Second Quiz Flashcards
The study of objects on the heavens.
Astronomy
What is astronomy called to be?
The oldest science
It is an immense fusion reactor in space
Star
What are stars consist of?
Hydrogen and helium
Stars are held by?
Gravity
The star radiates energy generated through?
Nuclear fusion
What is the nearest star to the earth
Sun
What do the stars transmit?
Electromagnetic radiation in the form of photons
Primary source of data on distant stars
Electromagnetic radiation
It is an energy in form of photons streaming through space at 3x10^8m/s
Electromagnetic radiation
What are the measuring aspects of photons?
Wavelength(spectroscopy)
Intensity(light meter)
Direction(altitude and azimuth)
Variations of wavelengths intensities and position with time
Through those measurements, scientists are able to understand..
Distribution in space
Physical characteristics such as mass and composition
Histories
Future behavior
A device that focus and concentrate radiation from distant objects
It is a visible light
Telescope
The scientist who modified and was first to see the telescope
Galileo galilei
The biggest telescope
Keck telescope on maua kea
Soon to be the worlds largest telescope
The giant Magellan telescope
Where is the soon to be the worlds largest telescope found?
Las campanas observatory in the Andes mountains of northern chile
When is the soon to be telescope scheduled for completion?
2018
It is a discrete bundle or quantum of electromagnetic energy. It is always in motion at a constant speed of light
Photons
It is a mystery in science where they do this mostly in Pennsylvania which are the rocks that have the property of resonating like a bell when struck
Ringing of the rock
Other kind of telescopes
Chandra x-Ray observatory Fermi gamma ray telescope James Webb space tel. Planck observatory Kepler observatory
Structure of the sun
Core Radiative zone Convective zone Photosphere Chromosphere Corona Sunspot Granules Prominence
What is the center of the sun called?
Stellar core
It is the 10% of the Suns total volume
Stellar core
It is the Suns furnace, nuclear rage and energy generated
Stellar core
The energy in the stellar core takes place through
Collisions of high energy particles like X-rays
It is hydrogen rich and has a turbulent upper of 200,000
Convection
Emits most of the light we see. It is the lowest layer of the sun. It is where the Suns energy is released as light.
Photosphere
Only part that we see
150 km into the sun
Any deeper and the stellar material becomes too dense to be transparent
Light reaches earth in about
8 minutes
It is marked by bright bubbling granules of plasma and darker cooler sunspots, which emerged when the Suns magnetic field breaks through the surface. It is also the source of solar flares
Photosphere
They appear to move across the Suns disk
Sunspots
Emits a reddish glow as super heated hydrogen burns off but the red rim can only be seen through solar eclipse, weak light
Chromosphere
Third layer of the sun. It can only be seen during a total solar eclipse. It appears white streamers or plumes of ionized gas that flow outward to space
Corona
It constantly emits particles into space, electrically charged atoms-ions like hydrogen and helium
Sun
Solar wind +magnetic field
Aurora boreal is
Is the process of making single heavy nucleus from two lighter nuclei, the nucleus is made by fusion releasing large amounts of energy
Nuclear fusion
Nuclear fusion hydrogen burning steps
P+p. D+e-+neutrino+energy
D+P. 3He+proton+energy
3he+3He. 4he +2protons +photon+energy
Incredibly dense and small. It does not give off much light and would have gone undetectedif some of them didn’t exhibit unusual behavior on the radio part of the spectrum
Neutron star
Strong magnetic field+rapid rotation
Pulsar
Discovered the nuetron star in 1976
Jocelyn bell
50 times more massive than the sun
The degeneracy pressure of neutrons is overcome and star collapses
We don’t know how often it will form
Black holes
In hydrogen burning what is the last material it is going to create
Iron
A group of stars that form a pattern
Constellation
Brightest constellation
Crux( southern cross)
Greatest number of visible stars
Centaurus
Largest constellation
Hydra( water snake)
Smaller apparent stars
Asterism
Biology
The sun provides virtually all of the energy for life on earth
Health and safety
Exposure to the u. V Rays emitted by the sun increased the risk of skin cancer
Geology
The Suns radiant energy drives the earths weather patterns
Hertzprung-Russell diagram
Measures the luminosity and temperature of different stars
The temp. Of hr diagram
Kelvin
The great dark spot is found ?
Neptune
Great white spot?
Saturn
Great Red Spot
Jupiter
A region in the solar system beyond the orbit of Neptune containing asteroids comets and ice
Kuiper belt
Who invented the telescope
Hans lippershey
Asteroid that can kill us
Vestra
Dwarf planet
Ceres
Candidates of becoming planets
Vestra 2005 fy9 orcas Sedna 2003 el 61 Pallas hygiea 2002 AW 197 Varuna ixion
Uniqueness of Pluto
Orbit has the highest eccentricity distance from the sun varies more than other planets
Plane of orbit of Pluto is tilted
Charon is the largest satellite compared to its mother planet
Show characteristics of terrestrial planets
