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Earth and Space Science. english.peopledaily.com.cn. Earth and Space. Reminder: Syllabus signed and turned into tray. Branches of Earth/Space Science. What are the 4 branches of Earth/Space Science ?. life123.com. Branches of Earth/Space Science. - PowerPoint PPT Presentation
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Earth and Space Science
english.peopledaily.com.cn
Earth and Space Reminder: Syllabus signed and turned into
tray.
Branches of Earth/Space Science
What are the 4 branches of Earth/Space Science?
life123.com
Branches of Earth/Space Science
Draw an illustration for each branch of Earth/Space. Geology Astronomy Oceanography Meteorology
Branches of Earth/Space Science
What are the 4 branches of Earth/Space Science?
life123.com
Geology: The study of the origin, processes, and structure of solid Earth. Astronomy: The study of the universe beyond Earth. Oceanography: The study of Earth’s oceans. (Covers ¾ of Earth’s surface). Meteorology: The study of Earth’s atmosphere.
pdfcast.org
4
Geology Oceanography
Meteorology Astronomy
Astronomy
sciencephoto.com
Scientific study of the universe.
Astronomy
sciencephoto.com
What have astronomers discovered?
Universe Rank/connect the following components of the
universe from largest (1.) to smallest (3.) using a flow chart.
-Asteroids(3.)-Planets (3.)-Stars (2.)-Galaxies (1.)-Comets (3.)-Black Holes (2.)
Cosmology
sciencephoto.com
• Study of the origin, structure and
evolution of the universe.
Cosmology Debate
What is Earth’s place in the Universe?
Aristotle, Greek philosopher, proposed the Geocentric Model.
Copernicus was an earlyastronomer who hypothesized the Heliocentric Model.
(382-322 BC)
1473-1543
Cosmology Debate
What is Earth’s place in the Universe?
Aristotle, Greek philosopher, believed all things in the universerevolved around the Earth. Geocentric Model
Copernicus was an earlyastronomer who proposed the solarsystem model: planets revolvearound the sun. Heliocentric Model
(382-322 BC)
1473-1543
Cosmology Debate
Illustrate the difference between the Geocentric and Heliocentric Model .
Heliocentric Model• In 1609 Galileo used the first telescope to provide evidence of the Heliocentric Model.
• In 1610 he published the Starry Messenger which revealed his findings. He published more evidence later.
• Galileo and his publications were banned from the church.
Galileo Galilei
A Starry Night
sciencephoto.com
Why can we see stars in the sky at night?
A Starry Night
sciencephoto.com
Why can we see stars in the sky at night?• Stars produce and emit light that we can
see or can be gathered by a telescope.
• Other objects within our solar system reflect light from our sun to Earth.
Electromagnetic Radiation
All light particles emitted or reflected by objects in space.
mynasadata.larc.nasa.gov
The spectrum divides light particles into 7 regions based on their wave-like properties.
Electromagnetic Spectrum
mynasadata.larc.nasa.gov
Wave-Like Properties Wave-length: Length of a wave. (meters)
Frequency: How many waves (cycles) can past a certain point in a given amount of time.
(waves per second= Hertz)
Wave-Like Properties Wave-length: Length of a wave.
Frequency: How many waves can past a certain point in a given amount of time.
Temperature of light particles is a measurement of energy they contain and can emit to their surroundings.
Electromagnetic Spectrum Analysis
mynasadata.larc.nasa.gov
Electromagnetic Spectrum Analysis
mynasadata.larc.nasa.gov
What produces and emits these light particles toward Earth?What reflects these light particles to Earth?What are the only type of light particles that can pass through Earth’s atmosphere? Which light particle region has the smallest wavelength?Which light particle region has the smallest frequency?Which light particle region emits the smallest amount of energy?As wavelength increases for a light particle, what happens to its frequency? energy?In the visible region, (ROYGBIV), does red or blue light particles have a slightly larger wavelength?
Electromagnetic Spectrum Analysis
loke.as.arizona.edu
Telescopes
What is a telescope?
universetoday.com
Telescopes
What is a telescope? An instrument that collects and focuses electromagnetic radiation from the sky for better observation.
universetoday.com
Types of TelescopesRefracting Telescope
http://images.yourdictionary.com
Reflecting Telescope
universetoday.com
Types of TelescopesRefracting Telescope
http://images.yourdictionary.com
Reflecting Telescope
universetoday.com Developed by Hans Lippershey. Uses only lenses to collect/focus light. Lens’ size is limited due to support only around the lens. Restricts amount of light collected and therefore objects observed.
Developed by Issac Newton. Uses mirrors to gather/focus light toward eyepiece. Mirrors can be bigger due to Additional support from back. Able to collect more light and observe more objects.
Telescopes What can limit the amount of light that
telescopes can collect from earth?
Telescopes What can limit the amount of light that
telescopes can collect from earth?
1. Light pollution: Artificial light from cities can block natural light from stars and planets. That is why stars are brighter in the country then in the city.
2. Earth’s atmosphere: It blocks a majority of the invisible light from reaching ground telescopes.
Space TelescopesHubble Telescope
britannica.com
James Webb Telescope
bis.gov.uk
Spacecraft
Many spacecraft have left Earth’s orbit to explore the outer planets and their moons. Use the internet to learn more about these spacecrafts below. Spacecraft Launch Date Purpose
Voyager I and II )
Galileo
Cassini-Huygens
Twin Mars Rovers:Spirit and Opportunity
Universe: Measuring Distance
Light Year: The distance light travels in one year.
-Light particles travel at the same speed: 300,000 km/s
*How far (km) does light travel in one year?
Astronomical Units: Distance between the Earth and the sun. 500,000,000 km = 1 astronomical unit (AU)
How long does it take light from the sun to reach earth?
Galaxies
Galaxies are composed of stars, gas and dust held together by gravity.
Galaxies are the building blocks of the universe
There are approximately 100 billion galaxies in the universe.
Each galaxy contains 10 million to trillions of stars.
In between the stars are gas & dust particles.
Mr. Hubble
• Edwin Hubble is a famous astronomer who observed galaxies outside the Milky Way.
• Classified galaxies into 3 groups based on their shapes.
Elliptical
Spiral
IrregularSpiral
Barred Spiral
Elliptical Galaxies
These are round or oval in shape Look like the spiral galaxies without the
arms. Contain mostly older stars Have very little gas or dust between the
stars.
Centarus AMeisser87 in the Virgo constellation
Spiral Galaxies
Spiral Galaxies:has a nucleus or center of bright stars & flattened arms that spiral out around the center – entire galaxy is rotating around the center
Irregular Galaxies
Has no particular shape Tend to be smaller & fainter in color Younger stars
Cigar galaxy of Ursa Major
The Milky Way
1.What shape is our Milky Way? barred spiral
2. What holds the stars, gases, and dust together in our Milky Way? gravity
What is the Future of our Galaxy?
Andromeda Milky Way
They could collide with one another in about 4 billion yrs.
Galaxy Movement
Edwin Hubble provided evidence of galaxy movement.
If the wavelength of light collected from a telescope gets smaller then a galaxy is moving toward the Milky Way. (BLUE Shift)
If the wavelength of light collected from a telescope gets larger then the galaxy is moving away from the Milky Way. (RED Shift)
Doppler Effect
Universe: Bell Ringer
1. Identify the four branches of Earth and Space.
2. T or F: The sun reflects off the moon?3. Draw the difference in wavelength
between an ultraviolet and infrared light particle.
4. Identify and illustrate the three types of galaxies that make-up our universe.
5. Who discovered that galaxies are moving?
6. What are the two ways in which we measure distance?
Reflection: Doppler Effect Lab
How was the rubber band model useful in explaining the doppler effect?
What was a limitation to using the rubber band model to illustrate the doppler effect?
Explain the movement of the following stars:a. If you look through a telescope and observe
overtime the star’s wavelength becoming shorter.
b. You look at another star in the sky and overtime observe that the star’s wavelength increases.
Doppler Effect
Movement in the Universe
Edwin Hubble’s results on galaxy movement using the doppler effect provided evidence that the universe was expanding.
Inflationary ? (Deflationary) Steady-State?
Movement in the Universe
Edwin Hubble’s results on galaxy movement using the doppler effect provided evidence that the universe was expanding.
Inflationary Steady-State
Hubble Telescope: Ultra Deep Field
Expansion of Universe Lab
Movement in the Universe
Edwin Hubble used the Doppler Effect of light particles to prove that the universe was expanding.
He was also able to calculate the speed of different galaxies by observing the amount of light emitted by them. (Hubble’s Law)
His research provided evidence of the possible origin of the universe.
Big Bang Theory Proposed by a Belgian
cosmologist and priest in 1933. The Universe was once
compressed into a tiny object: “Cosmic Egg”.
Cosmic Egg exploded propelling matter into space and explaining why the universe is currently expanding.
Hubble’s research justified Lemaitre’s hypothesis.
Georges Lemaître1894-1966
Time-Line: Big Bang Theory
• As you watch the video clip, record important events that scientist hypothesized occurred after the big bang.
Big Bang Time Line
Cosmic Background Radiation
Why is cosmic background radiation important to scientists?
bbc.co.uk
Composition of the Universe
dailygalaxy.com
Universe: Measuring Distance
Light Year: The distance light travels in one year.
-Light particles travel at the same speed: 300,000 km/s
*How far (km) does light travel in one year?
Astronomical Units: Distance between the Earth and the sun. 500,000,000 km = 1 astronomical unit (AU)
How long does it take light from the sun to reach earth?
Big Bang Balloon Lab
Expanding Universe Article
How did the solar system form?
Expanding Universe Article
Why is the universe expanding at an accelerated rate?
Life Cycle of a Star
• Read section 30.2 (pg. 781) about the life cycle of a star.
• Identify and illustrate the stages of a star’s life cycle.