unit 9: astronomy
DESCRIPTION
Unit 9: Astronomy. Earth Science, Chapters 21-24. Unit Big Idea/Essential Questions. Entire universe is driven by energy: gravity and electromagnetism. Essential Questions 1.How is the Doppler Effect used to explain movement of the universe? - PowerPoint PPT PresentationTRANSCRIPT
Unit 9: Astronomy
Earth Science, Chapters 21-24
Unit Big Idea/Essential Questions
Entire universe is driven by energy: gravity and electromagnetism.
Essential Questions1.How is the Doppler Effect used to explain movement of the universe?
2. Explain stellar evolution and how spectroscopes can identify material in a star.
3. How has the view of the universe changed over time?ES Standards: 4.1, 4.2, 4.3
Key Vocabulary
Aphelion Declination Geocentric Heliocentric Perihelion Retrograde
motion Revolution Rotation
Escape Velocity Maria Solar Nebula Doppler Effect Nuclear Fusion Spectroscopy Absolute/Apparent
magnitude Nebula
Golden Age of Astronomy Centered in Greece Used geometry and trigonometry Geocentric View and Ptolemaic
System Aristotle- Earth is spherical Eratosthenes- Size of Earth Aristarchus- Distances from Earth Hipparchus- Star Catalogue
Modern Astronomy
Copernicus and Heliocentric View Tycho Brahe and stellar parallax Kepler and Elliptical orbits Galileo Netwon and Laws of Motion
Law of Universal Gravitation
Law of Universal Gravitation Fgravity= G(m1m2/d2) Gravitational Constant (G):
6.67 x 10-11 N*m2/kg2
Calculate force between an object with 50 kg and another object with 50 kg that are .75 m away from each other.
What is the force when the distance is 2500 m?
What happened to the Force of gravity as distance increased?
Positions in the Sky
2 mapping Systems Constellations Equatorial (declination and right ascension)
Motions of Earth Rotation Revolution
Earth-Moon System
Origins of the Solar System Theories
Big Bang Nebula
Terrestrial vs. Jovian Planets Earth’s Moon
Theory of formation Lunar Surface
Signals From Space Electromagnetic Spectrum
Physics of Light Spectrums
Continuous Dark-Line Bright-Line
Doppler Effect Telescopes
Optical Non-Optical
Sun
Structure Interior Visible Surface: photosphere Atmosphere: chromosphere and corona
Activity Sunspots Prominences Flares
Stars
Question of the Day
How do caves form?
Groundwater
Rate of movement and amount depends on Porosity Permeability Aquitards Aquifers
Glaciation
Two types Glacial Movement
Zone of accumulation Zone of wastage
Erosion by plucking and abrasion
Glacial Features via Erosion Glacial Trough Hanging Valleys Cirques Aretes Horns Fjords
Question of the Day
What are the differences between continental glaciers and alpine glaciers?
Depositional Features
Till vs. Stratified Drift Glacial Erratics Moranines Outwash Plains Drumlins Eskers Kames Kettle Lakes
Causes of Glaciation
Plate Tectonics Changes in Earth’s Orbit Changes in output energy from Sun Albedo and Atmosphere composition
Wind Erosion and Deposition Deflations and Abrasion Loess Sand Dunes