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| what causes the seasons to change? |
the amount of direct sunlight recieved from the sun |
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jnc Fri, 14 May 2010 01:00:47 GMT |
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| When does the moon appear reddish? |
lunar eclipse |
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jnc Fri, 14 May 2010 01:00:47 GMT |
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| lunar eclipse |
the moon is in the shadow of the earth. the moon appears reddish
Order: Sun, earth, moon |
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jnc Fri, 14 May 2010 00:59:54 GMT |
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| solar eclipse |
the moon comes between the sun and the earth. it blocks out the sun's light. we can only see the corona and we need special glasses to look at it
Order: Sun, moon, earth |
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jnc Fri, 14 May 2010 00:59:54 GMT |
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| How is the earth tilted during the summer and winter? |
summer: northern hemisphere is towards the sun
winter: southern hemisphere is towards the sun |
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jnc Fri, 14 May 2010 00:59:54 GMT |
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| what are the longest and shortest days of the year called? |
longest: sommer solstice
shortest: winter solstice |
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jnc Fri, 14 May 2010 00:59:54 GMT |
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| what does equinox mean? |
equal night |
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jnc Fri, 14 May 2010 00:55:21 GMT |
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| what is a single star system? is our sin a single star system? Why? |
our solar system is a single star system because it only has one star. we know this because the planets orbit around the sun, not multiple suns |
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jnc Fri, 14 May 2010 00:55:21 GMT |
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| what is the difference between a solar flare and a prominence? |
a prominence is a large solar flare |
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jnc Fri, 14 May 2010 00:55:21 GMT |
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| where do solar flares usually occur? |
over sunspots |
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jnc Fri, 14 May 2010 00:55:21 GMT |
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| what causes solar flares? |
scientists believe that solar winds cause solar flares |
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jnc Fri, 14 May 2010 00:51:41 GMT |
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| corona |
outermose layer, we see it during a solar eclipse |
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jnc Fri, 14 May 2010 00:51:41 GMT |
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| chromosphere |
gases radiate away from the photosphere |
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jnc Fri, 14 May 2010 00:51:41 GMT |
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| photosphere |
the source of visible light |
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jnc Fri, 14 May 2010 00:51:41 GMT |
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| core |
innermost layer of the sun where nuclear fusion takes place |
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jnc Fri, 14 May 2010 00:49:33 GMT |
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| list each layer of the sun in order fo=rom innermost to outermost |
core
photosphere
chromosphere
corona |
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jnc Fri, 14 May 2010 00:49:33 GMT |
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| what 2 gases are the stars made up of? |
hydrogen and helium |
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jnc Fri, 14 May 2010 00:49:33 GMT |
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| how is our sun predicted to die off? |
our sun is a less massive star and is expected to turn into a black dwarf |
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jnc Fri, 14 May 2010 00:49:33 GMT |
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| how much longer is our sun going to live? |
5 billion years |
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jnc Fri, 14 May 2010 00:45:57 GMT |
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| how old is our sun? |
about 5 billion years old |
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jnc Fri, 14 May 2010 00:45:57 GMT |
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| what size is our sun? |
medium sized star |
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jnc Fri, 14 May 2010 00:45:57 GMT |
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| what color are red giants and supergiants? |
red |
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jnc Fri, 14 May 2010 00:45:57 GMT |
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| what is a red giant or supergiant? |
a star at the end of its life, where the gas begins to expand around the star, causing the star to grow and turn red |
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jnc Fri, 14 May 2010 00:44:12 GMT |
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| black hole |
complete collapse of the star; nothing can escape, not even light |
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jnc Fri, 14 May 2010 00:44:12 GMT |
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| neutron star |
spinning very fast |
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jnc Fri, 14 May 2010 00:44:12 GMT |
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| supernova |
collapse of the core |
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jnc Fri, 14 May 2010 00:44:12 GMT |
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| black dwarf |
dead star |
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jnc Fri, 14 May 2010 00:41:17 GMT |
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| white dwarf |
using the energy it has left, not creating any more |
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jnc Fri, 14 May 2010 00:41:17 GMT |
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| planetary nebula |
star ejects all of the gas surrounding it |
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jnc Fri, 14 May 2010 00:41:17 GMT |
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| red giant/supergiant |
the star grows and turns red |
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jnc Fri, 14 May 2010 00:41:17 GMT |
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| main sequence |
growing stars |
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jnc Fri, 14 May 2010 00:35:58 GMT |
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| protostar |
sphere at the center of the flattened disk |
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jnc Fri, 14 May 2010 00:35:58 GMT |
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| nebula |
cloud of dust and gas |
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jnc Fri, 14 May 2010 00:35:58 GMT |
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| list each stage of the star in order |
nebula
protostar
main sequence
red giant/supergiant
planetary nebula
Less massive star: white dwarf
black dwarf
More massive star: supernova
neutron star
OR..............
Black Hole |
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jnc Fri, 14 May 2010 00:35:58 GMT |
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