括5-6月夏季以及10-11月秋季考試季。同時適用于印度卷(3月考試季)
因此明年即將參加夏季考試的同學們就要參考2022-2024最新的考試大綱了。今天帶大家解讀ALevel物理(9702)AS部分2022新大綱的一些變化。
和我們2019-2021的舊大綱相比,刪減了一小部分內容,同時增加了一些新的知識點,新增的全新知識點是Polarisation(偏振)。
對于10-11月參加AS補考的同學來說,我們需要了解考綱的變化。

ALevel物理
(9702)
AS部分
2022新大綱的變化
■ 4.3 Density and pressure
6 calculate the upthrust acting on an object in a fluid using the equation F = ρgV (Archimedes’ principle)在密度和壓強部分,新增加了Upthrust計算公式,這里需要進一步理解到upthrust=ρgV=weight of fluid displaced,也就是等于排開液體的重力。2 understand and use the terms load, extension, compression and limit of proportionality除了舊大綱要求的elastic limit之外,新大綱明確要求掌握limit of proportionality。■ 7.4 Electromagnetic spectrum3 recall that wavelengths in the range 400–700 nm in free space are visible to the human eye電磁波這部分雖然我們在往常學習的時候要求掌握各個波段wavelength的大致范圍,新大綱明確了人眼能看到的可見光波段:400-700nm。
1 understand that polarisation is a phenomenon associated with transverse waves2 recall and use Malus’s law (I = I0 cos2θ ) to calculate the intensity of a plane polarised electromagnetic wave after transmission through a polarising filter or a series of polarising filtersWaves波這一部分新增加了polarisation,波的偏振現象,以及Malus's law公式的理解和計算。以往的劍橋考試局ALevel部分對polarisation不做要求。其他的考試局像Edexcel是要考察偏振的。這部分內容的增加,讓學生從更多的方面來理解光波。
■ 9.3 Resistance and resistivity4 explain that the resistance of a filament lamp increases as current increases because its temperature increases8 understand that the resistance of a thermistor decreases as the temperature increases (it will be assumed that thermistors have a negative temperature coefficient)電學部分,以往對filament lamp和thermistor電阻隨溫度的變化是需要掌握的,能夠運用resitance和溫度的變化趨勢來解釋某個電路中power、resistance等等變化。不過并沒有在大綱里明確寫明這兩條要求。■ 7 understand that the resistance of a light-dependent resistor (LDR) decreases as the light intensity increases新增加了光敏電阻LDR的resistance隨光照強度的變化規律。■ 10.3 Potential dividers3 understand the use of a galvanometer in null methods4 explain the use of thermistors and light-dependent resistors in potential dividers to provide a potential difference that is dependent on temperature and light intensity早年一點的歷年題有關于a galvanometer in null methods的計算題和選擇題,在新大綱中新明確了對這個點的掌握要求。熱敏和光敏電阻要求掌握在potential divider中的應用,這很明顯是簡答題的考察。■ 11.1 Atoms, nuclei and radiation10 understand that α-particles have discrete energies but that β-particles have a continuous range of energies because (anti)neutrinos are emitted in β-decay11 represent α- and β-decay by a radioactive decay equation of the form12 use the unified atomic mass unit (u) as a unit of massParticle這部分要求掌握alpha particle所具有的能量是不連續的,而β粒子的能量是連續的。關于11和12兩條內容授課均有講述,這次在新大綱中做了明確的要求。■ 11.2 Fundamental particles2 recall and use the charge of each flavour of quark and understand that its respective antiquark has the opposite charge (no knowledge of any other properties of quarks is required)4 understand that a hadron may be either a baryon (consisting of three quarks) or a meson (consisting of one quark and one antiquark)基本粒子部分新增了meson;需掌握hadron可以是baryon,也可以是meson,meson是由一個quark和一個antiquark組成的。既可以是定義題,也可以是簡答和計算。
■ 17 Electric fields
17.1 Concept of an electric field
a) understand the concept of an electric field as an example of a field of force and define electric field strength as force per unit positive charge acting on a stationary point charge
b) represent an electric field by means of field lines
17.2 Uniform electric fields
a) recall and use E=ΔV/Δd to calculate the field strength of the uniform field between charged parallel plates in terms of potential difference and separation
b) calculate the forces on charges in uniform electric fields
c) describe the effect of a uniform electric field on the motion of charged particles
AS物理之前有對Electric field的要求,17.1和17.2是舊大綱需要學生掌握的知識點,由于A2還會繼續深入講解關于電場的內容,可能是由此考慮,2022新大綱將電場部分的內容移動到A2部分學習。

版權及免責聲明
① 本網站注明"來源:朗思教育"的所有文字、圖片和音視頻稿件,版權均屬杭州朗思教育咨詢有限公司所有,任何媒體、網站或個人未經本網協議授權不得轉載、鏈接、轉貼或以其他任何方式復制、發表。已獲得本網站授權的媒體、網站,在使用時必須注明"來源:朗思教育",違者本網將依法追究法律責任。
②
本網未注明"來源"的文/圖等稿件均為轉載稿,本網轉載僅基于傳遞更多信息之目的,并不意味著贊同轉載稿的觀點或證實其內容的真實性。如其他
媒體、網站或個人從本網下載使用,必須征得原稿件作者同意,如果存在侵權等行為,與本網站無關。
③ 如本網轉載稿涉及版權等問題,請作者及時與我們聯系,郵箱:cxpp1991@qq.com。