phases
where is the moon located when its a new moon
directly between the sun and earth.
What causes a spring tide.
Spring tides occur when the sun and moon are aligned
what causes an eclipse
An eclipse happens when one astronomical body blocks light from or to another.
which way does the earth rotate.
eastward
why do seasons change.
because our planet's axis of rotation is tilted at an angle of 23.5 degrees relative to our orbital plane
where is the moon located when the moon is full
directly on the outside of the earth away from the sun
what causes a neap tide.
Neap tides occur when the sun and moon are acting on the earth in opposing direction.
what causes a lunar eclipse.
the Moon moves into the shadow of Earth cast by the Sun.
how many days does it take for the earth to revolve around the sun
365.25
what effects earth's tides
moon's gravity
where is the moon located when the moon is first quarter.
right below the earth.
why do tides happen?
Tides happen because of the gravitational pull of the Moon and Sun on ocean water.
what causes a solar eclipse.
the Moon passes between Earth and the Sun and stops some or all of the Sun's light from reaching Earth.
how long does it take for the moon to orbit earth
29.5 days
why does the moon light up at night
because its reflecting the sun's light
where is the moon located when the moon is at third quarter.
directly above the earth
what tide comes first spring or neap
spring (neap tides usually come 7 days after)
During what phase can a lunar eclipse occur
full moon
how long does it take the moon to rotate on its axis
27 days
how many layers does earth have
4
where is the moon located when the moon is waning gibbous.
just after the full moon before third quarter
which moon phases create neap tides
first and third quarter moons
is it dangerous to look at a solar eclipse?
Yes. It can cause "eclipse" blindness!
do we always see the same side of the moon
Only one side of the Moon is visible from Earth because the Moon rotates on its axis at the same rate that the Moon orbits the Earth
how do we account for the extra 1/4 day we experience each year
Every 4 years we add a day to the calendar (February 29)