የ12ኛ ክፍል ውጤት ወጥቷል፤ ውጤትዎን የሚያዩበት መንገድ

የምዕራፍ ማስታወሻዎችና የመልመጃ ጥያቄዎች

የ11ኛ ክፍል ጂኦግራፊ ምዕራፍ 1

በዚህ ገጽ ያለው ሁሉ ለ11ኛ ክፍል የጂኦግራፊ መፅሐፍ ምዕራፍ 1 ነው፦ ምዕራፉ የሚሸፍነው፣ አጭር ማስታወሻዎቹ፣ የመልመጃ ጥያቄዎች ከመልሶቻቸው ጋር፣ እና ቪዲዮ ባለበት የትምህርቱ ቪዲዮ።

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የምዕራፍ 1 የመልመጃ ጥያቄዎች
1–26
የምዕራፍ 1 የመፅሐፍ ገጾች

ምዕራፍ 1 የሚሸፍነው

  1. 1.Formation of the continents and oceans
  2. 2.Geological timescale
  3. 3.Distribution of the continents and oceans
  4. 4.Changing position of the continents and oceans

የምዕራፍ 1 አጭር ማስታወሻዎች

በ11ኛ ክፍል የጂኦግራፊ ገጽ ላይ በዚህ ምዕራፍ ሥር የተመዘገቡት ካርዶች። አንድ በአንድ ይክፈቱ።

ሥነ-ምድራዊ ዘመን (Era)የጊዜ ርዝማኔ (በሚሊዮን ዓመታት)ዋና ዋና ክስተቶች እና ሕይወት
Precambrian4500−6004500 - 600መሬት ረጋች፣ በጣም ጥንታዊ አለቶች ተፈጠሩ፣ basement complex እና shields ተፈጠሩ
Paleozoic600−250600 - 250ጥንታዊ ህይወት፣ trilobites፣ የአሳዎች ዘመን፣ በመጨረሻው Pangaea supercontinent ተፈጠረ
Mesozoic250−70250 - 70የdinosaurs ዘመን፣ የመጀመሪያዎቹ አጥቢዎች እና አዕዋፋት፣ Pangaea ወደ Laurasia እና Gondwanaland ተከፋፈለ
Cenozoic70−070 - 0የአጥቢዎች እና የዘመናዊ የሰው ልጆች ዘመን፣ orogenic folding፣ አህጉራት የአሁኑን አቀማመጣቸውን ያዙ

መቼ እንደሚጠቀሙበት

የምድርን ታሪክ በዋና ዋና ዘመናት ለመመደብ እና እያንዳንዱን ዘመን ከተከሰቱት የሕይወት ዓይነቶች ጋር ለማዛመድ ይጠቀሙበት።

ይጠንቀቁ

ፓንጂያ የተፈጠረው በፓሊዮዞይክ ዘመን መጨረሻ ሲሆን፤ መከፋፈል የጀመረው ግን በሜሶዞይክ ዘመን ነው።

ከGrade 11 Geography፣ ገጽ 2-27 የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

ውቅያኖስበስፋት ደረጃጥልቁ ቦታከፍተኛ ጥልቀት
Pacific Ocean (ፓሲፊክ ውቅያኖስ)1ኛMariana Trench (Challenger Deep)10924 m10924\text{ m}
Atlantic Ocean (አትላንቲክ ውቅያኖስ)2ኛPuerto Rico Trench8605 m8605\text{ m}
Indian Ocean (የህንድ ውቅያኖስ)3ኛJava Trench (Sunda Trench)7258 m7258\text{ m}
Southern Ocean (ደቡባዊ ውቅያኖስ)4ኛSouth Sandwich Trench7235 m7235\text{ m}
Arctic Ocean (አርክቲክ ውቅያኖስ)5ኛNansen Basin (Central Basin)4665 m4665\text{ m}

መቼ እንደሚጠቀሙበት

አምስቱን ውቅያኖሶች በስፋት ደረጃቸው ለማነጻጸር እና ጥልቅ ቦታዎቻቸውን ለመለየት ይጠቀሙበት።

ይጠንቀቁ

ደቡባዊ ውቅያኖስ ከፓሲፊክ፣ አትላንቲክ እና ህንድ ውቅያኖስ የተከፋፈለ ሲሆን፤ አራተኛው ትልቅ እንጂ ትንሹ ውቅያኖስ አይደለም።

ከGrade 11 Geography፣ ገጽ 2-27 የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

መርህዋና ሕግ
Original HorizontalityየSedimentary ንጣፎች በመጀመሪያ በgravity ምክንያት ወደ አግድም በተጠጋ ሁኔታ ይቀመጣሉ።
Superpositionያልተረበሹ የrock layers ውስጥ፣ ከላይ ያለው ንጣፍ ከታች ካለው ንጣፍ ይልቅ younger ነው።
Cross-cutting Relationshipsሌላውን ቆርጦ የሚያልፍ የrock layer ወይም igneous intrusion ከተቆረጠው rock ይልቅ younger ነው።

መቼ እንደሚጠቀሙበት

የደለል ድንጋይ ንጣፎችን እና ወደ ውስጥ የገቡ ዐለቶችን ቅደም ተከተል ለመወሰን ይጠቀሙበት።

ይጠንቀቁ

የሱፐርፖዚሽን መርህ የሚሠራው ባልተዛቡ የድንጋይ ንጣፎች ላይ ብቻ ነው። የታጠፉ ወይም የተገለበጡ ንጣፎች ላይ የታችኛው ድንጋይ ሁልጊዜ አንጋፋ ላይሆን ይችላል።

ከGrade 11 Geography፣ ገጽ 2-27 የተዘጋጀ፤ ከመውጣቱ በፊት ሁለት ጊዜ ተረጋግጧል

የምዕራፍ 1 የመልመጃ ጥያቄዎች

በዚህ ምዕራፍ ላይ የተጻፉ 10 የምርጫ ጥያቄዎች፣ እያንዳንዳቸው መልሱና ምክንያቱ አላቸው። መልሱን ከመክፈትዎ በፊት ይሞክሩ። ጥያቄዎቹ በእንግሊዝኛ ናቸው።

ጥያቄ 1

According to the textbook, about how many billion years ago was the Earth formed from gas and dust particles around the Sun?

  1. A.2.5 billion years ago
  2. B.3.5 billion years ago
  3. C.4.5 billion years ago
  4. D.10.0 billion years ago
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ C 4.5 billion years ago

ምክንያቱ

The Earth was formed from a mixture of gas and dust particles moving in space around the Sun about 4.5 billion years ago.

ጥያቄ 2

Which geological principle states that in an undisturbed sequence of sedimentary rock layers, the overlying bed is younger than the underlying rock?

  1. A.Principle of original horizontality
  2. B.Principle of superposition
  3. C.Principle of cross-cutting relationships
  4. D.Principle of radioactive decay
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ B Principle of superposition

ምክንያቱ

The principle of superposition asserts that in undisturbed rock layers, older rocks lie at the bottom and younger rocks lie on top.

ጥያቄ 3

Which continent is the only one in the world crossed by the equator, the Tropic of Cancer, and the Tropic of Capricorn?

  1. A.Asia
  2. B.South America
  3. C.Africa
  4. D.Australia
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ C Africa

ምክንያቱ

Africa is the second largest continent and the only continent crossed by all three lines: the equator, the Tropic of Cancer, and the Tropic of Capricorn.

ጥያቄ 4

Which ocean contains the Challenger Deep inside the Mariana Trench, which is the deepest point in the world?

  1. A.Atlantic Ocean
  2. B.Indian Ocean
  3. C.Pacific Ocean
  4. D.Arctic Ocean
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ C Pacific Ocean

ምክንያቱ

The Pacific Ocean is the largest ocean and contains the Challenger Deep within the Mariana Trench at a depth of about 10,924 meters.

ጥያቄ 5

During radioactive decay, what percentage of the original parent isotope remains after two half-lives have passed?

  1. A.50%
  2. B.25%
  3. C.12.5%
  4. D.75%
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ B 25%

ምክንያቱ

After one half-life, 50% of the parent isotope remains. After two half-lives, the remaining parent amount is halved again to 25%.

ጥያቄ 6

What is the ratio of land to ocean in the Northern Hemisphere compared to the Southern Hemisphere?

  1. A.1:1.5 in the Northern Hemisphere and 1:4 in the Southern Hemisphere
  2. B.1:4 in the Northern Hemisphere and 1:1.5 in the Southern Hemisphere
  3. C.1:2 in the Northern Hemisphere and 1:3 in the Southern Hemisphere
  4. D.1:1 in the Northern Hemisphere and 1:5 in the Southern Hemisphere
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A 1:1.5 in the Northern Hemisphere and 1:4 in the Southern Hemisphere

ምክንያቱ

The ratio of land to ocean is about 1:1.5 in the Northern Hemisphere and 1:4 in the Southern Hemisphere.

ጥያቄ 7

According to the textbook, at about what time did the supercontinent Pangaea divide into Gondwanaland and Laurasia?

  1. A.At about 750 Ma
  2. B.At about 390 Ma
  3. C.At about 160 Ma
  4. D.At about 65 Ma
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ C At about 160 Ma

ምክንያቱ

At about 160 Ma, Pangaea divided into two large landmasses called Gondwanaland and Laurasia through continental drift.

ጥያቄ 8

What does the principle of cross-cutting relationships state about rock layers?

  1. A.Sediments are always deposited horizontally under gravity.
  2. B.A rock layer that cross-cuts another rock layer is younger than the rock it cuts.
  3. C.The bottom layer of sedimentary rock is always the oldest.
  4. D.Unstable parent isotopes decay into stable daughter isotopes at a constant rate.
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ B A rock layer that cross-cuts another rock layer is younger than the rock it cuts.

ምክንያቱ

The principle of cross-cutting relationships states that any feature or intrusion that cuts across another rock layer must be younger than the rock it cuts.

ጥያቄ 9

In the geological timescale, which period of the Paleozoic era was rich in fish species and is often called the age of fish?

  1. A.Cambrian
  2. B.Silurian
  3. C.Devonian
  4. D.Permian
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ C Devonian

ምክንያቱ

The Devonian period, the fourth period of the Paleozoic era, was rich in fish species and is referred to as the age of fish.

ጥያቄ 10

Which radioactive parent isotope converts into Argon-40 (40Ar) with a half-life of 1.25 billion years?

  1. A.Potassium-40 (<sup>40</sup>K)
  2. B.Rubidium-87 (<sup>87</sup>Rb)
  3. C.Uranium-235 (<sup>235</sup>U)
  4. D.Carbon-14 (<sup>14</sup>C)
መልሱንና ምክንያቱን ያሳዩ

መልስ፦ A Potassium-40 (<sup>40</sup>K)

ምክንያቱ

Potassium-40 (40K) decays into Argon-40 (40Ar) with a half-life of 1.25 billion years.

መተግበሪያው በዚህ ምዕራፍ ላይ 12 ጥያቄዎች አሉት፤ እየሠሩ ያርምዎታል። እዚህ ያሉት የመጀመሪያዎቹ 10 ናቸው።

የምዕራፍ 1 የመፅሐፍ ገጾች

ምዕራፍ 1 በየትምህርት ሚኒስቴር እትም ከገጽ 1 እስከ ገጽ 26 ይደርሳል።

የትምህርት ሚኒስቴር እትም, እንግሊዝኛ, 254 ገጾች

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ሁሉም የ11ኛ ክፍል ጂኦግራፊ አጭር ማስታወሻዎች

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