60 terms

Chapter 1 test

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earths rotation takes about
24 hours
day and night are caused by
Earths rotation on its axis
One complete revolution of earth around the sun takes about
1 year
earth has seasons because
its axis is tilted as it moves around the sun
more direct rays and longer days when the north end of earths axis is tilted toward the sun, north american will experience
more direct rays and longer days
the moon must be directly between earth and the moon
for a solar eclipse to occurthe moon must be directly between earth and the moon
an increasing amount of the lighted side of the moon.
moon.from new moon phase to full moon phase, you seean increasing amount of the lighted side of the moon.
how much of the sunlit side of the moon faces earth
The phase of the moon you see depends on
full moon during what phase of the moon can a lunar eclipse occur
during what phase of the moon can a lunar eclips occur
when are tides highest
when the sun,earth,and the moon are nearly in line
tides are caused by
differences in how much the moon pulls on different partso f earth.
maria on the moons surface were formed by ancient
lava flows
Galileo saw that much of the moon's surface is covered with round pits called
craters
how large is the moon compared to earth
about one-fourth the diameter of earth
scientists think the moon was formed when
a large object struck earth and ejected material from the collision combined
in the southern hemisphere the summer solstice occurs when the sun is
farthest south
an equinox occurs when
neither end of earth axis is tilted toward or away from the sun
because the moon rotates once for each revolution around earth
you never see the far side of the moon form earth.
the amount of the lighted side of the moon you can see is the same during
first quarter and third quarter phase. the the te
you are less likely to see a total solar eclipse than a total lunar ecliplse because
the moons umbra only cover a small area on earths surface.
when do neap tides occur
when the suns pull is at right angle s to the moon
the tendency of a moving object to continue moving in a straight line or a stationary object to remain in place is called
inertia
all objects are attracted to each other by the force of
gravity
the strength of the force of gravity depends on
the masses of the objects and the distance between them
the different shapes of the moon seen form earth are called
phases
the two factors that combine to keep earth and the moon in their orbits are
gravity and inertia
the temperature of the moons surface varies greatly form day to night because the moon has
no atmosphere
a total solar eclipse is visible form
only within the moons umbra
during a total lunar eclipse the moon is in earths
umbra
where might water be found on the moon
near the poles
day and night are cause by earths revolution on its axis
false- rotation
the beginning of spring in the northern hemisphere is marked by the venal equinox
true
the phases of the moom depend on how much of the lighted side of the moon can be seen from earth
true
a solar eclips e occurs when the moon moves directly between the sun and earth
true
a tide with the greatest difference between low and high tides is called a neap tide
false- spring
maria are flat areas one flooded with lava on the moons surface
true
the moons average density is greater than the diesity of earths outer layers
false- the same
newtons law of universal gravitation states that every object in the universe attracts every other object
true
during a solar eclipse the earth blocks sunlight from reaching the moon
false- lunar
the moon formed after a planet-sized object collided with the sun
false- earth
the sun and moon seem to move across the sky each day because of earth __________ on its axis
rotation
seasons on earth are caused by the ______of earths axis as earth revolves around the sun
tilt
the times when day and night are equal length are called_______
equinox
the lighted half of the moon faces away from earth during the _______ phase of the moon
new moon
the moon can be see from earth because___________ reflects off the moons surface
sunlight
a lunar eclipse can only occur during the ________ phase of the moon
full moon
the darkest part of the moons shadow is called the _______
umbra
tides are cause by the force of ______ from the sun and moon acting on earth
gravity
a tide with the least distance between low and high tides is called a(n) ______ tide
neap
the round pits on the moon are called _____________
craters
Galileo called the dark flat parts of the moon __________ because they looked like seas
maria
according to the ________ theory the moon was formed when a planet-sized object collided with earth
collision ring
the moons average density is about the same as the density of earths ____ layers
outer
earth rotates on its axis about once every _______ hours
24
the force that pulls the moon toward earth is called __________.
gravity
the tendency for an object in motion to remain in motion is called _________
inertia
the moon rotates once on its axis in the same amount of time that it __________ once around earth
revolves
you can see the solar corona from earth during a (n) ____________ eclipse
solar
if you are in a car that stops suddenly your body keeps moving because it has___________
inertia
when a large object collided with earth debris from the collision was ejected into orbit and initially formed a (n) ________
ring