Suppose we use a baseball to represent Earth. On this scale, the other terrestrial worlds (Mercury, Venus, the Moon, and Mars) would range in size approximately from that of ________.
A) a golf ball to a baseball B) a dust speck to a basketball
C) a golf ball to a beach ball D) a dust speck to a golf ball
Question 2
A gas heated to millions of degrees would emit
A) mostly radio waves.
B) mostly X-rays.
C) no light, because it is too hot.
D) mostly ultraviolet light.
E) an equal amount of all wavelengths of light.
Tanner Scale
Earth, water, air
Hints of Earth’s Early Appearance
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
Obliquity "Tilt of Earth on its axis"
Earth 430 Million Years Ago