Ch.21 Flashcards
(40 cards)
Time it takes for an object to go around the sun
Revolution
One AU is the average distance from _____ to ______
Sun - Earth
Do inner planets have shorter or longer revolution
shorter
What is AU used to measure
Distance of objects in space
Object spins while it revolves around the sun
Rotation
Do the inner or outer planets have a slow rotation
Inner Planets
Know how to do light minute math
Go to planet and then back to earth
Diameter of the sun
1.4 million km
Sun is mostly
Hydrogen Gas
types of light the sun gives off
Infared
UV
Visible Light
Do planets have a high or low eccentricity
low
What numbers are eccentricity between
0-1
How do you find eccentricity
foci divided by diameter
Why does mercury have a great temp range
little to no atmosphere
Venus’s spin
retrograde spin *west to east
Why is venus considered the hottest planets
Has Greenhouse Effect
What is the main part of Venus’s Atmosphere
Carbon dioxide
2 unique properties of Earth
water in all 3 phases, nitrogen rich
Mars is red because of____
iron in its soil
Mars surface features (3)
biggest volcanos “Olympic Mons”
Co2 Ice caps, surface is like a dried up river
What is the composition of Jupiters and Saturns Atmosphere
Hydrogen and Helium
What’s the red spot on Jupiter
Red atmospheric storm
2 main features of saturn
rings
could float on water
What gives Uranus a greenish glow
methane
