Goh Cheng Leong Chapter 1 YouTube Lecture Handouts

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Watch video lecture on YouTube: Goh Cheng Leong Chapter 1: The Earth and the Universe Goh Cheng Leong Chapter 1: The Earth and the Universe
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Universe

  • Galaxy – stars in clusters

  • Milky Way – 100,000 million stars

  • Light from nearest star – 4 years

  • Light from sun – 8 minutes

  • Light from moon – a second

Solar System

  • Sun – temperature 6000℃ to 20 million ℃; 3 lakh times larger than earth

  • Mercury – smallest, closest, 36 million miles, 88 days revolution

  • Venus – twin planet of earth

  • Earth – satellite moon (revolves eastward once in 27 days)

  • Mars – dark patches

Solar System

  • Jupiter – Largest; hydrogen, helium and methane, circular light, dark band, 12 satellites, very cold (-130 )

  • Saturn – 3 rings, 9 satellites, second largest, revolution takes 29.5 years

  • Uranus – bluish-green, 50 times large and 15 times heavy, 5 satellites, orbits east to west

  • Neptune – 2 satellites, colder

  • Pluto – planetoid, orbits in 247 years

Shape of Earth

  • Equatorial circumference: 24,897 miles

  • Polar circumference is less by 83 miles

  • Equatorial diameter: 7,926 miles

  • Polar diameter is shorter by 26 miles

  • Geoid shape

Evidence of Sphericity

  • Circum-navigation of Earth

  • Circular Horizon

  • Ship’s Visibility

  • Sunrise and Sunset

  • Lunar Eclipse

  • Spherical planetary bodies

  • Driving poles on level ground on curved earth

  • Aerial photographs

Earth’s Movement

  • Rotation – from west to east

  • Revolution – 18.5 miles per second, completes in 365 days, axis is inclined at

Mathematical Calculation of Location

  • Latitude – angular distance in degree from center of earth - parallels

  • Longitude – angular distance along equator – meridian

Longitude and Time

  • EGA

  • WLS

Longitude And Time of Goh Cheng Leong Image - 1

Longitude and Time of Goh Cheng Leong Image - 1

Longitude And Time of Goh Cheng Leong Image - 1

Longitude And Time of Goh Cheng Leong Image - 2

Longitude and Time of Goh Cheng Leong Image - 2

Longitude And Time of Goh Cheng Leong Image - 2

International Dateline of Goh Cheng Leong Image- 3

International Dateline of Goh Cheng Leong Image- 3

International Dateline of Goh Cheng Leong Image- 3

International Dateline of Goh Cheng Leong Image- 4

International Dateline of Goh Cheng Leong Image- 4

International Dateline of Goh Cheng Leong Image- 4