The Essential Cosmic Perspective - Test #1 (Ch.1, 2, 3, 4, 5) WFU with correct questions and answers.

The Essential Cosmic Perspective - Test #1 (Ch.1, 2, 3, 4, 5) WFU with correct questions and answers. How far is a light year? - correct answers.About 10 trillion (10^13) km or actually 9.46 trillion km Tell me the groups and classifications of the celestial bodies - correct answers.Superclusters, galaxy clusters, galaxy, solar system, planet How far is an AU? - correct answers.From Earth to the sun, or 150 million km How far is a light second? - correct answers.300,000 km How long does it take light to reach Earth from the moon and from the sun? - correct answers.1 second, 8 minutes What do you call asteroids, comets, and other small stuff orbiting stars? - correct answers.Small solar system bodies What is the expansion (of the universe)? - correct answers.The increase in the average distance between galaxies as time progresses How old is the universe? - correct answers.About 14 billion years How far away is the boundary of the observable universe? - correct answers.14 billion light-years How many galaxies are in the observable universe? - correct answers.100 billion What is the ecliptic plane? - correct answers.The orbit of the Earth How long does it take our solar system to orbit the galaxy? - correct answers.230 million years Constellation - correct answers.a region in the sky celestial sphere - correct imaginary sphere that the stars and constellations lie on north celestial pole - correct point directly over Earth's North Pole South Celestial pole - correct point directly over Earth's South Pole celestial equator - correct ction of Earth's equator into space, makes a complete circle around the celestial sphere ecliptic - correct path the sun follows as it appears to circle around the celestial sphere once each year. it crosses the celestial equator at 23.5 angle, because that is the tilt of Earth's axis. local sky - correct sky as seen from wherever you happen to be standing horizon - correct boundary between the Earth and the Sky zenith - correct point that lies directly overhead meridian - correct nary half-circle stretching from the horizon due south, through the zenith, to the horizon due north. angular size - correct angle it appears to span in your fuel dog view angular distance - correct angle that appears to separate 2 objects circumpolar - correct near the north celestial pole that do not rise or set. they make counterclockwise circles around the north star. latitude - correct res north-south positions longitude - correct res east-west positions summer (June) solstice - correct answers.June 21, is the moment when the Northern Hemisphere is tipped most directly toward the Sun winter (December) solstice - correct answers.December 21, is the moment when the Northern Hemisphere is tipped most directly away from the Sun spring (March) equinox - correct answers.March 21, is the moment when the Northern Hemisphere goes from tipped slightly away from the Sun to being tipped slightly toward the Sun. fall (September) equinox - correct s around September 22, the moment when the Northern Hemisphere first stars to be tipped away from the sun. precession - correct answers.a gradual wobble that changes the orientation of Earth's axis in space eclipse - correct the earth sun and moon fall into a straight line lunar eclipse - correct earth lies directly between the sun and the moon, so that the earth's shadow falls on the moon solar eclipse - correct lies directly between the sun and earth so that the moon's shadow falls on Earth. people in the shadow will see the sun blocked. umbra - correct al area where light is blocked from the shadow of the moon or earth from an eclipse penumbra - correct where light is partially blocked from the shadow of the moon or earth from an eclipse total lunar eclipse - correct the sun, earth, and moon are nearly perfectly aligned partial lunar eclipse - correct perfect alignment of the sun earth and moon. only part of the full moon will pass through the umbra (with the rest in the penumbra) we will see a... penumbral lunar eclipse - correct the moon passes only through earth's penumbra totality - correct time during which the moon is entirely engulfed in the umbra total solar eclipse - correct moon is relatively close to Earth in it's orbit, the moon's umbra touches a small area of earth's surface partial solar eclipse - correct part of the sun is blocked from view annular eclipse - correct answers.a ring of sunlight surrounding the moon