Earth Science
Cards (70)
- 3 Theories about the Formation of the Universe
- It says the universe as we know it started with an infinitely hot and dense single point that inflated and stretched
- It is the leftover radiation from the Big Bang or the time when the universe began.
- Proposed by physicist Alan Guth and Andrei Linde in 1980s
- According to this theory, the early universe went under rapid expansion in space-time
- Cosmic Inflation Theory was proposed by:
- States that the universe is always expanding
- Steady State Theory was first proposed by:
- Steady State Theory was revised by:
- The 3 theories of the formations of the solar system are.
- billion years ago, a star system was formed from a rotating cloud of gas called...
- It was the model used to explain the formation and evolution of the solar system.
- When the gas cooled, the nebula began to shrink, and as it became smaller, it rotated faster, casting off rings of gas and forming a
- The remaining part of the nebula, which has the most mass, formed the
- Proponents of Nebular Hypothesis
- Describes the formation of the planets asserted in the nebular hypothesis.
- Planetesimal Theory states that in the early period of the solar system, planets were formed from the accretion of
- Planetesimal Theory was proposed by
- Planetesimal Theory was developed by
- According to the theory, a star passed close to the sun where the tidal force, or the secondary effect of gravitational pull between the passing star and the sun, drew large amount of matter out of the sun and the passing star.
- Tidal Theory was developed by
- The four inner planets in the solar system are called..
- The 4 Terrestrial or Telluric Planets are.
- The other four outer planets are called.
- The 4 outer planets are
- Planets that are composed primarily of silicate rocks or metals.
- Mostly composed of helium and/or hydrogen.
- How old is Earth?
- These expelled poisonous gases that composed much of Earth’s early atmosphere.
- The first organisms came from the..
- Habitable zones of stars to search for extraterrestrial life that serves as the orbits of planets that are neither too hot nor too cold for life to exist.
- Is the region around a star where the conditions could potentially be suitable to sustain life on a planet within this region.
- Earth’s systems have finally settled, it was presumed that the systems evolved into four subsystems namely:
- States that organisms interact with their inorganic surroundings and create a self-regulating, complex system that helps maintain the conditions necessary for life on the planet.
- The solid portion of Earth that includes the interior structure, rocks and minerals, landforms, down to the deep depths of the core and the processes that shape Earth.
- Earth's 3 main layers
- Consists of a 5-to 70-km thick layer of oceanic and continental crust overlaying another thick layer of rocks and metals. Composed of elements that include oxygen, silicon, aluminum, iron, calcium, sodium, potassium and magnesium.
- This boundary was discovered by Croatian seismologist Andrija Mohorovicic in 1909. Recognized as the transitional boundary that divides the crust and the mantle.
- Made of solid rock and considered as the largest part of Earth and makes 84% of Earth’s total volume.
- The upper part of the mantle directly below the crust.