THE

EARTH IN

SPACE

Objectives:1. Know concepts about the Earth.

2. Discuss the different planets in the solar system.

3. Appreciate the importance of the sun in the every activity of the people on Earth.

4. Illustrate the importance of the sun to the Earth.

KEY CONCEPTS ABOUT

EARTH:

1. The Earth is a single system with four

dynamically interconnected ‘spheres’

2. The Earth works in a cycles

3. All parts of the Earth system are

constantly changing

4. Earth is dynamically part of the solar

system and beyond

5. Distance/ time scales the in Earth and

space systems vary greatly.

PLANETS IN THE SOLAR

SYSTEM

There are 8 major

planets in the solar

system which divided

into two- the Terrestrial

planet and the Jovian

planets

Terrestrial Planets

Are rocky planets

These are the

MERCU

RY

EARTH MARS

VENUS

Jovian Planets

Gaseous planets

These are:

SATURN NEPTUNE

URANUSJUPITER

Mercury

The closest planet to the sun

Is only bit larger than the Earth’s moon

Has no atmosphere to absorb meteor impacts

Name after messenger of the Roman gods

Mercurius

It has a diameter of 3,031 miles (4, 878 km)

One complete revolution is 88 Earth days

one complete rotation is 50 Earth days

Venus

Second planet from the sun

Is terribly hot

The atmosphere is toxic

The pressure at the surface would crush and kill you

Size and structure are similar to Earth

Named after the Roman goddess of love and beauty

Has a diameter of 7, 521miles (12, 104

km)

One complete revolution is 225 Earth

days

One complete rotation is 241 Earth

days

Earth

3rd planet from the sun

Is a water world

Only world known to harbour life

It’s atmosphere is rich in life- sustaining

nitrogen and oxygen

It’s diameter is 7, 926 miles

One complete revolution is 365.24 days

One complete rotation is 23 hours, 56

minutes

Mars

4th planet from the sun

Is a cold, dusty place

It is rocky, has mountains and

valleys, and storm systems ranging

from localized tornado-like dust

It’s atmosphere is too thin for liquid

water to exist on the surface for any

length of time

Named after the Roman god of war

Has a diameter of 4, 217 miles

One complete revolution is 687 Earth

days

One complete rotation is 24 hours 37

minutes and 23 seconds or the

Martian Day

Jupiter

1st Jovian planet

Largest planet in the solar system

Name after King of gods

It’s diameter is 143,800 km

It’s mean distance from the sun is 5.2

AU

One complete revolution is 11.867

years

One complete rotation 9.9 hours

Saturn

A magnificent or beautiful planet

Named after the ruler of gods of agriculture

2nd largest planet in terms of size, and mass

It’s density is ¼ of that water

One complete revolution is 30 years

One complete rotation is 10.7 hours

Uranus

The same size as Neptune

Named after Roman god of heavens

84 years revolved around the sun or the Uranian Year

Rotates 17 hour and 14 minutes

Has the longest season

It’s average distance from the sun is2.86 billion km

Methane in the atmosphere gives

Uranus it’s blue- green tint

It’s density is ¼ of that Earth

Neptune Is known for strong winds

Is far out and cold

Is more than 30 times as far from the sun as Earth

Has rocky core

Was the first planet predicted to exist by using math, before it was detected

Is about 17 times as massive as Earth

It was discover in the year 1846

Named after Roman god of water

It’s diameter is 30,775 miles ( 49,530

km)

Revolve around the sun for 165 Earth

years

Rotate for 19 Earth hours

Pluto

9th planet from the sun

Is unlike other planets in respect

Is smaller than our moon

In the year 1979 until early 1999, been an

8th planet from the sun

On Feb. 11, 1999, it crossed Neptune’s

path and once again became the distant

planet until it was demoted as dwarf

planet status

Was discovered in the year 1930 by

Clyde Tombaugh

Named after Roman god of the

underworld

It’s diameter is 1,430 miles or 2,301

km

Orbit around the sun for 248 Earth

years

Rotates for 6.4 Earth day

Important Things

the Sun Does the

Earth

Oops!

What is SUN first?

Sun?

The star that shines in the sky during day and gives the Earth heat and light

Is such a constant, reliable sight that few of us rarely acknowledge it’s existence

Is one of the primary

reasons that life exist on

Earth

It has hidden benefits that

prove it is a lot more than a

gigantic lamp that lights our

daily activities

Important things sun does

1. Food Energy Through the process of

photosynthesis

Sunlight provides the source of food for all life on Earth

2. Vitamin D

Is absorbed through the skin and

converted to a state that the body can use

Requires only 30 minutes of sunlight a day

to acquire a minimum dose

Is important in the creation and

maintenance of bones

3. Happiness

Studies that show that depression

occurs on people during the

change of seasons

Sunlight stimulates the pineal

gland deep in the brain

4. Warmth Life on planet would not be possible

without it that the sun provides

A combination of the radiant light of the sun creating direct warmth and the atmosphere retaining and distributing that heat allows plants and animals life to live on this planet

5. LightUse it to plant our crops, find

shelter from the predators of the night, and to pursue the things we enjoy most

In short, without the life giving light of the sun, we would be a species lost

In fact, we would not even exist

6. Precipitation If it were not for the sun evaporating

the water off of the bodies of water, we would not have the rain or snow as we know it

Without the sun, there would be droughts and most of the world would be a barren desert

Certainly,

The sun can cause harm. It is the most common source of skin cancer and has been known to prematurely age our skin. Yet these are small price to pay for the enormous benefits of sunlight provides.

Well !

The next time you are

outside pull up your sleeves

to catch some vitamin D,

hug a plant, and look

around at the illuminated

world created by our

multifunctional sun.

The End!!!

Hope you learned

something…