The Deniers Cycles Within Cycles. Premise… Solar variability and long-term variation in solar luminosity are the key drivers of climate change.

Slides:

Advertisements

Similar presentations

Astronomy Notes to Accompany the Text

Advertisements

Section 2: Newton’s Law of Gravitation

Newton’s Law of Universal Gravitation

Astrology is the belief that the location of the stars and planets on the day you were born determines your personality and your life. Not based on.

Famous Astronomers. Ptolemy Thought the Earth was at the center of the universe and that the other planets revolved around it (GEOcentric model) Thought.

Astronomy 101 Section 020 Lecture 4 Gravitation and the Waltz of the Planets John T. McGraw, Professor Laurel Ladwig, Planetarium Manager.

4 Types of Planetary Motion

Newton’s Laws of Motion and Planetary Orbits Gravity makes the solar system go round.

Environmental Science.  Scientists have been researching the sky for almost 3000 years!  Early astronomy was centered in Greece.

Gravitational Potential Energy When we are close to the surface of the Earth we use the constant value of g. If we are at some altitude above the surface.

Universal Gravitation. ISAAC NEWTON (1642 – 1727) The rate of acceleration due to gravity at the Earth’s surface was proportional to the Earth’s gravitational.

Universal Gravitation

PHYS 20 LESSONS Unit 5: Circular Motion Gravitation Lesson 5: Gravitation.

Welcome to Physics JEOPARDY

Newton reasoned that there is a force of attraction between every two objects in the universe.

Origin of Modern Astronomy

Section 7.3 Learning Goals: I will understand key terms: rotation, revolution, tilt, solstice, eclipse I will understand how Earth’s tilt affect the season.

Kepler’s first law of planetary motion says that the paths of the planets are A. Parabolas B. Hyperbolas C. Ellipses D. Circles Ans: C.

In order to stay in a closed orbit, an object has to be within a certain range of velocities: Too slow  Object falls back down to Earth Too fast  Object.

The History of Astronomy brought to you by: Mr. Youngberg.

History of Astronomy - Part II

Gravitation and the Waltz of the Planets Kepler, Galileo and Newton.

Environmental Science.  Scientists have been researching the sky for almost 3000 years!  Early astronomy was centered in Greece.

Essential Idea:  The Newtonian idea of gravitational force acting between two spherical bodies and the laws of mechanics create a model that can be.

Chapter 10 Bellringer Henry David Thoreau once said, “The sun is but a morning star.” What do you think this quotation means?

Unit 06 “ Circular Motion, Gravitation and Black Holes” Gravity in our Solar System.

Describe the gravitational force Define weight and relate to the gravitational force Distinguish between weight and mass Determine the weight of objects.

Chapter 5 Circular Motion; Gravitation. © 2004 Pearson Education Inc., publishing as Addison- Wesley The Force of Gravity What is the universal law of.

Kepler  Galileo and Newton

Gravitation. Gravitational Force and Field Newton proposed that a force of attraction exists between any two masses. This force law applies to point masses.

5-6 Newton’s Law of Universal Gravitation Therefore, the gravitational force must be proportional to both masses. By observing planetary orbits, Newton.

Universal Law of Gravitation and Planetary orbits.

Newton’s Universal Law of Gravitation

Astronomy- The Original Science

Chapter 6 Gravitation and Newton’s Synthesis HW5: Chapt 6: Pb. 11, Pb. 24, Pb. 25 and Chapt. 7: Pb 6, Pb.11, Pb. 16, Pb.19, Pb. 21 –Due Friday, Oct. 9.

SCIENCE A system of knowledge about the natural world and the methods used to find that knowledge.

Gravity and Orbits   Newton’s Law of Gravitation   The attractive force of gravity between two particles   G = 6.67 x Nm 2 /kg 2 Why is this.

Newton’s Law of Universal Gravitation. What do we know about gravity?

1 Tycho Brahe ( ) best observer of his day Made most accurate measurements of his time.

Motion of the Earth, the Moon and PlanetsEarthMoonPlanets.

Daily Science Pg.30 Write a formula for finding eccentricity. Assign each measurement a variable letter. If two focus points are 450 km away from one another.

Newton’s Universal Law of Gravitation Chapter 8. Gravity What is it? The force of attraction between any two masses in the universe. It decreases with.

Midterm Exam Material Covered –Chapter 1 to 6 Format of Exam –Multiple-Choice Questions: 40 to 50 questions –Facts –Concepts –Reasoning –Quantitative --

Comparative Planetology

Bell Work With what you know about Sidereal and Solar days. Postulate what would result if we used Sidereal days to keep track of time instead.

1 Grades 6-8: Introduction. 2 Aerospace Technology Space Science Human Exploration And Development Of Space Earth Science Main Areas Of Research.

Chapter 1 The Copernican Revolution. The planets’ motions Wanderers among the stars Retrograde motion.

History of Astronomy How have ideas about the solar system and our place in it changed over time? How have ideas about the solar system and our place.

8-4.7 :: Explain the effects of gravity on tides and planetary orbits.

Gravity 1.Gravity requires air/atmosphere. 2.The strength of a gravitational force depends on the mass of objects. 3.ALL objects in the Universe attract.

Newton’s Law of Universal Gravitation. Law of Universal Gravitation.

Universal Gravitation Newton’s 4 th law. Universal Gravitation Kepler’s Laws Newton’s Law of Universal Gravity Applying Newton’s Law of Universal Gravity.

The Solar System The Moon The Earth The Sun How do they move? Why doesn’t the Earth fly away? Photos by NASA.

Gravity is a force that pulls objects toward each other. Legend says that Isaac Newton discovered gravity when he saw an apple fall from a tree Sir Isaac.

Gravity and Motion.

SCIENCE GRADE SEVEN – ASTRONOMY

Motions of Earth, The Moon and Planets

Earth’s Systems I can develop a model to describe the cycling of Earth’s materials and the flow of energy that drives this process. MS-ESS2-1.

Chapter 1 Section 2: The study of Earth Science

Universal Gravitation & Satellites

Gravitational Forces 8.E.4B.2 Construct explanations for how gravity affects the motion of objects in the solar system and tides on Earth.

Gravity: A Force and Motion

Universal Gravitation

Earth’s Tides Simulation

Oceans and Atmosphere Oceans are the envelope of water

Grades 9-12: Introduction

The Science of Motion & Orbits

Science Journals – What is gravity?

Presentation transcript:

The Deniers Cycles Within Cycles

Premise… Solar variability and long-term variation in solar luminosity are the key drivers of climate change

The Active Sun Solar Flares and Sunspots The solar constant varies by about 0.1%

A look at one of the claims… Pg 163 – increased solar irradiance causes oceanic heating leading to increased release of CO 2 from ocean A 200 year “super-cycle”? Some basic facts: –Mass of oceans kg –Solar constant 1400 W/m 2 –Radius of Earth 6.38 X 10 6 m

Do Planetary Motions Drive Solar Variability? (De Jager & Versteegh, Solar Physics(2005)229: ) Fairbridge Hypothesis – motion around barycentre* “generates” sunspots –“… His theory, uncovered with the help of NASA and the Jet Propulsion Laboratory, is that sunspot activity is affected by the solar system’s centre of gravity” pg 172 –“The Sun’s own orbit, Fairbridge found, has eight charactersitic patterns …” pg 173 –“This hypothesis, radical for its time and roundly rejected, is now acknowledged as a feature of the history of the planet” pg 174 … Our tentative prediction is for the inception of a new prolonged minimum within the time span of the solar barycentric orbit of (from Fairbridge and Shirley Solar Phys (1987) 110; ) *book is in error – barycentre is just outside solar surface

From De Jager and Verseteegh… Abstract. We examine the occasionally forwarded hypothesis that solar activity originates by planetary Newtonian attraction on the Sun. We do this by comparing three accelerations working on solar matter at the tachocline level: Those due to planetary tidal forces, to the motion of the Sun around the planetary system’s centre of gravity, and the observed accelerations at that level. We find that the latter are by a factor of about 1000 larger than the former two and therefore cannot be caused by planetary attractions. We conclude that the cause of the dynamo is purely solar. Link to Astronomy 200 notes on solar activity

What are the “astronomical” links to climate change? Milankovich Hypothesis… Link to Astronomy 200 notes on climate change