unit F - list A Flashcards
data
Information gathered from an experiment;firsthand evidence from the 5 senses or from machines that extend our senses.
phenomenon
An event related to how the world and universe work.
model
Any representation of a system, or it’s components, to help one study and understand how it works.
axis
The imaginary line around witch an object spins,or rotates. The Earth rotates around an axis that runs straight trough Earth from the North Pole to the South Pole.
plausible
Consistent with evidence.
rotate/rotation
To turn or spin around an axis.
time zone
A region throughout witch the same standard time is used. (there are 24 time zones in the world at approximately by meridians at 15* intervals, an hour apart.)
equator
An imaginary circle that divides Earth into two halves called the Northern Hemisphere and Southern Hemisphere.
hemisphere
One half of a sphere. ( The half of Earth that is north of the equator is the Northern Hemisphere; the half of the Earth is South of the equator is the South Hemisphere)
orbit
Another term for revolution.
full moon
the phase of the moon that occurs about 14 days after the new Moon in which the complete lighted portion of the Moon is visible from Earth’s surface and appears as a full circle
revolve
to travel another object in a circular path.
revolution
a complete circle made by a planet around the sun or by a moon around a planet.
waning
the phases of the moon when the illuminated portion visible from earth is decreasing.
waxing
the phases of the moon when the illuminated portion visible from Earth is increasing.
crescent moon
the phase of the Moon in which the lit portion of the Moon visible from Earth’s surface is less than half-circle (crescent shape).
first-quarter Moon
the phase of the Moon, occurring about seven days after the new Moon, in which the lighted portion of the Moon that is visible from Earth’s surface is a half-circle.
gibbous Moon
a phase of the Moon before or after it is full, when more than half of its disk is illuminated
last-quarter Moon
the phase of the Moon that occurs 7 days after the full Moon in which the lighted portion of the Moon that is visible from the Earth’s surface is a half-circle
lunar cycle
the revolution of the Moon around Earth that produces the changing phases of the Moon. One complete lunar cycle takes about 29.5 days.
new Moon
the phase of the Moon, occurring about 14 days after the full Moon, in which none of the lighted portion of the Moon is visible fro the Earth’s surface
