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 its components, to help one study understand how it works
axis
the imaginary line around which an object spins, or rotates; Earth rotates around an axis the runs straight through Earth from the North Pole to the South Pole
crescent Moon
the phase of the Moon in which the lit portion of the Moon is visible from Earth’s surface is less than a half-circle(crescent shape); crescent moons occur right after and right before a new moon
equator
an imaginary circle that divides the Earth into two halves called the Northern hemisphere and Southern Hemisphere
first-quarter Moon
the phase of the Moon, occurring about 7 days after the new Moon, in which the lighted portion of the moon that is visible from Earth’s surface is half-circle
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 & appears as a full circle
gibbous Moon
a phase of the Moon before or after it is full, when mare than half of its disk is illuminated
last-quarter Moon
the phase of the Moon that occurs about 7 days after the full Moon in which the lighted portion of the Moon that is visible from 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 from Earth’s surface
plausible
consistent with evidence
revolution
a complete circle made by a planet around a sun or by a moon around a planet(orbit)
orbit/revolve
to travel around another object in a circular or elliptical path