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ASTR 121|104 FINAL EXAM Questions Well Solved|2024

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Perihelion - ️️when the earth is closest to the Sun on its orbit Leap year - ️️an extra day to help synchronize calendar with seasons Math: Is the year divisible by 4? yes: Is the year divisible by 100? Yes: its a leap year No: is it divisible by 400? Yes: it is a leap year ...

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  • August 26, 2024
  • 11
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ASTR 121
  • ASTR 121
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ASTR 121|104 FINAL EXAM Questions
Well Solved|2024
Perihelion - ✔ ✔ when the earth is closest to the Sun on its orbit

Leap year - ✔ ✔ an extra day to help synchronize calendar with seasons

Math:



Is the year divisible by 4?

yes:



Is the year divisible by 100?

Yes: its a leap year



No: is it divisible by 400?



Yes: it is a leap year

Spring Tides - ✔ ✔ more extreme tides happen when new moon/full moon (Moon and Earth lineup)

Lunar eclipse - ✔ ✔ sun is eclipsed by the Earth, casting a shadow on the Moon

Earth completely blocks the Sun: Total Lunar Eclipse

Earth partially blocks Sun: Partial lunar eclipse

Solar eclipse - ✔ ✔ Sun eclipsed by the Moon, cast a shadow on Earth

Moon completely blocks Sun: Total solar eclipse

Moon partially blocks Sun: Partial solar eclipse

Four seasons - ✔ ✔ Summer Solstice (June 21)

Autumnal Equinox (September 21)

, Winter Solstice (December 21)

Vernal Equinox(March 21)

Foucault's Pendulum - ✔ ✔ When you swing a large pendulum, it will swing in a fixed plane

At a pole, plane of pendulum rotates every 24 hours

New Moon to Third quarter moon - ✔ ✔ about 22 days

Seasons - ✔ ✔ 1.Direct/Indirect sunlight

direct: more concentrate, effective heating

indirect: is less concentrated, less effective heating

2.Longer and shorter daylight hours

- more time above the horizon = more time heating that part of the Earth

- Summer: above horizon

- Spring and Fall: on the horizon

- Winter: below horizon

Tides - ✔ ✔ Since the water is squashed....we have two high and two low tides each day



Tides are primarily caused by the moon

BUT the sun pulls the Earth



Why does water squashes to form two bulges on either side of the Earth?

there is a lot of water and earth's in the way



What happens if the Sun and Moon are perpendicular?Less extreme neap tides



What happens if Sun and Moon line up?

extremely Large spring tides

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