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Science ch. 3 review

The Solar System

What space object is perceived to be at the center of the solar system in a geocentric model Earth
What space object is perceived to be at the center of the solar system in a heliocentric model the sun
What model did Galileo's discoveries support? heliocentric
What did Kepler find that the orbit of each planet is an ellipse
What does the solar system consist of the sun, the planets and their moons, and a series of smaller objects that revolve around the sun
define geocentric an Earth-centered model
define heliocentric a sun-centered model
define ellipse an oval shape which may be elongated or nearly circular
what does the sun's interior consist of the core, radiation zone, and convection zone
what does the sun's atmosphere consist of the photosphere, chromosphere and corona
what do features on or just above the sun's surface include sunspots, prominences, and solar flares
define core central region
define nuclear fusion hydrogen atoms join together to form helium
define radiation zone a region of very tightly packed gas where energy is transferred mainly in the form of electromagnetic radiation
define convection zone the outer-most layer of the sun's interior
define photosphere the inner layer of the sun's atmosphere
define chromosphere the middle layer of the sun's atmosphere
define corona the outer layer that looks like a white halo around the sun
define solar wind the corona gradually thinned into streams of electrically charged particles
define sunspots areas of gas on the sun's surface that are cooler than the gases around them
define prominences huge reddish loops of gas
define solar flares eruptions on the sun
which planets are small and dense and have rocky surfaces the four inner planets
Which planet in the solar system is unique by having liquid water Earth
What planet is the smallest terrestrial planet Mercury
which planet's internal structure is similar to Earth's Venus
define terrestrial planet the inner planets
define greenhouse effect the trapping of heat by the atmosphere
which planets are much larger and more massive than Earth Jupiter, Saturn, Uranus and Neptune
What planet is the largest and most massive planet in the solar system Jupiter
What planet has the most spectacular rings Saturn
Which planet's axis of rotation is tilted at an angle of about 0 degrees from the vertical Uranus
What planet is a cold, blue planet whose atmosphere contains visible clouds Neptune
which planet has a solid surface and is much smaller and denser than the outer planets Pluto
define gas giant the outer planets
define ring a thin disk of small particles of ice and rock
what are loose collections of ice, dust, and small rocky particles whose orbits are usually very long, narrow ellipses comets
where do most asteroids revolve around the sun between the orbits of which two planets Mars and Jupiter
What do meteoroids come from comets or asteroids
define comet a "dirty snowball" about the size of a mountain
define coma clouds of gas and dust form a fuzzy outer layer
define nucleus the solid inner core of a comet
define Kuiper Belt a doughnut-shaped region that extends from beyond Neptune's orbit to about 100 times Earth's distance from the sun
define Oort Cloud a spherical region of comets that surrounds the solar system out to more than 1000 times the distance between Pluto and the sun.
define asteroids rocky objects that are too small and numerous to be considered full-fledged planets
define asteroid belt the region the the solar system where most asteroid revolve around the sun between the orbits of Mars and Jupiter
define meteoroid a chunk of rock or dust in space
define meteor a meteoroid that enters Earth's atmosphere
define meteorite meteoroids that pass through the atmosphere and hit Earth's surface
what makes Earth suitable for life liquid water, suitable temperature range, and atmosphere
what do scientists hypothesize about life on Mars that Mars may have once had the conditions for life to exist
How might there be life on Europa if there is liquid water
define extraterrestrial life life other than that on Earth
Created by: wazoid23