Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
56 Cards in this Set
- Front
- Back
Define the Big-bang Theory
|
Everything in the universe starts together, than explodes outward.
|
|
Define Galaxy - then tell wich galaxy we are in.
|
Clusters of stars ( our galaxy is the milky way )
|
|
Tell how old the universe is.
|
the universe is 15 billion years old.
|
|
What is a light year ?
|
The distance that light travels in one year 9.5 times 10 *15 times
|
|
What's an AU ( ASTRONOMICAL UNIT ) ? and how many kilometers is it ?
|
Distance from our sun , and it's 150 million kilometers ( earth to sun )
|
|
Tell the the creation and science for day 1
|
Creation : light & dark.
Science : Energy first |
|
Tell the creation & science for day 2
|
Creation : Seperating water
Science : First matter-(h20)gathers together |
|
Tell the creation and science for day 3
|
Creation : Land, plants
Science : Land forms, plants |
|
tell creation and science for day 4
|
creation : stars,moon
science : plants clean atmosphere ( so can see stars ) |
|
tell creation and science for day 5
|
creation : fish and birds
Science : Fish |
|
tell creation and science for day 6
|
creation : Reptiles, animals,insects,humans
Science : mammals |
|
Tell Creation and science for day 7
|
Creation : rested
Science : rested |
|
Tell how long lifecycle of stars takes
|
10 billion years
|
|
Tell in order the lifecycle of stars
|
1 : Nebula - cloud of gasses and dust
2 : Stars form 3 : Blue or white star 4 : Yellow star 5 : Red giant |
|
What kind of star is the sun , and how old is it ?
|
yellow star ,and is 4.6 - 5 billion years old
|
|
what's a constellation ?
|
a group of stars that form a pattern, not necessarily close
|
|
What happens after the red giant ?
|
If it has low mass it turns into a white dwarf then a
black dwarf |
|
what happens If a red giant has a high mass ?
|
then it turns into a neutron star
|
|
what happens if a red giant has a very high mass ?
|
it turns into a black hole
|
|
how do you classify stars ?
|
by it's luminosity ( brightness )
|
|
how do you classify stars ?
|
by it's luminosity ( brightness ) and it's color-tempature
|
|
teoll the scale of classifying stars
|
0 is the brightest and 6 is the dimest
|
|
in wich order do the colors of the sun go ?
|
white is hotter than yellow and yellow is hotter than red
|
|
How old is then sun ?
|
4.6 billion years old
|
|
what kind of star is our sun ?
|
yellow star
|
|
how far from earth is the sun ?
|
1.4 million kilometers
|
|
How many earth's can fit in the sun ?
|
1 million
|
|
What is the difference between inner and outer planets ?
|
if it's inside the asteroid belt it's an inner planet
|
|
How many earth's can fit in the sun ?
|
1 million
|
|
how long does light take to get to earth from the sun ?
|
8 minutes
|
|
tell the order of the planets
|
mercury
venus earth mars jupiter saturn uranus neptune pluto |
|
tell the energy types
|
heat
uv( ultra violet) gamma rays(radio activity) |
|
give examples of energy types
|
x rays
micro rays cosmic rays |
|
what is the sun made of ?
|
Hydrogen and helium
|
|
What is fusion ?
|
Hydrogen combined to form helium and give off energy
|
|
name the parts of the sun
|
corona
sun spots-cold areas due to magnetic disturbances that affect our weather solar flares- sudden releasees of energy that affect communications cause aurora borealis solar wind- plasma causes comet tails to point away from the sun |
|
what's an asteroid and it's orbit ?
|
an asteroid is rock, between mars and jupiter , the sun is in the center of it's orbit
|
|
what's a comet and it's orbit ?
|
it's ice, rock , gasses, and it's orbit is an oval around the sun being in the far south east
|
|
what's a meteorite ?
|
object that hit earth
|
|
what's a meteor ?
|
object headed for earth
|
|
what's a solar eclipse ?
|
when the moon passes in front of earth
|
|
what's a lunar eclipse ?
|
the moon moves into earth's darkest part of it's shadow
|
|
name the pats of a comet
|
coma- nucleus and halo
Tail- gas and dust |
|
what are comets 2 origins ?
|
the kuiper belt- short period(less than 200 year orbit)
The oort cloud- long period( more than 200 year orbit) |
|
what's the direction of comets?
|
always away from the sun
|
|
what's the composition of comets ?
|
ice and dust rock and gasses ( methane and amonite )
|
|
What are recent examples of famous comets ?
|
halley's comet
homaker-levy9 hale-bopp hiyukate |
|
what is the spectrum of comets ?
|
light color pattern given off by a glowing object- depends on chemichal compositon
|
|
what's an orbit ?
|
path of one object takes around another that depends on the gravity - pull of object due to mass and distance and inertia - object motion will continue in motion unless acted on by force.
|
|
what's a revolution ?
|
orbiting around another object
|
|
what's a rotation ?
|
spinning on your own axis
|
|
what's day vs. night ?
|
facing sun or not
|
|
what depends on the seasons ?
|
tilted toward the sun or not
|
|
what's precession ?
|
earth wobbles as it rotates
|
|
what are tides caused by ?
|
moon's gravity pulling on earth's ocean water
|
|
what are moon's phases ?
|
wanning is going away and waxing is
|