Northern lights and southern lights are other names for
granulations
prominences
eclipses
auroras
Our solar system is...
all of these
in the Milky Way galaxy.
our sun and planets.
includes our moons and the moons of our other planets.
When the outward force due to fusion balances the inward force of gravity...
nova
stasis
parallax
equilibrium
How do stellar spectra provide evidence that stars are actually moving?
light separates into different wavelengths
long exposure photos show curved trails
dark line spectra reveal a star's composition
Doppler shifts occur in the star's spectrum
A shadow is shortest
when there is a full moon.
at dinner time because the sun is setting.
in May.
at noon because the sun is directly overhead.
The observed change in the frequency of a wave when either the source or observer is moving...
apparent magnitude
absorption spectra
parallax
Doppler effect
A nebula begins the process of becoming a protostar when the nebula...
explodes as a nova
develops a red shift
begins to shrink, increase its spin and temperature
changes color from red to blue
The number of hydrogen atoms that fuse to form a helium atom is...
eight
four
six
two
At night we can see over _____________ stars.
2
2,000, 000
20
2,000
A constellation .....
is a group of stars that form a pattern.
is seen every night all year long.
is a group of planets.
revolves around the un.
We do not see other stars during the day because...
they set in the west.
our star the sun is too bright.
they set in the east.
they are too far away.
Sunspots are regions of...
intense magnetism
the core
lighter color
high temperature
Which of the following choices lists the colors of stars from hottest to coolest...
orange, red, white, blue, yellow
yellow, orange, red, blue, white
blue, white, yellow, orange, red
red, yellow, orange, white, blue
Which layer of the sun has the densest material?
the core
the radiative zone
the convection zone
the corona
What happens to main sequence stars (the sun) when energy from fusion is no longer available?
they switch to fission reactions
they collapse and become white dwarfs
they expand and become supergiants
they contract and turn into neutron stars
Which constellation do we see in the winter months?
Orion
The Lobster
Milky Way
Jupiter
Shadows change length during the day because....
because people move.
because the moon gets in front of the sun.
the sun is moving
of the earth's position in front of the sun.
Which is the closest star to earth?
the sun
Orion
Pluto
Polaris
A star is a ....
giant ball of hot gas.
always has 5 points.
is a planet.
has a yellow color.
What accounts for different stars being seen in the sky during different seasons of the year?
position north or south of the equator
Earth's revolution around the sun
Earth's rotation on its axis
stellar motion around Polaris
Stars appear to move in circular paths through the sky because...
the stars orbit Polaris
Earth rotates on its axis
Earth orbits the sun
the Milky Way is a spiral galaxy
A shooting star is...
a meteor entering earth's atmosphere
a star shooting across the sky
a fairy tale
a sun blowing up
Constellations appear to move across the sky because....
the sun is moving.
the earth is moving.
all of these.
the constellations are moving.