Unit F List A Flashcards
Data
IInformation 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 an object spins, or rotates. Earth rotates around an axis that runs strait through 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 which the same standard time is used.
Equator
An imaginary circle that divides Earth into two halves called the Northern Hemisphere and Southern Hemisphere.
Hemisphere
One half of a sphere.
Orbit
Another term for revolution
Revolution
A complete circle made by a planet around a sun or by a moon around a planet.
Revolve
To travel around an object in a circular or elliptical path.
crescent Moon
The phase of the Moon in which the lit portion of the Moon visible from Earth’s surface is less than a half-circle. Crescent moons occur right after or right before the new moon.
Full Moon
The phase of the moon that occurs about 14 days after the new moon in which the complete lighted portion is visible from Earth’s surface & appears as a full circle.
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.
Lunar cycle
The revolution of the moon around Earth that produces the changing phases of the moon. One complete lunar cycle takes 29.5 days.
Gibbous moon
A phase of the moon before of after it is full, when more than half of it’s 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.
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.
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.