Astronomy. Earth Science R. I. What is Astronomy?. Astronomy is the study of the Universe. A. Astronomical Measures. Long distances exist in space and are measured in Light Years.
Earth Science R
Astronomy is the study of the Universe.
The Andromeda Galaxy
What type of star is Polaris?
Two stars of the same color are plotted on an H-R diagram. Star A is more luminous than Star B. Correctly explain the reason for this difference.
Star A is larger than Star B
Name a star that is cooler and many times larger than Earth’s Sun.
Compared to other groups of stars, the group that has low luminosity and low temperatures are the
What does a shift in wavelength toward the red-light end of the visible spectrum tell us about the universe?
It is expanding
Name a star whose surface temperature is closest to the temperature of the boundary between Earth’s mantle and Core.
Which type of electromagnetic energy is more intense?
Planets’ characteristics are based on their distances from the Sun.
Terrestrial Planets are mostly rock where heat drove off ice & gases.
Jovian Planets are cooler and farther from the Suntherefore are mostly gas
Period of Revolution = 88 days
Period of Rotation = 59 days
Temps = -180 to 430ºC
Difficult for us to see it being so close to the sun.
The surface is “Frozen in time” like our Moon and Mars.
Period of Revolution = 224.7 days
Period of Rotation = 243 days
Temps = consistently >400ºC
The thickest atmosphere; mostly CO2 and the air pressure is 90x that of Earth: Greenhouse Effect
Surface of great mystery.
Day is longer than a year.
Period of Revolution = 365.26 days
Period of Rotation = ~24 hours
LIFE is supported in the Ecosphere region around the Sun (from Venus to Mars)
Oceans served as the breeding ground for life.
Oceans allow us to live comfortably in moderation
Period of Revolution = 687 days
Period of Rotation = ~25 hours
Temps reach 27 C
Polar Ice Caps
Period of Revolution = 11.86 yrs
Period of Rotation = 9 hr, 50 min
A spinning top
Great Red Spot
Period of Revolution = 29.46 yrs
Period of Rotation = 10 hr, 14 min
Rings of Ice
Period of Revolution = 84 yrs
Period of Rotation = 17 hr, 14 min
Rotating on it’s side in Retrograde Motion.
Period of Revolution = 164.8 yrs
Period of Rotation = 16 hours
Temps as low as -210 C
Outermost planet in our solar system.
Low energy from the sun leads to high winds.
xx. PLUTO & CO.
Pluto itself has 2 moons.
Period of Revolution = 247.7 yrs
Period of Rotation = 6 days, 9 hrs
Oblong orbit disqualifies it as a planet
There are now eight similar objects beyond Neptune
Correctly compare the size, density and composition of Neptune to Earth.
Neptune is larger, more gaseous and less dense
A major belt of asteroids is located between Mars and Jupiter. What is the average distance from the Sun to the Asteroids?
390 million km
An asteroid belt comprised of thousands of small rocks circles the sun between Mars and Jupiter.
The asteroid Hermes nearly hit Earth in 1936. It could happen…
Red Giant as seen from Hubble
Stars will undergo evolutionary changes over millions of years. Which sequence of events shows the predicted life of Earth’s Sun?
B. Apparent Star Motions
Constellations are patterns of stars in the sky. The zodiac of the month is eclipsed by the Sun.
Orion, A Winter Constellation
Once in a “Blue Moon”…?