25.1 ORIGIN AND PROPERTIES OF THE MOON

Slides:



Advertisements
Similar presentations
Notes 28.1 Earth’s Moon Std 1F: Know the evidence for the dramatic effects that asteroid impacts have had in shaping the surface of planets and their moons.
Advertisements

Chapter 6 The Earth and Moon. Distance between Earth and Moon has been measured to accuracy of a few centimeters using lasers (at McDonald Observatory)
The Moon Astronomy 311 Professor Lee Carkner Lecture 13.
25.1 ORIGIN AND PROPERTIES OF THE MOON DAHS MR. SWEET
The Moon. Earth’s Moon National Optical Astronomy Observatories composite image.
The Moon. MOON FACTS Natural satellite of earth Gravity 1/6 of earth - WHY? No atmosphere - WHY? Temp. difference: 134 C to -170 C -WHY?
Moons Features and Phases Chapter 28. General Information Satellite: a body that orbits a larger body. Seven planets in our solar system have smaller.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
A look at our nearest neighbor in Space! The Moon Free powerpoints at
25 Earth’s Moon 25.1 Origin and Properties of the Moon
And Eclipses The Moon. What is the Moon? The moon is a natural satellite and reflects light from the sun. The moon is a natural satellite and reflects.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
The Moon. Theories on moon’s creation The Fission Theory: – Part of earth – Thrown out due to extreme rotation – Basin in Pacific Ocean – Earth’s gravity.
The Moon. What is the Moon? A natural satellite One of more than 96 moons in our Solar System The only moon of the planet Earth.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
Section 1: Earth’s Moon Preview Key Ideas Exploring the Moon
What We Learned this Quarter. What is the Moon? A natural satellite One of more than 96 moons in our Solar System The only moon of the planet Earth.
Bellwork Review Questions: Ch 4 1.What is a planet and how is it formed? (think of the video we watched “How Universe was Made”) 2.How do we know how the.
Explore the Moon with GRAIL MoonKAM Ellen Ochoa Astronaut Neil deGrasse Tyson Planetarium Director 3 Joy Crisp Geologist and Project Scientist.
Our Moon and Earth System. The Moon – Our Nearest Neighbor  A natural satellite  One of more than 96 moons in our Solar System  The only moon of the.
A look at our nearest neighbor in Space! The Moon.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
Notes 12-3 The Moon. What is the Moon? A natural satellite The only moon of the planet Earth.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
List all the characteristics you can think of about the moon?
8 TH GRADE SCIENCE THE MOON. HOW WAS THE MOON FORMED? It is about 4.6 billions years old. (Same age as Earth) Scientists have measured the age of the.
Chapter 28 Minor Bodies of the Solar System The Moon.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
Chapter 8 The Moon. Orbital Properties Distance between Earth and Moon has been measured to accuracy of a 3 cm using lasers Distance of the moon from.
The Moon.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
 Satellite – an object that orbits a more massive object  Ex: The Moon  Ex: Moons of other planets  Many of the planets have satellites.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
Chapter 28: The Moon.
A look at our nearest neighbor in Space! The Moon.
A look at our nearest neighbor in Space!
The Moon Origins And Features. Lunar Formation Models The moon is a sister world that formed in orbit around Earth as the Earth formed. The moon formed.
A look at our nearest neighbor in Space! The Moon.
A look at our nearest neighbor in Space! The Moon Free powerpoints at
A look at our nearest neighbor in Space! The Moon Free powerpoints at
 A natural satellite  The only moon of the planet Earth  One of more than 96 moons in our Solar System.
The Moon The Earth's moon is not the largest satellite in the solar system. However, it is closer in size to its planet than any other satellite (with.
A look at our nearest neighbor The Moon. What is the Moon? A natural satellite One of more than 96 moons in our Solar System The only moon of the planet.
A look at our nearest neighbor in Space! The Moon.
 The only natural satellite of our planet is the moon, named “The Moon”  Some publications will refer to it as “Luna”
A look at our nearest neighbor in Space! The Moon Free powerpoints at
A look at our nearest neighbor in Space!
A look at our nearest neighbor in Space!
A look at our nearest neighbor in Space!
A look at our nearest neighbor in Space!
Exploring the Moon.
A look at our nearest neighbor in Space!
The Moon 28.2.
Section 1: Earth’s Moon Preview Key Ideas Exploring the Moon
22.3 – Earth’s Moon.
Section 1: Earth’s Moon Preview Key Ideas Exploring the Moon
A look at our nearest neighbor in Space!
Our Moon and Earth System
Notes The Moon.
A look at our nearest neighbor in Space!
A look at our nearest neighbor in Space!
A look at our nearest neighbor in Space!
Section 1: Earth’s Moon.
A look at our nearest neighbor in Space!
Surface Rocks - There are basically two kinds of surface rock on the Moon.
The Moon – Earth’s Natural Satellite
The Moon.
The Moon – Earth’s Natural Satellite
Chapter 25 – The Moon Section 25.1
Presentation transcript:

25.1 ORIGIN AND PROPERTIES OF THE MOON CHAPTER 25 EARTH’S MOON 25.1 ORIGIN AND PROPERTIES OF THE MOON

What is the Moon? A natural satellite One of more than 150 moons in our Solar System The only moon of the planet Earth

YouTube - How the Moon was born! ORIGIN OF THE MOON SCIENTIST BELIEVE THE MOON FORMED WHEN A LARGE OBJECT ABOUT THE SIZE OF A PLANET HIT EARTH YouTube - How the Moon was born!

DEVELOPMENT OF THE MOON SURFACE LAYERS MELTED BY FREQUENT IMPACTS AND CREATED CRATERS FORMED MAGMA OCEAN LIGHTER MATERIALS ROSE TO SURFACE – COOLED AND HARDENED 4.0 – 3.5 BILLION YEARS AGO IMPACTS DECREASED OVER MILLIONS OF YEARS MAGMA RICH IN IRON ERUPTED FILLING LARGE BASINS CREATING MARIA

MOON TODAY CORE INACTIVE IMPACTS FROM MICROMETEOROIDS CONTINUE TO CHANGE SURFACE THROUGH IMPACTS AND EROSION MOON HAS NO ATMOSPHERE TO BURN THEM UP

PROPERTIES AND FEATURES OF THE MOON Same side of moon faces earth – geosynchronous orbit About 384,000 km (240,000 miles) from Earth 3,476 km (2,155 miles) in diameter (about ¼ the size of Earth) Density 3.3g/cm3 1/6 Earth’s gravity

Far Side of the Moon First seen by Luna 3 Russian space probe in 1959 Surface features different from near side More craters Very few maria Thicker crust

Layers of the moon Mantle Near side crust (about 65 km thick) Far side crust (about 150km thick) Iron Core

The Moon’s Surface No atmosphere No liquid water Extreme temperatures Daytime = 130C (265°F) Nighttime = -190C (-310 F

Maria Originally thought to be “seas” by early astronomers Formed from lava coming up through cracks Darkest parts of lunar landscape Mostly basalt rock made of feldspars, pyroxene, youngest rocks

Maria

Mascons and Rilles Mascons are regions of higher gravity Rilles are long cracks in the maria

RILLE

Highlands Mountains up to 7500 m (25,000 ft) tall Thought to be original crust Formed from impacts Lighter in color than maria Rocks samples similar to Gabbro and Breccia – rocks made of angular fragments – impacts melted rocks together

Craters and Rays Circular hollows formed by meteor impacts Range: microscopic to 2100 km diameter Most named after people Same age

How did this spherule come to be on the Moon?

Explanation: When a meteorite strikes the Moon, the energy of the impact melts some of the splattering rock, a fraction of which might cool into tiny glass beads. Many of these glass beads were present in lunar soil samples returned to Earth by the Apollo missions. Pictured above is one such glass spherule that measures only a quarter of a millimeter across. This spherule is particularly interesting because it has been victim to an even smaller impact. A miniature crater is visible on the upper left, surrounded by a fragmented area caused by the shockwaves of the small impact. By dating many of these impacts, astronomers can estimate the history of cratering on our Moon.

Copernicus crater rays

Lunar soil Regolith – loose rock material Range: fine dust to sand grains 2 – 20 m deep Contain no water or organics Formed by smashing impacts Composition – chips of varying minerals and glassy beads