The Moon. The Moon 1)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. The.

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Presentation transcript:

The Moon

1)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. The moon most likely formed at the same time as the Earth.

Giant Impact Theory (The Big Whack) 2) proposes a Mars-sized asteroid collided with Earth 4.5 billion years ago.

3)The “Man” on the Moon

FACTS 4)The moon does not have an iron core It is ¼ the size of the Earth.

5) The moon causes TIDES here on earth.

MOON FACTS 6) 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.

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.

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

8)CRATERS Large round pits formed by impacts of asteroids

9) 2 Types of terrain on the Moon HIGHLANDS-heavily cratered and very old MARIA- dark, flat areas Maria is mostly on the near side. The far side of the moon is beaten up with asteroid impact craters.

Terminator: Day-Night Line

10)TIDES CAUSED BY THE MOON (NO MOON, NO TIDES!) Bay of Fundy, Nova Scotia Difference between high tide and low tide averages 55 feet every 6h 25m

11) Spring Tide EARTH *Spring Tide causes the highest HIGH tide and the LOWEST low tide *alignment – Earth -Moon and -Sun in straight line *Occurs during new moon and full moon

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

MOTIONS OF THE MOON

13) The moon rotates once in the SAME time as it revolves. Because of this, you see the same side of the moon A moon day = a moon year. (1:1)

penumbra moon SUN umbra 14)Lunar Eclipse A lunar eclipse happens when we look at the moon and see Earth’s shadow and see the FULL moon. penumbra moon SUN Earth umbra

15)Solar Eclipse A solar eclipse is when you look at the sun and see the NEW moon blocking the light of the sun.

moon umbra SUN penumbra Solar eclipse moon umbra SUN Earth penumbra

Average Orbital Velocity Average Distance from the Earth The Orbit of the Moon Average Orbital Velocity 2,000 mph 225,000 miles 250,000 miles Perigee (closest point to the Earth) Moon Earth Moon Apogee (farthest point from the Earth) Average Distance from the Earth 240,000 miles

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