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ES - Astronomy #1

ES - Astronomy

QuestionAnswer
What is the most widely accepted theory for how the universe was formed? The Big Bang Theory
What is a Solar Nebula? A Solar Nebula is huge, vast clouds of ice, gas and dust.
What controls how a star evolves? Mass (Size)
What is the order for less massive stars? 1. Nebula, 2. Protostar, 3. Main Sequence Star (Born), 4. White Dwarf, 5. Black Dwarf (Death)
What is the order for more massive stars? 1. Nebula, 2. Protostar, 3. Main Sequence Star (Born), 4. Supernova, 5. Neutron Star (Death) (After Supernova is Black Hole)
What does the Hertzsprung - Russell (H-R) diagram show? It shows the relationship between absolute magnitude (brightness) in relation to their surface temperatures.
What is the most widely accepted theory on how solar system and stars form? The Solar Nebular Theory
What are the basic types of galaxies and how long do they take to collect? The basic types of galaxies are spiral, elliptical(football shaped) and irregular. And galaxies take billions of years to collect.
What galaxy is our solar system a part of? Our solar system is part of the spiral Milky Way.
What is a Light-Year? A Light-Year is the distance light travels in one year. It is the most common unit of measurement used in astronomy.
What is the order of the planets from the Sun? Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
What are asteroids? Asteroids are pieces of a broken planet and are found int he Asteroid Belt which is between Mars and Jupiter.
How many moons are their for Mercury, Venus, Earth, and Mars? There are no moons for Mercury and Venus, one moon for Earth, and two captured moons, or asteroids, for Mars.
What are comets made up of and where do their tails point? Comets orbit the Sun and are made up of frozen gases. The comet's tail always point away from the Sun because of the solar wind (radiating heat waves).
What are Meteoroids? Meteoroids are left over pieces of a comet's tail floating in space.
What is a Meteor? Meteors are when the peices eneter the Earth's atmosphere where they burn up.
What is a Solstice? A Solstice is when the sun is at its most northern point(over the Tropic of Cancer) or at its most southern point (over the Tropic of Cancer).
What is the Summer Solstice? It's the longest day, shortest night and is on June 21st/first day of summer.
What is the Winter Solstice? It's the shortest day, longest night and is on December 21st/first day of winter.
What is the difference between a Lunar and Solar Eclipse? A Lunar Eclipse is when the Earth blocks and Moon and casts a shadow. A Solar Eclipse is when the Moon blocks the Earth and casts a shadow.
Created by: aaron_nikk
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