PlanetEARTH

You’re

here

3rd planet

from the

Sun.

5th largest

planet in

the Solar

System.

Mercury

Venus

Mars

Earth

Largest among the

inner planets.

Known as:

Blue Planet

World

Planet Earth

Blue Marble

Tidal Theory

Planetisimal Theory

Dynamic Encounter Theory

Condensation Theory

Big Bang Theory

Big Bang Theory

•The Universe originated in

an enormous explosion.

•Our universe came into

existence because of a

SOLAR NEBULA.

SOLAR

NEBULAA huge spinning cloud made up

of dust particles and various

types of hot gases.

Solar Nebula began its contraction about

4.6 billion years ago probably because

of shock wave caused by an explosion in

the nearby region. During the contraction

process, its temperature came down and

it began to rotate very fast. As a result of

cooling, shrinking and faster rotation the

gas cloud began to collapsed.

The outer part of the gas cloud

detached from the main body thus,

creating our solar system. The dense

cloud heated up and pulled toward

the center to form the Sun. Other

particles within the cloud collided and

stuck together to form ever-larger

bodies including the Earth.

-Earth’s earliest period

Pre-Cambrian Period

HADEAN

PeriodARCHEA

N

Period

PRETEROZOI

C

Period

HADEAN Period

• Hadean derived from

“Hades”.

•1st billion years of

Earth’s Formation.

•“Hellish Period”

•Remnants of the dust

and debris.

•Atmosphere:

•Couldn’t settle to

form surface water.

•Poisonous for

living organisms.

ARCHEAN

Period• Earth’s surface

began to cool down

and stabilize.

•Solid surface and

water.

•Period where 1st life

began to appear.

•Landmasses began

to form.

PROTEROZOIC

Period

• larger continental

landmasses continued

to form by the

accretion of the

smaller ones.

•Free oxygen

-Evident Life

Phanerozoic Period

Paleozoic

PeriodMesozoic

Period

Cenozoic

Period

Six EPOCHS

Holocene Period

PALEOZOIC

Period

• animals and plants in

the seas and land.

“Age

of the

Dinosaurs”

MESOZOI

C

Period

CENOZOI

C

Period

• Age of mammals.

•Period we are in.

Holocene/ Anthropocene

Period

“Age of Man”

•Cluster

- groups of galaxies held

together by mutual gravitational

attraction

•Supercluster

- Large groups of smaller

galaxy groups and clusters

SHAPE

“OBLATE SPHERIOD”

MASS

•5.9736 x 1024 Kg

•5,973,600,000,000,000,000,000,000 kg

Chemical Composition

34.6 % Fe

29.5 % O

15.2 % Si

12.7 % Mg

1.9 % S

0.05 % Ti

others

Inner Structure•CRUST

-Earth’s outermost and

thinnest layer.

-5 km thick(Ocean); 30 km

thick(Continents).

•MANTLE

- Hot, semisolid rock, located

directly below the Crust.

- 2900 km thick

•CORE

Outer Core- liquid layer

Inner Core – solid layer

Earth’s Atmosphere

Atmosphere is very important to

life on Earth and does many things to

help protect life:

•Big blanket of Insulation

•Keeps the overall temperature of the

Earth fairly steady.

•Absorbs Sun’s radiation.

Earth’s atmosphere is

divide into 5 major layers

TR P SO PO HERE

•Lowest layer of Earth’s atmosphere

•Layer next to the ground

•30,000- 50,000 ft.high.

•The layer where we live and even where planes fly.

•Almost all weather occurs within this layer

ST A OT SR HERE

•Layer that gets its heat by the ozone layer

absorbing the radiation from the Sun.

•160,000 ft.high.

• second layer

P

MESOS HERE

•Layer where most meteors burn up upon entry.

•Coldest place in the Earth’s atmosphere

•Weather Balloons and jet planes cannot

fly high enough to reach this layer

P

•164,040 ft

TH R OM SE HEREP

•Space shuttle and international space station

orbits here

•The air here is very thin

•Extends 90 km to 50-100 km above our planet

E OX S HEREP

•Outermost layer of the Earth

•Last and thinnest layer

•Its density is so low that particles collide rarely,

making it possible for energetic particles to

escape Earth’s gravity.

Earth’s surface is covered with water having an area of

361,800,00 sq.km (70 %) and 148,300,000 sq.km (30%) land

taken up by the 7 continental landmasses.

Did you know that…

250 million years ago , most of the

land was connected in one large

landmass collectively known as

supercontinent called “PANGAEA”-

“all lands”.

PANGAEA•Covers 1/3 of the Earth’s

surface.

•The term began being

used in the early 20th

century after Alfred

Wegener noticed that the

Earth’s continents looked

like they fit together like a

jigsaw puzzle.

Break-Up

before after

The reason for the SEASONS

1. The Earth is tilted.

- as it makes its yearly journey

around the Sun.

2. The Earth’s tilt.

- The Earth’s axis is tilted at an

angle of 23.5 degrees.

In astronomy, a satellite is a natural body that

revolves around a planet and is also called MOON.

In Aerospace and Space Exploration, a satellite is a

man-made object launched into space to orbit the

Earth, moon and other celestial bodies.

Most important satellites orbiting Earth now

Hubble Space Telescope

Galaxy 14

GOES-12

The Moon

KH-13

GPS IIR11

International Space Station

NOOAA 17

LANDSAT 7

Hubble Space Telescope

Galaxy 14

Moon

GOES-12

KH-13 GPS IIR11

ISSNOAA-17

LAND SAT 7

The reason for the SEASONS

Rotation an Axis

- 24 hours

- 23 hours & 56 minutes and 04.09053

seconds Revolution around the Sun

-365 days

-365.2425 days

Earth’s Circumference at the Equator

- 40,075.16 km

Earth’s diameter at the Equator

-12,756.1 km

Average distance from the Earth to the

Sun

- 149,669,180 km Average distance from the Earth to the

Moon

- 384,403.1 km

Life

Water

Geologically Active

Size

TRIVIA

• Earth’s Population:

- 7,039,191,305

• Earth’s Highest & Lowest Point:

- Mt.Everest

- Marianas Trench

• Earth’s coldest part:

-Antarctica

• Earth’s symbol:

• Earth’s age:

- 4.6 Billion years old

GLOBAL WARMING

END

Reported by:

Sharmaine Tiu

Gabrielle Tiamson

BEED IV