Unit F list A Flashcards
Data
information gathered
phenomenon
an event related to how the world and universe work
model
any representation of a system,or its components ,to help one study and understand how it works
axis
the imaginary line around which the object spins,or rotates.earth rotates through an axis that runs straight through Earth from the north pole to the south
plausable
consistent with evidence
Rotate
to turn or spin around on an axis
rotation
to turn or spin around on an axis
Time Zone
a region throughout the same time is used
equator
an imaginary circle that divides the Earth into two halves called the northern hemisphere and the southern hemisphere
Hemisphere
One half of a sphere (the half of the earth to the north of the equator is the northern hemisphere;the half of the earth to the south of the equator is the southern hemisphere
orbit
Another word for revolution
revolution
a complete circle made by a planet around the sun or by a moon around a planet
revolve
to travel around another object in a circular or elliptical path
Crescent moon
The phase of the moon in which the lit portion of the moon is visible from the earths surface in less than a half circle
full moon
The phase of the moon that occurs about 14 days after a new moon in which the complete lighted portion of the moon is visible from the earths surface and appears as a full circle
first quarter moon
The phase of the moon, occurring 7 days after a new moon in which the lighted surface of the moon is visible from the earths surface is a half circle
gibbous moon
a phase of the moon before or after it is full when more than the half of its disk is illuminated
last quarter moon
The phase of the moon, occurring 7 days after a new moon in which the lighted surface of the moon is visible from the earths surface is a half circle
lunar cycle
The revolution of the moon around the earth that produces the changing phases of the moon. One complete cycle takes about 29.5 days
new moon
the phase of the moon occurring about 14 days after a full moon in which none of the lighted portion of the moon is not visible from the earths surface
waning
the phases of the moon when the illuminated portion of the moon is decreasing
waxing
the phases of the moon when the visible portion of the moon is increasing