The document summarizes key ideas about the solar system. It describes the geocentric and heliocentric models of planetary motion. It explains Kepler's laws of planetary motion and the protoplanet nebular model of solar system formation. It provides details on each planet, including their physical properties and orbital characteristics. It also describes smaller bodies like comets, asteroids, meteoroids and meteorites that orbit within the solar system.
Hawaii's Most Active Volcano: Here's The Latest On Kilauea's Eruption
The Kilauea volcano is located in the southeastern part of the Big Island of Hawaii.
Believe it or not, Kilauea has been erupting continuously since 1983, with only occasional pauses of quiet activity. This particular "episode" of the eruption began in the late afternoon of May 3, in a part of Leilani Estates, a subdivision near the town of Pahoa.
Officials said there is no way to predict how long the eruption will continue or what shape it will take. This eruption could be finished or could go on for a long time.
Kilauea is one of the most active and well-monitored volcanoes in the world. It's been erupting on and off for hundreds of thousands of years.
All of Hawaii is a tourist destination, but this particular eruption wasn't in an area where most tourists go. The homes at risk are in a subdivision near the town of Pahoa.
Source: USA TODAY. By Doyle Rice. May 4, 2018, accessed May 5, 2018
<https://www.usatoday.com/story/news/nation/2018/05/04/hawaii-volcano-eruption-kilauea-big-island/580466002/>
________________________
Kilauea Volcano Erupts, Spewing Lava and Gases Near Homes in Hawaii
Governor David Ige has issued an emergency proclamation and has called up the National Guard to help emergency workers with evacuation efforts.
Source: THE NEW YORK TIMES. By Meghan Miner Murray, Sabrina Tavernise and Maya Salam. May 4, 2018, accessed May 5, 2018
<https://www.nytimes.com/2018/05/04/us/kilauea-volcano-eruption-hawaii.html>
This tacklesabout locating epicenter,3 typesof plate boundaries hotspot.
A ppt presentation for module 1 in 1st quarter in grade 10sciencein the Philippines.
Feel free tomessage mefor any corrections/suggestions forimprovement.
Hawaii's Most Active Volcano: Here's The Latest On Kilauea's Eruption
The Kilauea volcano is located in the southeastern part of the Big Island of Hawaii.
Believe it or not, Kilauea has been erupting continuously since 1983, with only occasional pauses of quiet activity. This particular "episode" of the eruption began in the late afternoon of May 3, in a part of Leilani Estates, a subdivision near the town of Pahoa.
Officials said there is no way to predict how long the eruption will continue or what shape it will take. This eruption could be finished or could go on for a long time.
Kilauea is one of the most active and well-monitored volcanoes in the world. It's been erupting on and off for hundreds of thousands of years.
All of Hawaii is a tourist destination, but this particular eruption wasn't in an area where most tourists go. The homes at risk are in a subdivision near the town of Pahoa.
Source: USA TODAY. By Doyle Rice. May 4, 2018, accessed May 5, 2018
<https://www.usatoday.com/story/news/nation/2018/05/04/hawaii-volcano-eruption-kilauea-big-island/580466002/>
________________________
Kilauea Volcano Erupts, Spewing Lava and Gases Near Homes in Hawaii
Governor David Ige has issued an emergency proclamation and has called up the National Guard to help emergency workers with evacuation efforts.
Source: THE NEW YORK TIMES. By Meghan Miner Murray, Sabrina Tavernise and Maya Salam. May 4, 2018, accessed May 5, 2018
<https://www.nytimes.com/2018/05/04/us/kilauea-volcano-eruption-hawaii.html>
This tacklesabout locating epicenter,3 typesof plate boundaries hotspot.
A ppt presentation for module 1 in 1st quarter in grade 10sciencein the Philippines.
Feel free tomessage mefor any corrections/suggestions forimprovement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Palestine last event orientationfvgnh .pptxRaedMohamed3
An EFL lesson about the current events in Palestine. It is intended to be for intermediate students who wish to increase their listening skills through a short lesson in power point.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
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Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Instructions for Submissions thorugh G- Classroom.pptxJheel Barad
This presentation provides a briefing on how to upload submissions and documents in Google Classroom. It was prepared as part of an orientation for new Sainik School in-service teacher trainees. As a training officer, my goal is to ensure that you are comfortable and proficient with this essential tool for managing assignments and fostering student engagement.
2. This view of the
rising Earth was
seen by the
Apollo 11
astronauts after
they entered
orbit around the
Moon. Earth is
just above the
lunar horizon in
this photograph.
4. • The Geocentric Model
– This model saw the solar system as perfect spheres with
attached celestial bodies rotating around a fixed Earth.
– The planets rotated around the Earth in perfect circles.
– This model grew out of the ideas that:
• Humans were at the center of a perfect universe created
just for them.
• Since Heaven was a perfect place, then everything that
existed in the Heavens would be perfect.
– This naturally meant that the solar system must be a
place of perfect epicycles moving on perfect spheres,
which were moving in perfect circles.
5. The paths of Venus and the Sun at equal time intervals
according to the Ptolemaic system. The combination of
epicycle and Sun movement explains retrograde motion
with a stationary Earth.
6. (A)The Ptolemaic system
explanation of Venus as a
morning star and evening
star. (B) The heliocentric
system explanation of
Venus as a morning star
and evening star.
7. • The Heliocentric Model
– Nicolas Copernicus in 1543 suggested that the Earth
revolves around the Sun.
– In this model each planet moved around the Sun in
perfect circles at different distances and at faster speeds
the closer to the Sun a planet was.
– Tycho Brahe
• Made precise measurements of the Sun, Moon, planets, and the
stars.
– Johannes Kepler
• Found that the planets did not move in perfect circles.
• Planets move in the path of a ellipse.
9. • Kepler’s Laws of Planetary Motion
– Kepler’s First Law.
• Each planet moves in an orbit that has the shape of a ellipse,
with the Sun located at one focus.
– Kepler’s Second Law
• An imaginary line between the Sun and a planet moves over
equal areas of the ellipse during equal time intervals.
• The velocity of a planet would therefore vary as it is not always
the same distance from the focus.
• The point where the planet comes closet to the Sun is the
perihelion and the point at which it is farthest from the Sun is
the aphelion.
10. Kepler's first law describes the shape of planetary orbit as
an ellipse, which is exaggerated in this figure. The Sun is
located at one focus of the ellipse.
11. Kepler's second law. A line from the Sun to a planet at
point A sweeps over a certain area as the planet moves to
point B in a given time interval. A line from the Sun to a
planet at point C will sweep over the same area as the
planet moves to point D during the same time interval.
The time required to move from point A to point B is the
same as the time required to move from point C to point
D, so the planet moves faster in its orbit at perihelion.
12. – Kepler’s Third Law.
• The square of the period of a planet’s orbit is
proportional to the cube of that planet’s semimajor
axis t2
∝d3
13. Kepler's third law describes a relationship between the
time required for a planet to move around the Sun and its
average distance from the Sun. The relationship is that the
time squared is proportional to the distance cubed.
15. • Heliocentric model of the solar system
– Commonly the most accepted model of the solar system
• Protoplanet nebular model – most accepted theory
of the origin of the solar system.
16. Formation of the solar system
according to the protoplanet
nebular model, not drawn to
scale.
17. (A) The process starts with a nebula of gas, dust, and
chemical elements from previously existing stars.
18. (B) The nebula is pulled together by gravity, collapsing
into the protosun and protoplanets.
19. (C) As the planets form, they revolve around the Sun in
orbits that are described by Kepler's laws of planetary
motion.
20. – Stage A
• All the elements that made up the current solar system
were derived from stars that disappeared billions of
year ago, even before our Sun was born.
• Hydrogen fusion in the core of large stars results in the
formation of elements through iron.
• Elements that are heavier that iron are formed in rare
supernova explosions of dying massive stars.
21. – Stage B
• All of the elements from Stage A began to form large,
slowly rotating nebula
• Under the influence of gravity, the size of this nebula
begin to decrease, which increased its rate of spin
• Eventually this spinning nebula formed an accretion
disk which is an enormous, bulging disk of gases and
elements formed as nebula condense.
• Eventually this accretion disk became compressed into
protoplanets and a protosun
22. – Stage C
• An initial flare-up of the Sun from the warming and
condensing established the protosun as a star and it
became our Sun.
– Between the orbits of Mars and Jupiter there is an
Asteroid belt that some think was formed by the breakup
of a larger planet.
24. • Introduction
– The solar system consists of a middle aged main
sequence G type star called the Sun with nine planets,
nearly fifty moons, thousands of asteroids, and many
comets revolving around it.
– This is all held together by the force of gravitational
attraction
– Terrestrial planets are those which have a composition
very similar to the Earth’s composition
• these planets are composed mostly of rocky material
with iron
• These planets have a density of 4 – 5.5 g/cm3
.
25. – The Jovian (Giant) planets are those that are composed
mostly of hydrogen, helium, and methane with a density
of 2g/cm3
.
• The probably contain a core of material much like the
makeup of the terrestrial planets which is surrounded
by a thick layer of gases.
26. The order of the planets out from the Sun. The orbits and
the planet sizes are not drawn to scale.
27. Earth's rotation around its axis results in day and night.
One year is required for one revolution.
28. (A)The early secondary
atmosphere of Venus lost
hydrogen to space and
oxygen became
combined with rocks as
ultraviolet radiation
decomposed water
molecules. (B) On Earth,
water formed the oceans,
carbon dioxide was
removed, and plants
released oxygen, which
in turn formed an ozone
layer in the atmosphere,
protecting the water and
life below.
29. • Mercury
– Innermost planet
– Period of revolution is 88 days.
– Rotation once every 59 days.
– High kinetic energy of gas molecules and a low
gravitational pull
– Surface temperature 427O
C (800O
F)in the sunlight to –
180O
C (-350O
F)in the dark
– Surface covered with craters
– Presence of magnetic fields and high density so must
have a high iron content with at least a partial molten
core
30. Mercury is close to the Sun and visible only briefly before
or after sunrise or sunset, showing phases. Mercury
actually appears much smaller in an orbit that is not tilted
as much as shown in this figure.
31. A photomosaic of Mercury made from pictures taken by
the Mariner 10 spacecraft. The surface of Mercury is
heavily cratered, looking much like the surface of Earth's
Moon. All the interior planets and the Moon were
bombarded early in the life of the solar system.
32. • Venus
– Very bright in morning and evening sky.
– revolves around the Sun once every 225 days.
– Rotates on its axis once every 243 days.
– Exhibits retrograde rotation where the rotation of the
planet is opposite its direct of revolution around the Sun
and opposite most other planets.
– Average surface temperature is 480 O
C (900 O
F)
– Atmospheric pressure approximately 100 times that
experienced on Earth.
– Clouds and rain consisting of sulfuric acid.
– No satellites and no magnetic field.
33. This is an image of an 8 km
(5 mile) high volcano on the
surface of Venus. The
image was created by a
computer using Magellan
radar data, simulating a
viewpoint elevation of 1.7
km (1 mile) above the
surface. The lava flows
extend for hundreds of km
across the fractured plains
shown in the foreground.
The simulated colors are
based on color images
recorded by the Soviet
Venera 13 and 14
spacecraft.
34. • Mars
– Unique, bright reddish color which exhibits a swift
retrograde motion against the background of stars.
– Revolves around the Sun in 687 days.
– Rotates on its axis once every 24 hours, 37 minutes
– Has an atmosphere
– A geologically active past and is divided into 4
provinces:
• Volcanic regions
• Systems of canyons
• Terraced plateaus near the poles
• Flat regions pitted with impact craters.
35. – average temperature is –53 O
C (-63 O
F)
– Atmosphere is 95% CO
– Atmospheric pressure 0.6 percent of Earth’s atmospheric
pressure
– Two satellites
• Deimos – 13 km across
• Phobos – 22 km across
• Both are thought to be captured asteroids
36. Surface picture
taken by the
Viking 1
lander found
reddish, fine-
grained
material, rocks
coated with a
reddish stain,
and groups of
blue-black
volcanic rocks.
37. A view of the surface of Mars taken by the Viking Orbiter 1
cameras. The scene shows three volcanoes that rise an average
of 17 km (about 11 mile) above the top of a 10 km (about 6
mile) high ridge. Clouds can be seen in the upper portion of the
photograph, and haze is present in the valleys at the lower right.
38. • Jupiter
– Largest of all planets
• Twice as massive as all other planets combined and
about 318 times as massive as the Earth.
– Radiates twice as much energy as it gets from the sun due
to slow gravitational compression
– Average density of 1.3 g/cm3
– Made mostly of hydrogen and helium with some rocky
substances
– A solid core with a radius of about 14,000 km (8,500
miles)
40. Photos of Jupiter taken
by Voyager 1. (A) From
a distance of about 36
million km (about 22
million mi). (B) A closer
view, from the Great Red
Spot to the South Pole,
showing organized cloud
patterns. In general, dark
features are warmer, and
light features are colder.
The Great Red spot soars
about 25 km (about 15
mi) above the
surrounding clouds and
is the coldest place on
the planet.
41. – Above this core is about 35,000 km (22,00 mi) of liquid
hydrogen, which is compressed so tightly by millions of
atmospheres of pressure that it is able to conduct
electricity and is termed metallic hydrogen.
– Above this is 20,000 km (12,000 mi) of liquid hydrogen
under much less pressure.
– The outer layer is about 500 km (300 mi) of hydrogen,
helium, ammonia gas, and crystalline compounds with a
mixture of ice and water.
– Sixteen satellites – four are called Galilean moons as they
were discovered by Galileo in 1610
• Io
• Europa
• Ganymede
• Callisto
42. The four Galilean
moons pictured by
Voyager 1.
Clockwise from
upper left, Io,
Europa, Ganymede,
and Callisto. Io and
Europa are about the
size of Earth's Moon;
Ganymede and
Callisto are larger
than Mercury.
43. (A)This image, made by the Hubble Space Telescope, clearly
shows the large impact site made by fragment G of former
Comet Shoemaker-Levy 9 when it collided with Jupiter.
44. (B) This is a picture of Comet Shoemaker-Levy 9 after it
broke into twenty-two pieces, lined up in this row, then
proceeded to plummet into Jupiter during July, 1994. The
picture was made by Hubble Space Telescope.
45. • Saturn
– Slightly smaller and less massive than Jupiter with a system of
rings
– The rings are made up of particles, some which are meters across
and some that are dust sized particles.
– 10 moons
• Janus
• Mimas
• Enceladus
• Tethys
• Dione
• Rhea
• Titan
• Hyperion
• Iapetus
• Phoebe
– Titan is the only moon in the solar system with an atmosphere and
is larger than the planet Mercury
46. A part of
Saturn's system
of rings, pictured
by Voyager 2
from a distance
of about 3
million km
(about 2 million
mi). More than
sixty bright and
dark ringlets are
seen here;
different colors
indicate different
surface
compositions.
47. • Uranus, Neptune, and Pluto
– Uranus revolves around the Sun once about every 84
years.
– Both Uranus and Neptune have a core of rocky material
surrounded by water and ice.
– Uranus and Neptune have an atmosphere of hydrogen
and helium
– Average temperature on Uranus is-210 O
C (-350 O
F)
– Average temperature on Neptune is –235 O
C (-391 O
F)
– Uranus tilts 82O
on its axis, which is different from the
less that 30O
for other planets.
– 15 Known satellites around Uranus
– Uranus has 10 narrow rings and a number of dusty bands.
48. – Neptune has 8 satellites
– Neptune also has a series of rings
– Pluto is the smallest planet in the solar system.
– Pluto has a density of 2 g/cm3
– Pluto’s atmosphere is probably mostly nitrogen, with
some methane and CO2
– Pluto orbits around the Sun once every 248 years.
49. This is a photo
image of
Neptune taken
by Voyager.
Neptune has a
turbulent
atmosphere
over a very
cold surface
of frozen
hydrogen and
helium.
53. • Comets
– Comets
• Small relative to other bodies in the solar system
• Made of frozen CO2, NH3, CH4 and particles of dust
and rock mixed in.
• Originate approximately 30 A.U. from the Sun
54. – Oort Cloud
• A spherical cloud of objects that occur out past the
orbit of Pluto made of water ice, frozen methane,
frozen ammonia, dry ice, and dust.
• Occurs about 30,0000 A.U. out to a light year or more
from the Sun
55. – Kuiper Belt
• A disk shaped region of smaller icy bodies from 30 to
100 A.U from the Sun.
• This is the source of short period comets.
56. – Centaurs
• Kuiper Belt Objects that orbit between Jupiter and
Neptune
– Comets have two types of tails
• Ionized gases.
• Dust
– The comets tail always points away from the Sun, so it
follows the comet as it approaches the Sun and leads the
comet as if moves away from the Sun
57. Comets originate from the Oort cloud, a large spherical cloud of
icy aggregates, or from the Kuiper Belt, a disk-shaped region of icy
bodies. The Kuiper Belt is illustrated here, extending from 30 to
100 A.U. from the Sun. The Oort cloud is a spherical "cloud" that
ranges from about 30,000 A.U. to a light-year or more from the
Sun.
58. As a comet nears the Sun
it grows brighter, with the
tail always pointing away
from the Sun.
59. • Asteroids
– The asteroid belt lies between Mars and Jupiter
– The asteroids in this belt are between 1 km up to the
largest (Ceres) which is 1,000 km (600 mi)
– The asteroids in the inside of the belt are made of a stony
material and the asteroids on the outside of the belt are
made of a carbon material
– Some other asteroids are metallic, made of iron and
nickel
60. Most of the asteroids in the asteroid belt are about halfway
between the Sun and Jupiter
61. • Meteors and Meteorites
– Meteroids
• Remnants of asteroids and comets after the heat of the Sun and
collisions.
– Meteor
• The streak of light and smoke left in the sky by a meteoroid is
called a meteor.
• These are the shooting stars that we see in the sky
– Meteor shower
• Occurs when the Earth passes through a stream of particles that
are left by a comet.
• There is an intense meteor shower the third week in October as
the Earth crosses the path of Halley’s Comet.
62. – Meteorite
• A meteorite is what is left of a meteoroid if it survives the flight
through the Earth’s atmosphere.
• Classified according to their makeup
• Iron meteorites
– made up mostly of iron and nickel material
• Stony meteorites
– composed mostly of rocky material much like that found on
Earth
– chondrites – have a structure of small spherical lumps of silicate
materials.
– Achondrites – do not contain this silicate clumps
• Stony-iron meteorites
– Made up of a conglomerate of both types of materials.
63. (A)A stony meteorite.
The smooth, black
surface was melted by
friction with the
atmosphere.←
(B) An iron meteorite that
has been cut, polished, and
etched with acid. The
pattern indicates that the
original material cooled
from a molten material over
millions of years.→