Earth-Sun Relationships The Reasons for the Seasons.

Slides:

Advertisements

Similar presentations

Earth-Sun Relationships

Advertisements

THE EARTH IN SPACE THE SEASONS The Earth in Space.

Chapter 2 Where We’re Headed: Solar Energy, Seasons and the Atmosphere

Seasons on Earth All Figures from planet.html By Diana L. Duckworth Rustburg High School Campbell County, VA.

Earth’s Motions, Solar Radiation, and the Seasons

Motions of the Earth.

Chapter 2 Solar Energy to Earth and the Seasons Robert W. Christopherson Charlie Thomsen.

SEASONS AND THE SUN PATH

Chapter 1: Introduction to Earth

Insolation Insolation = Incoming Solar Radiation Insolation In = Heat Out.

The Reason for the Seasons

© 2007, John Wiley and Sons, Inc. Physical Geography by Alan Arbogast Chapter 3 Earth-Sun Geometry Lawrence McGlinn Department of Geography State University.

Natural Environments: The Atmosphere GE 101 – Spring 2007 Boston University Myneni Lecture 04: Orbiting Sphere Jan (1 of 16) Outline Further Reading:

Introduction to World Geography Mr. Healey

December March June September

Equinoxes, Solstices, Insolation, and the Analemma

ASTRONOMY Dr. White Mrs. Griffin. Learning from Light: The Big Bang Objective: Explain the origin of the universe according to the Big Bang theory

The Sun, Seasons and Weather

Chapter 2 Solar Energy to Earth and the Seasons Robert W. Christopherson Charlie Thomsen © 2012 Pearson Education, Inc.

Earth-Sun Relationship. 00 0  latitude – Equator 0  longitude – Prime Meridian (has no affect on climate)

The Earth in Space. The Earth’s Gravity ► – force of attraction between all matter. ► Gravity – force of attraction between all matter. ► – the force.

Earth-Sun Relationships. Key Concepts  Insolation: The solar radiation incident on a unit horizontal surface at the top of the atmosphere.  Essentially,

24.2 Sun and Seasons

Days, Years & Seasons. Days and Nights Rotation: the Earth turns around on its axis 1 day=24 hours (one rotation) One half of the Earth is always in light.

The Seasons A Northern Hemisphere Perspective. The Seasons Definitions Axis: An imaginary axle that passes through the North and South Poles Rotation.

Movements of the Earth The Earth’s Motion in Space.

Earth/Sun Relationship. Temperature The condition of the atmosphere at a given place and time.

What causes seasons? The tilt of the Earth on its axis The 23.5° tilt is caused by the interaction between the Moon and the Earth.

How do they work together to help life survive? Seasons

Earth’s Orbit 4/29/14 IN: What causes the different seasons on the Earth? IN: What causes the different seasons on the Earth?

Rotation: Its effects 1.Day & Night. 2.Bulging of the Earth at the Equator and flattening at the poles. 3.The deflection of winds & ocean currents. 4.Tides.

Earth-Sun Relationships The Reasons for the Seasons.

Vernal Equinox, the First Day of Spring By Dr. Harold Williams of Montgomery College Planetarium

REVIEW The Electromagnetic Spectrum Figure 2.5 Figure 2.6.

Climates, Seasons, & Days

The Seasons Seasonality: the variation of the sun’s position over the horizon; the changing daylength during the year Seasons result from: variations in.

What causes the seasons?

Part 1: The Earth – Moon System

Motions of the Earth Rotation The Earth rotates on an imaginary axis. ‘Rotation’ is the spinning of the Earth, from west to east, on its axis. It makes.

Earth’s Physical Geography Chapter 2, Section 1. Our Planet, the Earth The Earth, sun, planets, and stars are all part of a galaxy, or family of stars.

Reason for Seasons Aim: How does the tilt of Earth’s axis and Earth’s movement cause seasons?

Earth-Sun Relationships The Reasons for the Seasons.

Aim: What are some of the results of Earth’s Motions? I. Earth’s Motions A. Rotation (Spinning) 1. Day and Night Why does the sun rise in the east and.

Earth in Space EARTH, THE SUN, AND THE SEASONS. Earth, the Sun, and the Seasons  Why is Earth colder in winter than in the summer?  Not because Earth.

Earth-Sun Relationships The Reasons for the Seasons.

Seasons. Seasons happen because of Earth’s tilt on its axis AND revolution around the Sun. Axis- imaginary line drawn from the north to the south pole.

The Sun’s Path. Summer Solstice (approximately June 20-21) North Pole: The North Pole (90 degrees north latitude) receives 24 hours of daylight, as it.

Lab 3: Earth Sun-Geometry

Chapter 2 Solar Energy, Seasons and the Atmosphere

Reason for Seasons Aim: How does the tilt of Earth’s axis and Earth’s movement cause seasons?

Rotation and Revolution

The Sun’s Motion and The Four Seasons

Insolation Insolation = Incoming Solar Radiation Energy in = Energy out or, Insolation In = Heat Out (Earth only emits heat)

Solar System and the Earth-Sun Relationship

Objectives 2f and 4c 2f = 3/3 = 100% 4c = 11/11 = 100%

LINES OF LATITUDE AND LONGITUDE

Climates, Seasons, & Days

Climates, Seasons, & Days

Movement of the Earth Seasons & Movemements.

Earth-Sun Relationships

Reasons for the Seasons

Tilt of the Earth’s Rotational Axis

Seasons What are they?.

Reasons for the Seasons

Earth – Sun System Seasons.

Presentation transcript:

Earth-Sun Relationships The Reasons for the Seasons

Tilt of the earth on its axis. The earth is tilted 23.5º from perpendicular to the plane of the ecliptic. Tilt is currently constantly toward Polaris

Why is it hot in the tropics and cold at the poles? The Earth ’ s surface is curved relative to the incoming solar radiation. Direct rays (most intense) are always in the tropical latitudes (23.5 º S to 23.5º N) As a result, solar radiation is diffuse in the polar regions.

What causes the seasons? rotation of the earth on its axis? revolution of the earth around the sun 23.5 O tilt of the earth axis from perpendicular to the plane of the ecliptic polarity (axial parallelism)

Rotation of the Earth Rotate west to east or ‘ counter-clockwise ’ (when viewed from the North Pole) –sunset and sunrise Rotation period is 24 hours per solar day (23 hours 56 minutes with respect to other stars)

Revolution of the earth Period of revolution is solar days Elliptical orbit (plane of the ecliptic) Perihelion million miles (Jan. 4) Aphelion million miles (July 5) 93 million miles average distance

SOLSTICES SUMMER, JUNE 21 WINTER, DECEMBER 21 Where are the overhead rays of the sun on these days? Which parts of the earth are in darkness and light? For how long?

Tropic of Cancer at 23.5º N Tropic of Capricorn at 23.5º S Arctic Circle (66.5 º N) Antarctic Circle (66.5º S) Notice these four important parallels. Where do they occur? Why?

EQUINOXES VERNAL, MARCH 21 AUTUMNAL, SEPTEMBER 21

Rays Direct Occurs when the energy from the sun hits the earth in a concentrated manner Indirect When energy from the sun contacts the earth at an indirect angle.