Lecture 18

Question 1

What are the four moons of Jupiter?

Answer 1

– Io
– Europa
– Ganymede
– Callisto

Question 2

Io Volcanic features

Answer 2

• Io is the most volcanically active body in the solar system
• Volcanic pit craters, calderas, shield volcanoes and so on
• there are umbrella shaped eruption Plumes

Question 3

Tidal heating in Io

Answer 3

• Caused by gravitational interaction btw Jupiter and Io
• Volcanic Activities: The heat generated from this frictional movement drives strong volcanic activities on Io’s surface

Question 4

Io compared to Europa

Answer 4

• Io is closer to Jupiter, larger and denser
  ↳ Composed of silicates and sulfur
• Europa is smaller, less dense and composed of silicates and water ice
• Io has a slightly higher temp (118k vs 103k)

Question 5

Europa features

Answer 5

• surface is characterized by fractured water ice with few craters

Question 6

Ganymede compared to Europa

Answer 6

• Ganymede is further from Jupiter & larger
• Composition is the same but it has a higher temperature

Question 7

Ganymede Features

Answer 7

• The surface of Ganymede is characterized by a
  dark, cratered terrain and a light, grooved terrain
  ↳ Dark cratered terrain is darkened by silicate
  ↳ Light grooved terrain is shallow but long

Question 8

Callisto compared to Ganymede

Answer 8

• Callisto is a lot further away from jupiter
• It is smaller with a similar denisty and same composition
• Temp is very similar

Question 9

Callisto Features

Answer 9

• The surface of Callisto is dominated by impact structures
• Impacts onto an icy surface

Question 10

What causes the differences in the Galilean Satellites

Answer 10

• The differences come with distance from jupiter
  ↳ Increase in surface ages
  ↳ Decreases in density