Tài liệu the mars pptx

Mars Introduction Mars is the fourth planet from the Sun in the Solar System and also the first planet in orbit lies outside the orbit of Earth.. Atmosphere The atmosphere of mars

MARS

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2. Tran Van Luc

Mars Introduction

 Mars is the fourth planet

from the Sun in the

Solar System and also

the first planet in orbit

lies outside the orbit of

Earth.

 The solar system

including Nine planets,

including the Mars,

revolve around the sun

 The planet is named after the Roman god of war, Mars It is

also referred to as the "Red Planet" because of its reddish appearance, which is caused by iron oxide that is prevalent

on its surface

 The Mars takes 1.9 years to make a complete revolution

about the sun Its average distance form the Sun is

142,000,000 miles

 The mars is almost spherical in form, with an average

diameter of 4,270 miles The average density of the mars is 2,97 g/cm3

Atmosphere

 The atmosphere of mars is quite different form that of

the earth It is composed primary of carbon dioxide with small amounts of other gases The six most common

components of the atmosphere are:

Carbon Dioxide (CO2): 95.32%

 The atmosphere of Mars can

become quite dusty This is because small dust particles can still be suspended in

the air.

 The atmosphere of Mars is

much thinner than the Earth

Temperature and pressure

 Surface pressure averaging

1/100th that at the surface of the Earth

 The average recorded temperature

on Mars is -63° C with a maximum temperature of 20° C and a

minimum of -145° C.

Surface

 The uniquely red global

surface of Mars is marked by

many interesting features -

some like those on the Earth

and others strangely different

The reddish color is caused by

rust (iron oxide) in the soil

 Some of these features are;

volcanoes, canyon systems,

river beds and dune fields

This is an image of the surface of Mars

NASA

 Of these features, the most interesting

includes the apparently dead volcano

Olympus Mons, which rises 23 km

(~75,000 ft) above the surrounding

plains and is the highest known peak in the Solar System Valles Marineris is a giant canyon system that runs about

2,500 miles across the surface of the

The Poles of Mars

 Mars axis is tilted an angle

of around 25 degrees and

more than the tilt that has

Earth's axis (23.5 degrees)

 The North and South Poles

on Mars are a lot like the

polar regions on Earth

They are the coldest places

on the planet The

temperatures in the winter

can drop to -145° C Both

poles have ice caps that are

mostly made of water ice

The ice caps get bigger and

smaller as the seasons on

Mars change

 The polar ice caps on

Mars have two kinds of

ice They have lots of

water ice, like the ice

caps on Earth They also

have "dry ice" Dry ice is

made of carbon dioxide

Mars has seasons, like

Earth When it is winter

at one pole, some carbon

dioxide from the

atmosphere of Mars

freezes, making dry ice

 Scientists are very interested in the

poles of Mars Life on Earth needs water Mars doesn't have any liquid water on

the surface But the poles have lots of

ice made from water The water ice

might give us clues about life on Mars

We don't know if Mars has life now, or if

it ever did in the past.

Discover Mars

 Mars is much like Venus it's very

bright and therefore easily spotted in the night sky Because of this, we

don't know who exactly discovered

Mars We do know it was named after the Roman god of war, because its

reddish color reminded people of

 In 1659, Christian

Huygens

discovered a

strange feature on the surface of the Red Planet It was later called the

Syrtis Major

 In 1877, astronomer

Giovanni Schiaparelli discovered what he

believed to be several lines crossing one

another He claimed

they were water canals made by intelligent

creatures.

 In 1971, Mariner 9

visited Mars and

sent back images

now the most

famous volcano not

on Earth.

 In 1975, two spacecraft

named Viking I and II landed on Mars to study its surface They

analyzed the rocks and soil of the planet while providing us with

 In 1877, astronomer

Asaph Hall spotted the two moons and named them Phobos, which means fear, and

Deimos, which means panic They were

named after the

mythical horses that drew the chariot of the Roman god, Mars

 Mars is still a big question for

humanity and scientists in particular.

♥๑۩۞۩ ๑ (¯`•♥ The end♥ •´¯) ๑۩۞۩๑♥

Thank you !!!