Unit F list A Flashcards
Data
Information gathered
Phenomenon
An event related to how the world and universe works
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 straight through Earth from the North pole to the South pole.
Plausible
Consist with evidence
Rotate, rotation
To turn or spin around an axis
Time zone
A region throughout which the same standard time 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 another 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 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 of the moon is visible from Earth’s surface and appears as a full circle.
First quarter moon
The phase of the moon, occurring about seven days after the new moon, in which the lightened portion of the moon that is visible from the Earth’s surface is a half circle.
Gibbous moon
A phase of the moon before of after it is full, when more 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 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.
waning
The phases of the moon when the illuminated portion is visible to Earth is decreasing.
Waxing
The phases of the moon when the illuminated portion is visible to Earth is increasing.