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A
B C
D E
F G
H I
J K
L M
N O
P Q
R S
T U
V W
X Y
Z
V
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Variable Star:
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A stars whose glow (brightness) changes
with time.
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Velocity:
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The speed of a thing or an object moving
in a specific direction. A car traveling at
35 miles per hour is a dimension of speed.
Observing that a car is itinerant 35 miles
per hour due north is a measurement of velocity.
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Venus:
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An inner, terrestrial (rocky) planet, which
is slightly smaller than Earth. Located between
the orbits of Mercury and the Earth, Venus
has an extremely thick atmosphere that is
enclosed by a layer of clouds that produce
a “greenhouse effect” on the planet.
Venus’s surface hotness is roughly 480°
C (900° F), creation it the hottest planet
in the solar system.
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