Chapter 26 Our Solar System
Planet Mars (The Red Planet): - _______ Planet from the Sun - _______ than Earth - Mars is rocky, dusty and dry- __________ in soil -Mars has ___________, like Earth -Has __ moon
- Fourth Planet from the Sun - Smaller than Earth - Red Iron -- Mars is rocky, dusty and dry- red iron in soil -Mars has polar ice-caps, like Earth -Has 2 moon - Phobos and Deimos
Planet mercury: - _______ to the Sun. - _________ planet in our Solar System. - Lots of ______ like the Moon. - _____ atmosphere.
-Closest - to the Sun. -Smallest - planet in our system -craters - lots of them like the moon. -NO - no atmosphere
•Comets from Kuiper Belt visit us; ________ is a good example, visiting us every 76 yrs.
Halley Comet
•______ belt is a disc-shaped region of icy bodies-including dwarf planets (Pluto) and comets beyond the orbit of Neptune.
Kuiper
They are closer to the Sun, closer together, and called ________ Planets.
Terrestrial
The Nebular Theory says that: _________ brought particles together and made their shape spherical.
gravity
•__________ is partial eclipse
•Penumbra
•About ______ tons of small meteorites strike the Earth everyday.
200
•There are ___ regions where we find objects in our solar system.
3
The Nebular Theory says that: The Sun and all planets were formed at the same time about _____ billion years ago.
5
Jupiter has more than ___ moons!
67 (4 largest are in the picture)
•How big is the Sun? •_________% of the mass of the solar system is mass of the Sun.
99.86%
•Mercury, Venus, Earth and Mars are called the ______ Planets. They are solid rock, also called __________Planets.
Inner Terrestrial
What is the largest planet?
Jupiter
•The four outer planets are:
Jupiter, Saturn, Uranus, and Neptune
Planet Neptune: -_______ planet from the Sun -__th Largest planet (can fit 60 Earths inside) -Gas planet - _____ -__________ planet in the solar system -1 Neptune yr = 60190 Earth days (_____ Earth yrs) -1 Day = _______ Earth hours -Has ___ moons and a ______ system
-Eighth planet from the Sun -4th Largest planet (can fit 60 Earths inside) -Gas planet - Icy -Windiest planet in the solar system -1 Neptune yr = 60190 Earth days (165 Earth yrs) -1 Day = 16.2 Earth hours -Has 14 moons and a ring system
Planet Jupiter (The Giant): -_______ planet from the Sun -________ planet in our solar system holds 1300 Earths -_____ planet - cloud has methane + He + H -Has red spot - giant spinning ________ -1 Jupiter yr = 4331 Earth days (__ Earth yrs.) -Spins fast, 1 Jupiter day = about ___Earth hours.
-Fifth planet from the Sun -Largest planet in our solar system holds 1300 Earths -Gas planet - cloud has methane + He + H -Has red spot - giant spinning STORM -1 Jupiter yr = 4331 Earth days (12 Earth years) -Spins fast, 1 Jupiter day = about 10 Earth hours.
Planet Venus: - _______ planet from the Sun. - _______ size to Earth (solid surface) - Rotates in _________ direction - _______ due to carbon dioxide green house gas. - Lots of ________. -Has ___ moon.
-Second -- 2nd planet from the Sun -Similar -- Similar size to Earth -opposite - Rotates in opposite direction -Hot and deadly - due to green house gas -Volcanoes - lots of them -NO - no moon
Planet Uranus: -Seventh planet from the Sun -3rd Largest planet -Gas Planet - ice similar to Neptune -Coldest Planet (has no internal source of heat) -Has 27 moons and a faint ring system -1 Uranus yr = 30687 Earth days (84 Earth yrs) -1 day = 17.25 Earth hours
-Seventh planet from the Sun -3rd Largest planet -Gas Planet - ice similar to Neptune -Coldest Planet (has no internal source of heat) -Has 27 moons and a faint ring system -1 Uranus yr = 30687 Earth days (84 Earth yrs) -1 day = 17.25 Earth hours
The 3 regions where we find objects are: ________ belt, the _______ belt, and the ________ Cloud.
Asteroid belt Kuiper belt Oort Cloud
Astronomers use ___________ to measure the distances between objects in our solar system.
Astronomical Unit (AU)
1 AU = the distance from _____ to the Sun.
Earth
•________Eclipse occurs when the Moon passes into the shadow of the Earth.
Lunar
•Asteroid fragments known as____________ frequently visit Earth's atmosphere. They are usually called __________. If they survive the heat and reach the Earth, they are known as __________.
METEOROIDS METEORS METEORITES
What are the name of the 4 inner planets?
Mercury, Venus, Earth and Mars
•Solar Eclipse occurs when the _____________ falls on the Earth.
Moon's shadow
Formation of our solar system has what theory?
Nebular Theory
•_______ Cloud is a collection of far-out objects, more than 50,000 AU from the Sun.
Oort More than 50,000 AU from the Sun
Jupiter, Saturn, Uranus, and Neptune are called _________ Planets. They are large gaseous (H2, He) planets, also know as _______Planets.
Outer Jovian
Planet Saturn (The ________ Planet)
Ringed
Terrestrial Planets are rocky and consist of mineral-containing __________.
SOLID CRUST
The moon is considered the Earth's Natural ______
Satellite
The ____ is our energy supply.
Sun
•________ is the darkest part of the shadow; total eclipse and lasts 2 to 3 minutes.
Umbra
•The solar system consists of: (a) The _____, (b) 8 ________ - large enough for their gravity to make them spherical, but small enough to avoid nuclear reaction (fusion) in their core. (c) _______(s) orbiting planets, (Mercury & Venus do NOT have a one) (d) ________ :- small rocky bodies (e) _________:- small icy objects (f) __________:- orbit on the outer edge of solar system, e.g. Pluto.
a. Sun b. Planets c. Moon d. Asteroids e. Comets d. Dwarf Planets
•The ________ belt is the region in the Solar System located roughly between the orbits of the planets Mars and Jupiter. It is occupied by numerous irregularly shaped bodies called ________ or ____________.
asteroid asteroids or minor planets
The Moon's surface has NO ______ or _______.
atmosphere or liquid water
The Nebular Theory says that: Planets were formed from a cloud of gas and ______ (nebula is Latin for ____).
dust
Tiny part of thermonuclear reaction reaches the Earth to give us ______ & _______.
food & energy
Outer planets are described as?
gigantic, gaseous, low-density planets
Outer planets have very strong ________ force that attracted gas particles above their surface, hence gaseous. The gases are primarily _______ & _______.
gravitational hydrogen and helium
The massive Sun developed thermonuclear reaction due to huge ?
gravity, high pressure & temperature
Jupiter moons consist of what?
ice, water, and volcanic activitity
•The reason that one side of the moon is never visible from the Earth is because the _____ spins once on its axis in the same amount of time it takes to revolve around the ________.
moon Earth
•Our nearest neighbor in space is ??
our moon
•All outer planets have ______ systems, Saturn being the most prominent.
ring
•Jupiter, Saturn, Uranus, and Neptune all have _________ (moons). Saturn is famous for its _______ system.
satellites ring
•Our _____________ is a collection of objects gravitationally bound to the Sun.
solar system
The Nebular Theory says that: The massive Sun developed _________________ due to huge gravity, high pressure & temperature.
thermonuclear reaction
Saturn: -_______ Planet from the Sun - ______Largest Planet, but very light -_______ density - _______Gas planet similar to Jupiter - ___ flat rings made of ice, rocks and dust -1 Saturn year = 10759 Earth days (__ Earth yrs) -1 Saturn Day = _____ Earth hours -Has about ___ moons beyond its rings (Titan is largest) -Has ________ (like a bright star)
-Sixth Planet from the Sun -2nd Largest Planet, but very light -Lowest density -Gas planet similar to Jupiter -4 flat rings made of ice, rocks and dust -1 Saturn year = 10759 Earth days (29 Earth yrs) -1 Saturn Day = 10.2 Earth hours -Has about 82 moons beyond its rings (Titan is largest) -Has bright light (like a bright star)
Planet Earth (Our Home): - _____ Planet from the Sun - ______ Largest Planet - Supports life with ______(3 things) - 365.25 _____ -Has _______ seasons due to the tilt of its axis (23.50) -1 day = ___ hours
-Third planet from the Sun -5th Largest Planet -air (oxygen), water, land helps support life -days -- 365.25 days a year -4 -- 4 seasons due to tilt of axis -24 --- 24 hours in a day
The Moon is about ______ the size of Earth.
1/4
•Every ______ million yrs large meteorites that cause mass extinction hit Earth
100
