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CBSE Class 5 · Science

Earth — Our Shared Home

Official NCERT chapter from Our Wondrous World (book code eeev1). ExamMaster notes are original teaching at CBSE Class 5 depth.

This lesson follows the official chapter “Earth — Our Shared Home” in Our Wondrous World. The words below are ExamMaster’s teaching, not a paste from the book. Use the NCERT chapter for the classroom sequence; use these notes to hold the idea without copying exercises or figures.

  • CBSE Class 5
  • Easy level
  • 8 concepts

1From space the Earth looks one blue planet

A space photo shows one ball with blue seas and swirling white. That looking is the evidence for “one planet”.

A classroom globe is a model of that looking, not a second Earth.

Figure. From far away the planet is one body: land patches on a water-blue disk. The school picture is that shared disk, not a political map.

How it works

  1. See a space photo or a trusted image of oneThe looking.
  2. Name one ballThe planet.
  3. Do not add a second Earth because the classroom has a globeModel versus planet.

2No border is visible from outside

Country lines you draw on a map do not appear as cracks on the planet in a space photo. Borders are human map-marks.

Treating a map line as a canyon is a miss.

Figure. A view from outside shows land and sea. It does not show a country line. If you need a border, you are no longer looking from space.

How it works

  1. See the space lookingSeas, clouds, land.
  2. See a political mapLines.
  3. Keep lines as map-marks, not planet-cracksTwo pictures.

3Land masses and seas are the broad shapes

From far away you can name large land and large sea. That is a broad-shape record, not a street address.

A space photo will not show your house.

Figure. The broad shapes on that disk are land masses and seas. Cities and countries are later names we print on maps, not what the disk shows.

How it works

  1. Name a broad land or sea you can see in the photoIf you can.
  2. Keep it broadNot a street.
  3. Do not invent a house in the cloudsScale.

4Your address sits on that shared planet

Your home is a place on the same ball. Shared means one planet, many addresses — not “no home”.

A space photo does not erase your street; it just cannot show it.

Figure. Your address is nested: home inside a town inside a country inside the same planet everyone else is already on.

How it works

  1. Name your place at a humble scaleThis town, this country.
  2. Say it sits on the same planetOne ball.
  3. Keep both scalesAddress and planet.

5People, plants, and ideas travel and mix

Food plants, stories, and people can move. Mix is a travel-record, not a slogan that erases homes.

One spice that came from elsewhere is a finished case.

Figure. People, plants and ideas move between places on the same planet. The arrows are travel, not a new Earth.

How it works

  1. Name one thing that travelledA food plant, a story, a person you know of.
  2. Keep it as a mix-recordOne case.
  3. Do not claim every thing mixedKeep the scale.

6Looking records from space are evidence, not a cartoon

A photo or a described looking is evidence. A cartoon Earth with a smiling face is not the record.

Write what the photo can show.

Figure. A space photograph is a record of land and water. A cartoon is a story someone drew. Keep the claim on the record.

How it works

  1. Use a looking recordPhoto or described image.
  2. Name what it actually showsBall, blue, clouds.
  3. Leave cartoon faces offEvidence.

7Keep the claim at what a photo from space can show

“I see one ball and clouds” is a claim. “I see every country line” is too big for that photo.

One honest looking is enough.

Figure. A photo from space can show water, land and cloud. A country name is a map word. Do not read the name off the photograph.

How it works

  1. State what the photo showsThis looking.
  2. Refuse what it cannot showStreets, map-lines as cracks.
  3. StopNo extra tale.

8A miss: treating a country line as a crack in the planet

A map line is ink. The planet’s surface does not split there. The miss is mixing the two pictures.

Peel the ink; keep the ball.

Figure. A country line is a dashed mark we print on a map. It is not a crack in the planet. The land under it is continuous.

How it works

  1. See a map lineInk.
  2. See the space lookingNo crack there.
  3. Call the mix a missLine ≠ canyon.
Country borders in a space photo are
  1. Not visible as cracks — they are map-marks
  2. Canyons
  3. A weave

Two pictures: map ink versus planet looking.

Notes

  • Mapped to the official NCERT chapter “Earth — Our Shared Home”. Original teaching only — no textbook sentences.
  • Science here is Physics, Chemistry and Biology ideas at this class, never a language or social-science chapter.

Recap

Hold these pegs from the official chapter “Earth — Our Shared Home”. The wording is ExamMaster’s teaching, not a textbook recap.

From space the Earth looks one blue planet
A space photo shows one ball with blue seas and swirling white.
No border is visible from outside
Country lines you draw on a map do not appear as cracks on the planet in a space photo.
Land masses and seas are the broad shapes
From far away you can name large land and large sea.
Your address sits on that shared planet
Your home is a place on the same ball. Shared means one planet, many addresses — not “no home”.
People, plants, and ideas travel and mix
Food plants, stories, and people can move.
Looking records from space are evidence, not a cartoon
A photo or a described looking is evidence.

Practise Earth — Our Shared Home

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  • A 4-question practice set that ends the chapter
  • 1 quick check with worked explanations
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