Oceanography Chapter 1 – “Origins”
... Our Solar System • Eight planets, asteroid belt, and icy bodies revolve around a star (our sun) in a plane. • Planet composition: – Inner 4 planets are terrestrial (rock/metal) – Outer 4 are gas giants (gas/ice) ...
... Our Solar System • Eight planets, asteroid belt, and icy bodies revolve around a star (our sun) in a plane. • Planet composition: – Inner 4 planets are terrestrial (rock/metal) – Outer 4 are gas giants (gas/ice) ...
Name: Pd: _____ Ast: _____ Solar System Study Guide Vocabulary
... 1) Solar System - A star together with the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it 2) Celestial Objects - Objects such as planets, moons, and stars that are located in the sky or in space 3) Star - A ball of gas in space that pr ...
... 1) Solar System - A star together with the group of planets and other celestial bodies that are held by its gravitational attraction and revolve around it 2) Celestial Objects - Objects such as planets, moons, and stars that are located in the sky or in space 3) Star - A ball of gas in space that pr ...
Revision sheet Q3
... 5. Which thing is a huge ball of hot gases that gives off heat and light? A. a moon B. an orbit C. a star 6. How long does it take Earth to orbit the sun? A. one week B. one month C. one year 7. A group of stars that forms a pattern. What is this pattern called? A. a solar system B. a constellation ...
... 5. Which thing is a huge ball of hot gases that gives off heat and light? A. a moon B. an orbit C. a star 6. How long does it take Earth to orbit the sun? A. one week B. one month C. one year 7. A group of stars that forms a pattern. What is this pattern called? A. a solar system B. a constellation ...
Chapter 4 Chapter 4 - The Solar System The Solar System
... Nebular Theory for Solar System formation Our sun and the planets began from a cloud of dust and gas (nebula) As the cloud contracts under its own gravity, the Sun is formed at the ...
... Nebular Theory for Solar System formation Our sun and the planets began from a cloud of dust and gas (nebula) As the cloud contracts under its own gravity, the Sun is formed at the ...
The Lives of Stars
... Smallest planets closest to sun were blasted with radiation Didn’t have enough gravity to hold on to their hot atmospheres Became rocky inner planet (M,V,E,Ma) ...
... Smallest planets closest to sun were blasted with radiation Didn’t have enough gravity to hold on to their hot atmospheres Became rocky inner planet (M,V,E,Ma) ...
CST Prep- 8th Grade Astronomy 19. Sketch a planet
... 63. Bits of outerspace material that strike the Earth's surface and can be found called ...
... 63. Bits of outerspace material that strike the Earth's surface and can be found called ...
Guided Notes
... Inner Planets – Mercury, Venus, Earth, Mars Asteroid Belt – asteroids and dwarf planet Ceres Outer Planets- Jupiter, Saturn, Uranus, Neptune Kuiper Belt-Pluto, Eris, 800 other objects (AKA Trans-Neptunian Objects or TNOs) Oort Cloud- comets, ice, and dust at the outer limits of the solar system ...
... Inner Planets – Mercury, Venus, Earth, Mars Asteroid Belt – asteroids and dwarf planet Ceres Outer Planets- Jupiter, Saturn, Uranus, Neptune Kuiper Belt-Pluto, Eris, 800 other objects (AKA Trans-Neptunian Objects or TNOs) Oort Cloud- comets, ice, and dust at the outer limits of the solar system ...
Circumstellar habitable zone
In astronomy and astrobiology, the circumstellar habitable zone (CHZ), or simply the habitable zone, is the region around a star within which planetary-mass objects with sufficient atmospheric pressure can support liquid water at their surfaces. The bounds of the CHZ are calculated using the known requirements of Earth's biosphere, its position in the Solar System and the amount of radiant energy it receives from the Sun. Due to the importance of liquid water to life as it exists on Earth, the nature of the CHZ and the objects within is believed to be instrumental in determining the scope and distribution of Earth-like extraterrestrial life and intelligence.The habitable zone is also called the Goldilocks zone, a metaphor of the children's fairy tale of Goldilocks and the Three Bears, in which a little girl chooses from sets of three items, ignoring the ones that are too extreme (large or small, hot or cold, etc.), and settling on the one in the middle, which is ""just right"".Since the concept was first presented in 1953, stars have been confirmed to possess a CHZ planet, including some systems that consist of multiple CHZ planets. Most such planets, being super-Earths or gas giants, are more massive than Earth, because such planets are easier to detect. On November 4, 2013, astronomers reported, based on Kepler data, that there could be as many as 40 billion Earth-sized planets orbiting in the habitable zones of Sun-like stars and red dwarfs in the Milky Way. 11 billion of these may be orbiting Sun-like stars. The nearest such planet may be 12 light-years away, according to the scientists. The CHZ is also of particular interest to the emerging field of habitability of natural satellites, because planetary-mass moons in the CHZ might outnumber planets.In subsequent decades, the CHZ concept began to be challenged as a primary criterion for life. Since the discovery of evidence for extraterrestrial liquid water, substantial quantities of it are now believed to occur outside the circumstellar habitable zone. Sustained by other energy sources, such as tidal heating or radioactive decay or pressurized by other non-atmospheric means, the basic conditions for water-dependent life may be found even in interstellar space, on rogue planets, or their moons. In addition, other circumstellar zones, where non-water solvents favorable to hypothetical life based on alternative biochemistries could exist in liquid form at the surface, have been proposed.