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Presentation transcript:

For this presentation only write what is underlined in your worksheet title : THE MOON

The Moon

FACTS ABOUT THE MOON

When did the MOON form? When the moon formed, it was about 14,000 miles away from us. Now it is 250,000 miles away from us. 1) The moon most likely formed at the same time as the Earth and the solar system because the oxygen in the rocks on the moon is molecularly similar to the oxygen in the rocks on Earth.

How did the moon form? There are three theories on how the moon might have formed: There are three theories on how the moon might have formed: One theory is… One theory is…

2) proposes a Mars-sized asteroid collided with Earth 4.5 billion years ago. Debris from both the asteroid and the Earth recombined to form the Moon. The Giant Impact Theory (The Big Whack)

The “Man” on the Moon

FACTS The moon does not have an iron core The moon does not have an iron core 3) It is ¼ the size of the Earth. 4) The moon causes TIDES here on earth. 5)The gravity of the moon is 1/6 that of Earth’s gravity. If you weighed 100 lbs here, then you would weigh 16 lbs on the moon.

TIDES CAUSED BY THE MOON (NO MOON, NO TIDES!) mainly by differences in how much the moon’s gravity pulls on different parts of Earth

Bay of Fundy, Nova Scotia Difference between high tide and low tide averages 55 feet every 6h 25m

6) Spring Tide causes the highest HIGH tide and the LOWEST low tide 7) Spring Tide alignment – Earth Moon and Sun in a straight line 8) Occurs during new moon and full moon

9) Neap tide occurs during 1 st Quarter and 3 rd Quarter 10) Earth-moon-sun at right angle

TYPES OF TERRAIN (LAND) ON THE MOON

CRATERS 11) Large round pits formed by impacts of asteroids

2 Types of terrain on the Moon 12a) HIGHLANDS- heavily cratered and very old 12b) MARIA- dark, flat areas Maria is mostly on the near side. The far side of the moon is beaten up with asteroid impact craters. Maria is mostly on the near side. The far side of the moon is beaten up with asteroid impact craters.

13) Terminator: Day-Night Line Terminator

Buzz Aldrin’s Footprint on the Moon The Moon’s surface is covered with Regolith (dust )…. It varies between 1 inch – 15 km in depth. Powdered rock created by billions of years of impacts.

What is it like on the moon? 14) no weather - no wind 15) no atmosphere to protect you from extreme temperatures of space. 16) Very cold (- 173 °C ) AND hot (+100 °C) 17) It has no magnetic field. Compasses don’t work.

The Moon has No Atmosphere…. the sky is black ! The Moon lacks the necessary gravity to hold an atmosphere.

MOTIONS OF THE MOON

The Moon’s Move 18) The moon rotates once on its axis in the SAME amount of time as it revolves around Earth. A moon day = a moon year. (1:1) Because of this, you see the same side of the moon (you never see the dark side of the moon.)

The Orbit of the Moon Earth Moon Perigee (closest point to the Earth) Apogee (farthest point from the Earth) 250,000 miles225,000 miles Average Orbital Velocity 2,000 mph 19)Average Distance from the Earth 240,000 miles

ECLIPSES

Lunar Eclipse A lunar eclipse happens when we look at the moon and see Earth’s shadow Occurs during the FULL moon. In order for this to happen, the Earth must be in between the sun and the FULL moon, and in SUN EARTH MOON

Solar Eclipse A solar eclipse is when you look at the sun and see the moon blocking the light of the sun. Occurs during the NEW moon phase In order: sun, NEW moon, and Earth.

Phases of the Moon There are eight phases of the moon. The first phase begins with a new moon with the light reaching the right side of the moon first. The names of the phases are 1. New moon 5. Full Moon 2. Waxing Crescent 6. Waning gibbous 3. First Quarter7. Third Quarter 4. waxing Gibbous 8. Waning Crescent

Phases of the Moon * Farside: side facing Away from the Earth * Nearside: side facing the Earth * Darkside: side without sunlight… it’s dark there.. “Night” * Lightside: side with sunlight… it’s light there.. “Daytime” !!! 225 ° 270 ° 315 °

Questions about the moon? In which phase would the moon be in to see a lunar eclipse? Answer: a full moon How are the Earth, Moon and Sun aligned for a spring tide? In a straight line. Why do we always see the same side of the moon (like the face on the full moon). Rotation = revolution, or day = year on the moon.