Universe and Solar System
... was very hot and dense. The explosion caused the particles to spread out, cool, and expand. If this is true, then the galaxy is still expanding today… Hubble’s Law: The farther away a galaxy is, the faster it is ...
... was very hot and dense. The explosion caused the particles to spread out, cool, and expand. If this is true, then the galaxy is still expanding today… Hubble’s Law: The farther away a galaxy is, the faster it is ...
Earth Science – Quiz 2
... C) stratosphere D) ionosphere 10. The wavelengths of radiation emitted by Earth are ________. A) longer than those emitted by the Sun B) shorter than those emitted by the Sun C) about the same as those emitted by the Sun D) none of these 11. The longest wavelengths on the electromagnetic spectrum ar ...
... C) stratosphere D) ionosphere 10. The wavelengths of radiation emitted by Earth are ________. A) longer than those emitted by the Sun B) shorter than those emitted by the Sun C) about the same as those emitted by the Sun D) none of these 11. The longest wavelengths on the electromagnetic spectrum ar ...
22 October: The Formation of Stars
... • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
... • When we see massive main sequence stars (spectral class O), we know they are young. • With fairly simple observations, we can find groups of O and B stars (OB associations) ...
Stars and Galaxies Section 1 Stars
... 4. Circumpolar constellations in the northern sky appear to circle around Polaris and are visible all year B. Star magnitude 1. Absolute magnitude—measure of the amount of light a star actually gives off 2. Apparent magnitude—measure of the amount of a star’s light received on Earth C. Space measure ...
... 4. Circumpolar constellations in the northern sky appear to circle around Polaris and are visible all year B. Star magnitude 1. Absolute magnitude—measure of the amount of light a star actually gives off 2. Apparent magnitude—measure of the amount of a star’s light received on Earth C. Space measure ...
8th Grade Midterm Test Review
... about he temperature of the star? • The scientist can assume that the star may have a temperature that is similar to the Sun’s because it is the same color ...
... about he temperature of the star? • The scientist can assume that the star may have a temperature that is similar to the Sun’s because it is the same color ...
Solar Nebula Theory
... Formation of the Moon Properties that need to be explained: - Overall composition is similar to Earth. - Moon’s density is similar to Earth’s crust - Orbital plane is close to Ecliptic - Lack of water on the Moon. ...
... Formation of the Moon Properties that need to be explained: - Overall composition is similar to Earth. - Moon’s density is similar to Earth’s crust - Orbital plane is close to Ecliptic - Lack of water on the Moon. ...
Patterns in the night sky - Laureate International College
... The distance between stars and galaxies is too great to be covered in a human lifetime. AUs are not sufficient. A light-year is the distance that light travels in one year. Light travels at a speed of 300 000 km/s – the fastest! One light year covers 9.5 trillion km. Most stars and galaxies are hun ...
... The distance between stars and galaxies is too great to be covered in a human lifetime. AUs are not sufficient. A light-year is the distance that light travels in one year. Light travels at a speed of 300 000 km/s – the fastest! One light year covers 9.5 trillion km. Most stars and galaxies are hun ...
qwk4
... A. A gravitational force and an electromagnetic force are canceling each other B. Only a gravitational force is acting on the piece of chalk C. Only an electromagnetic force is acting on the piece of chalk D. A gravitational force and a strong nuclear force are canceling each other ...
... A. A gravitational force and an electromagnetic force are canceling each other B. Only a gravitational force is acting on the piece of chalk C. Only an electromagnetic force is acting on the piece of chalk D. A gravitational force and a strong nuclear force are canceling each other ...
Topic 3: Astronomy
... our Sun = yellow = 5,500 C Star Energy - nuclear fusion: four hydrogen atoms fuse together to form one helium atom, giving off huge amounts of energy in the process. This is continually happening in the Sun. Star Evolution & Origin - Stars begin as a large cloud of gas and dust called a nebula, whi ...
... our Sun = yellow = 5,500 C Star Energy - nuclear fusion: four hydrogen atoms fuse together to form one helium atom, giving off huge amounts of energy in the process. This is continually happening in the Sun. Star Evolution & Origin - Stars begin as a large cloud of gas and dust called a nebula, whi ...
Astronomy Final Exam Review
... system formed from a rotating cloud of gas and dust, which condensed to form the sun and all other solar system objects ...
... system formed from a rotating cloud of gas and dust, which condensed to form the sun and all other solar system objects ...
Summary of week 1:
... 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Virgo Supercluster) Quasar: A star-like, extremely luminous object billions of light years away. Located in the core of a larger galaxy. The Visible Universe: The part of ...
... 100,000 light years across and has over 100 billion stars. Clusters of Galaxies (The Local Group) Superclusters of galaxies (The Virgo Supercluster) Quasar: A star-like, extremely luminous object billions of light years away. Located in the core of a larger galaxy. The Visible Universe: The part of ...
Our Cosmic Neighborhood From our small world we have gazed
... is, exerts a gravitational force, and as a result, it will begin to pull itself together. As this accretion continues, the gravity becomes increasingly strong because its strength rises as the mass increases and the distance of the individual atoms decreases. Eventually this interstellar matter enti ...
... is, exerts a gravitational force, and as a result, it will begin to pull itself together. As this accretion continues, the gravity becomes increasingly strong because its strength rises as the mass increases and the distance of the individual atoms decreases. Eventually this interstellar matter enti ...
Notes
... E. _________________________ holds the solar system together 1. We usually think of gravity as the ____________________ that pulls us to the Earth. 2. True definition of gravity is the attractive force between ____________. 3. The more _________ an object has the ________ its gravitational pull. a. ...
... E. _________________________ holds the solar system together 1. We usually think of gravity as the ____________________ that pulls us to the Earth. 2. True definition of gravity is the attractive force between ____________. 3. The more _________ an object has the ________ its gravitational pull. a. ...
Stars are classified by how hot they are (temperature)
... Due to Earth's rotation, we see the sun rise and set, and stars come and go in the night Stars do move in space, but because they are so distant, their motion is hard for us to ...
... Due to Earth's rotation, we see the sun rise and set, and stars come and go in the night Stars do move in space, but because they are so distant, their motion is hard for us to ...
What do we see in the night sky - Laureate International College
... Sun’s gravity exerts a powerful pulling force on the planets. This ________________ is a force of attraction that keeps the planets moving in a ___________ pattern around it. The circular pattern is called an ________. Planets ____________ around the Sun which means that they move in an orbit around ...
... Sun’s gravity exerts a powerful pulling force on the planets. This ________________ is a force of attraction that keeps the planets moving in a ___________ pattern around it. The circular pattern is called an ________. Planets ____________ around the Sun which means that they move in an orbit around ...
Life2
... Stars form mutual gravitational attraction of original matter from Big Bang into clumps called protostars. Hysdrostatic equilibrium is established where outward radiation pressure balances gravity. A Star is born! Early stars had very little metallicity (i.e. no heavy elements). Stellar evolution - ...
... Stars form mutual gravitational attraction of original matter from Big Bang into clumps called protostars. Hysdrostatic equilibrium is established where outward radiation pressure balances gravity. A Star is born! Early stars had very little metallicity (i.e. no heavy elements). Stellar evolution - ...
Chapter 24 Test:Stars/Galaxies
... Our sun is unusual because, unlike most stars in the universe that belong to multiple star systems, it is _____. (a) red, (b) a binary, (c) yellow, (d) alone. ...
... Our sun is unusual because, unlike most stars in the universe that belong to multiple star systems, it is _____. (a) red, (b) a binary, (c) yellow, (d) alone. ...
Name: Astronomy Study Guide Part 1 Define Astronomy
... Day- 24 hours for Earth to rotate once about its axis Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 3 ...
... Day- 24 hours for Earth to rotate once about its axis Month- Length of time for the moon to revolve around earth Year- Length of time for Earth to revolve around sun 365.25 days Calendar- years, months, and days based on our celestial objects Leap Year- Feb 29 once every 4 years to make up for our 3 ...
IK Pegasi
IK Pegasi (or HR 8210) is a binary star system in the constellation Pegasus. It is just luminous enough to be seen with the unaided eye, at a distance of about 150 light years from the Solar System.The primary (IK Pegasi A) is an A-type main-sequence star that displays minor pulsations in luminosity. It is categorized as a Delta Scuti variable star and it has a periodic cycle of luminosity variation that repeats itself about 22.9 times per day. Its companion (IK Pegasi B) is a massive white dwarf—a star that has evolved past the main sequence and is no longer generating energy through nuclear fusion. They orbit each other every 21.7 days with an average separation of about 31 million kilometres, or 19 million miles, or 0.21 astronomical units (AU). This is smaller than the orbit of Mercury around the Sun.IK Pegasi B is the nearest known supernova progenitor candidate. When the primary begins to evolve into a red giant, it is expected to grow to a radius where the white dwarf can accrete matter from the expanded gaseous envelope. When the white dwarf approaches the Chandrasekhar limit of 1.44 solar masses (M☉), it may explode as a Type Ia supernova.