Lesson 1 Flashcards
Six Things That Make Life on Earth Possible (FSRRBO)
Far From Hazard
Sun is stable and long-lasting
Right distance from the sun
Right stuff to host dynamic core
Big moon to stabilize axial wobble
Ozone layer to block harmful rays
helps avoid the dangerous part of the galaxy.
solar system’s circular orbit
contains a massive black hole and releases consistent
bursts of radiation.
galactic core
collapsing stars
supernovae
The presence of this, farther out in the solar system blocking Earth from much of the incoming debris,
Jupiter
Life expectancy of sun
not for another five billion years
Energy given by the sun
239 trillion horsepower, about 35,000 horsepower
Distance from Earth to Sun
93 million miles or 150 million kilometers away
Earth orbits what?
Goldilocks zone
planet receives enough energy to allow water to exist as a liquid on its surface. Too far, and the vital compound stays locked up as ice. Too close, and the water would rapidly evaporate into the atmosphere.
Goldilocks zone
The Earth is the only planet with huge bodies of water with?
70%
is unique because it absorbs large amounts of heat without much alteration in its temperature. Its absorption speed is extremely rapid—about ten times as fast as steel.
Water
In this time period, the seas rapidly soak up a great deal of heat, thus the Earth stays fairly cool.
Day
In this time, the oceans release the vast amounts of heat that they soaked up during the day, which combined with atmospheric effects, keeps the surface from getting too cold.
Night
Radioactive elements that power Earth (PUT)
potassium, uranium, and thorium
serves to deflect most of the solar wind, whose charged particles would otherwise strip away the ozone layer that protects the Earth and the life on it from harmful ultraviolet radiation.
Magnetic Field
added oxygen to the atmosphere and created a high-altitude layer of ozone that shielded early land species from lethal radiation.
Ancient plantlike organisms in the oceans
is a gas in the atmosphere that protects everything living on the Earth from harmful ultraviolet (UV) rays from the sun.
Ozone (O3)
acts as a shield to absorb the UV rays and keep them from doing damage at the Earth’s surface.
ozone layer
The mixture of gases found in the atmosphere (NOA)
Nitrogen = 78%
Oxygen = 21%
Argon = 0.9%.
