The Sun

By Mrs. Severance’s

Third Grade Class

2008 - 2009

The Sun and the solar system

• The Sun is the center of our solar system called the Milky Way.

• There are eight planets and one dwarf planet that orbit the sun.

• The Sun is the largest star in our solar system.

Inside the sun

• The Sun is made of hydrogen and helium. These create gases that heat the Earth.

• The temperature inside the Sun is 16,000,000 degrees Fahrenheit

The surface of the Sun

• Astronomers never look at the Sun. The Sun’s bright light can damage your eyes or blind you.

• The Suns surface looks like it is boiling.

• Temperature pools on the Sun can reach more than 10,000 degrees Fahrenheit.

• Solar flares sometimes erupt from the Sun’s surface.

Exploring the Sun

• Astronomers use space probes to study the Sun. The probes name was Ulysses.

• Astronomers believe the Sun began as a giant cloud of gas.

• Astronomers believe the Sun will last for five billion more years.

By Isabella and Alex

Mercury

Atmosphere

•gases Mercury atmosphere is sodium Mercury has a small atmosphere.

•Mercury is really hot to live on.

•Mercury is the first planet from the sun.

•Mercury is really small.

• Mercury is 3,031 miles wide.• Mercury is the smallest planet.• It is about the size of Earth’s moon

How big Mercury is.

The meaning of Mercury

• Mercury was discovered in the 1500s

• Mercury is named after the Roman god. The mythical Roman winged messenger and

escort of dead souls to the underworld.

• It was named for the speedy Mercury because it is the fastest-moving planet.

Mercury’s atmosphere •Mercury has almost no atmosphere, because of that it has extreme temperatures. •The side that faces the sun can reach 800 degrees Fahrenheit.•The side that faces away from the sun can drop is minus 300 degrees Fahrenheit.

Venus

By Jordan and

Austin

Venus• Venus is the hottest planet in the solar system.• This planet is about the same size as earth but

is covered with impenetrable clouds of carbon dioxide and sulfur compounds.

• This makes the daytime about 115 earth days long and surface temperature 464 degrees Celsius.

Venus

• Venus takes about 225 days to orbit the sun.

• Venus was named after the Roman goddess of love.

• The brightest of all planet’s Venus is also known as the morning and evening star.

Discovery of Venus

• No one know who discovered Venus, since it is so obvious in the sky .

• Robert Richardson noticed that Venus rotates "backwards". In other words, on Venus the Sun rises in the west and sets in the east.

Venus’s Atmosphere

• This planet is covered with fast-moving sulphuric acid clouds which trap heat from the Sun.

• Its thick atmosphere is mostly carbon dioxide.

EARTH

By Ashleigh and

Brennan

Size of Earth

•The Earth is about 7,926 miles in diameter.

•It is smaller than Venus

•Earth is the third planet from the sun

Atmosphere

•The atmosphere is a thin layer of gases that surrounds the Earth.

•It is composed of 78% nitrogen, 21% oxygen, 0.9% argon, 0.03% carbon dioxide, and trace amounts of other gases.

Old Earth

•We once thought Earth was the center of the solar system

•In the 1500s Nicolaus Copernicus discovered the sun was actually the center.

What Earth’s Made Of

•Earth’s made up of hot iron•Earth has 3 layers

– The core– Mantel–lithosphere

•Earth is also made of dirt

Mars

By Tina and Jared

Atmosphere

•A thin layer of 95 % carbon dioxide, 3% nitrogen, and 1.6% argon (there is no oxygen).

•My temperature is 27degrees above zero degrees Celsius.

Size

•Mars is about 4,222 miles in diameter.

•Mars has 2 moons.

•Mars has no rings.

Rotation on axis

•My rotation on axis is 24 hours on.

•Mars is iron in the red dirt.

•The red on Mars is iron.

Discovered MarsMars was discovered when humans have know

about the existence of our moon.

We do not know who exactly discovered Mars but who ever discovered Mars was smart.

Jupiter

By Lauren and

Scott

Jupiter’s moon’sThe four biggest moons are:

Jupi

ter's

fou

r m

oon‘

s

Jupiter is made of•Helium

•Methane

•Ammonia

•Hydrogen

Jupiter

•Jupiter is the king of all Roman Gods.

Temperature

•Jupiter’s temperature is one hundred twenty one minus °C.

Saturn Stefen Gill and Rebecca Piche.

Saturn

•Saturn has 18 moons

•Saturn is the second largest planet

•Saturn is the sixth planet from the sun

Saturn’s rings•Saturn’s rings are made out of ice and rocks

•Today scientists have learned that Saturn has thousands of rings that formed one big

ring

Titan•Titan is Saturn’s largest moon

•Titan is one of Saturn’s moons.

•It is 3,200 miles wide.

ATMOSPHERE •Saturn’s atmosphere is minus 177degrees °c hydrogen and

helium.

•Saturn’s atmosphere is a mixture of ammonia, water vapor, helium,

and hydrogen

•Saturn is blue around it because the blue is its atmosphere

Temperature

• The temperature in its upper atmosphere is minus 287 ° F

• Saturn’s temperature is always much colder than earth

• The temperature at top of Saturn’s clouds averages 288°F

I hope you liked our report !

Uranus

By Mary and

Zahriyah

Uranus’s moons

•Uranus has at least 18 moons

•5 moons and 10 other moons

•Voyager 2 flew by Uranus

Exploring Uranus

•William Herschel discovered Uranus in 1781.

•People know very little about Uranus before 1977.

•The planet was to far away to study easily.

•Scientists will not send another space probe to Uranus for many years.

Fast Facts about Uranus.

• Rotation period 17 hours ,14minutes.

• Uranus has 84 years to go around the sun.

• 2,871million kilometers from the sun.

• Name after Greek god of the sky.

Uranus

• The size of Uranus is 31,764 miles.• The temperature of Uranus is

about minus 350 degrees Fahrenheit.

• Uranus lies on its side as it rotates.

Neptune

By Cristine andOakley

Neptune's orbit

•Neptune and Pluto switch orbits•They switch every 21 years

•Sometimes Neptune is the last planet

Neptune's rings

•Neptune has 4 rings

•There are Diffuse, Inner, Platreau, and Main

•They found the rings in1989

Neptune’s moons

•Neptune has 8 moons

•2 are Triton and Naiad

•Naiad is 58km wide

Neptune’s day

•There are 16 hours and 7 minutes in a day on Neptune•Neptune goes 3.5 miles a second•Seasons can last 40 years

King of the sea

• Neptune was named after the Roman God of the sea

Pluto

By Lily and Libbie

Pluto use to be the smallest

•Pluto was the smallest planet in space.

•People can only see it through a telescope.

Pluto’s Atmosphere

–It’s Atmosphere is frozen into ice.

•Composition is made of ice and rocks.

• The temperature is 390 degrees.

Pluto’s moon

• It’s size is smaller than Earth’s moon.

• It have one moon named Charon.

Pluto and Neptune

•Pluto is the distant planet from the sun.

•Pluto and Neptune are the only planets that cannot be seen.

•Astronomers discovered these planets by mathematics.