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Astronomy

QuestionAnswer
What is waning? The phases of the moon like waning gibbous and crescent where the visible surface is decreasing
What is waxing? The phases of the moon like waxing crescent and gibbous where the visible surface is growing
What is a rotation? The spinning of an object on its axis.
What is a revolution? A celestial object in orbit around another object. (or an elliptical path)
What are the most common elements in the universe? Gases: Hydrogen and Helium
What is a light year? The distance that light travels in one year
What side is the light on in a waxing moon? The Right
What side is the light on in a waning moon? The Left
What is the order of the moon phases? New moon, waxing crescent, first quarter, waxing gibbous, full moon, waning gibbous, last/third quarter, waning crescent.
Which direction do the moon phases go on a diagram? Counter Clockwise
How long is the moon's revolution period? 27.3 days
How long is the period between new moon and full moon? 14 days
How long does it take for the moon to go through all phases? 29.5 days
1 moon phase=how many days? about 3.5 days
Terrestrial Planets The inner planets that are rocky and solid: Mercury, Venus, Earth, Mars
Gas Giants The outer planets that are larger and composed of gas: Jupiter, Saturn, Uranus, Neptune
Inner Planets The planets on the side of the asteroid belt closest to the sun that are solid and rocky and small.
Outer Planets The planets on the side of the asteroid belt furthest from the sun that are large and don't have solid surfaces.
What are asteroids? Large chunks of rock and metal that orbit the sun and have craters on their surfaces
What is the Asteroid Belt? The cluster of asteroids between the orbits of Mars and Jupiter where most asteroids reside
Three parts of a comet and what they are Nucleus: inner layer of a comet's head Coma: Outer layer of a comet's head Tail: gas and dust trail at end of comet
Which direction does the tail of a comet face? Away from the Sun
What causes the tail of a comet? gas and dust being pushed away from the comet due to solar wind
What is the photosphere of the sun? The part of the sun that we can see and that gives off heat and light (the surface of the sun)
What is the corona? the 3rd and hottest layer of the sun that extends out into the solar system
What is the Solar Wind? A stream that carries particles out from the sun
What is a sunspot? The coolest parts of a sun that we see as a dark spot
What is the source of the sun's energy Nuclear Fusion
What is apparent magnitude The brightness that a star is from Earth
What is absolute magnitude? The actual brightness of a star
In what stage are most of the stars on the HR Diagram Main Sequence Stars
What is a Nebula? A cloud of dust and gas that is like a star nursery and consists of hydrogen and helium (can also have dead/dying stars)
What is a Meteor? A meteoroid that has entered Earth's atmosphere (shooting stars)
What is a Meteoroid? Rocky objects that orbit the sun, are composed of iron and nickel, and are much smaller than asteroids
What is a Meteorite? A meteoroid that has made contact with Earth's surface. Most are very small and they are composed of stone and/or iron
What is the difference between mass and weight? Mass is the amount of matter in an object. Weight is the gravity exerted on that object
Explain a life cycle diagram. All {Nebula-Protostar-Main Sequence} Avg Mass {Red Giant, Planetary Nebula, White Dwarf, Black Dwarf} High Mass and Extreme High Mass {Red Supergiant, Supernova} High {Neutron Star} Extreme High {Black Hole}
Where are the hottest and brightest stars on the HR Diagram Top Left
What stars does the HR Diagram show Main Sequence, Supergiant, Giant, and White Dwarfs
When does Nuclear Fusion occur in a star? Proto-star phase
Which way does the Northern Hemisphere facing in Summer? Winter? Towards the sun. Away from the sun.
What is a Solstice? when the sun reaches its highest or lowest point in the sky at noon (Summer and Winter Solstice)
What is an Equinox? when the sun crosses the plane of the equator-equal day and night (Vernal and Autumnal Equinox)
Created by: Ellalight
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