1
Marks: 1
A full moon is visible (select best answer - not any answer that works)
Choose one answer.
a
.
at noon.
b
.
from midnight to noon.
c
.
at sunrise.
d
.
at sunset.
e
.
from sunset until sunrise.
Question
2
Marks: 1
A lunar eclipse can occur
Choose one answer.
a
.
when the moon is either new or full.
b
.
only when the moon is closest to the earth.
c
.
only when the moon is full.
d
.
only when the sun, earth, and moon are aligned.
e
.
c and d
Question
3
Marks: 1
A solar eclipse that occurs when only part of the sun is obscured by the moon is called
Choose one answer.
a
.
an annular solar eclipse.
b
.
a total solar eclipse.
c
.
a partial solar eclipse.
d
.
a penumbral solar eclipse.
e
.
an umbral solar eclipse.
Question
4
Marks: 1
A third quarter moon will be directly overhead
Choose one answer.
a
.
at noon.
b
.
at midnight.
c
.
at sunrise.
d
.
at sunset.
e
.
From sunset until sunrise.
Question
5
Marks: 1
During our Summer Solstice (in Northern Hemisphere), the sun is directly overhead
Choose one answer.
a
.
0
b
.
15.3
c
.
23.5
d
.
90
e
.
180
f
.
at the Tropic of Capricorn.
g
.
at the Tropic of Cancer.
h
.
at the equator.
i
.
in Las Vegas, Nevada.
j
.
nowhere on earth.
Question
6
Marks: 1
Eclipse seasons repeat approximately every
Choose one answer.
a
.
month.
b
.
3 months.
c
.
6 months.
d
.
year.
e
.
18.5 months.
Question
7
Marks: 1
One complete cycle of axial precession occurs every
Choose one answer.
a
.
the magnetic field of Earth.
b
.
the impact of asteroids.
c
.
the formation and subsequent melting of glaciers during the ice-ages.
d
.
the force of gravity from the sun on the Earth-moon system.
e
.
the force of gravity from the sun and moon on Earths equatorial bulge.
f
.
4.6 billion years.
g
.
26,000 years.
h
.
365 days.
i
.
Light year.
Question
8
Marks: 1
Polaris has always been the star nearest the north celestial pole, true or false?
Choose one answer.
a
.
true
b
.
false
Question
9
Marks: 1
The earth doesnt experience a solar eclipse every month because
Choose one answer.
a
.
of unpredictable weather patterns.
b
.
the moon always keeps its same side toward the earth.
c
.
the moons position is sometimes above or below the ecliptic plane.
d
.
its sometimes nighttime when the eclipse occurs.
e
.
sometimes the moon is too far away.
Question
10
Marks: 1
The earth is closest to the Sun during our (the northern hemispheres) summer, true or false?
Choose one answer.
a
.
true
b
.
false
Question
11
Marks: 1
The earth revolves around an external axis (the sun) once every
Choose one answer.
a
.
365 days
b
.
Month (28 days)
c
.
12 hours
d
.
24 hours
e
.
7 days
Question
12
Marks: 1
The earth rotates about its internal axis once every
Choose one answer.
a
.
365 days
b
.
month (28 days)
c
.
12 hours
d
.
24 hours
e
.
7 days
Question
13
Marks: 1
The ecliptic is
Choose one answer.
a
.
the centerline of the zodiac.
b
.
the flat plane projected from earths orbit out into space.
c
.
the apparent path of the sun across the sky.
d
.
all of the above
e
.
none of the above
Question
14
Marks: 1
The moon and visible planets are always within a few degrees of the ecliptic, true or false?
Choose one answer.
a
.
true
b
.
false
Question
15
Marks: 1
The moon is directly opposite the sun during a
Choose one answer.
a
.
first quarter moon.
b
.
waxing gibbous moon.
c
.
waning gibbous moon.
d
.
new moon.
e
.
full moon.
