Venus

Question 1

Overview / Facts of Venus

Answer 1

• no moons
• metal core
• orbit period: 225 days
• surface temp: 462 degrees C
• Earth Twin - similar size

Question 2

Venus Atmosphere

Answer 2

• atmosphere:
  96.5% CO2
  3.5% N + trace gases

Question 3

Venus Surface Conditions

Answer 3

• air pressure: 90x Earth
• temp: 462 degrees C
• winds: up to 220 mph

Question 4

Venus vs Earth

Answer 4

• gravity 0.9 of Earth
• chondritic composition mantle
• comparable core size
• geochemical twins

Question 5

Venus has NO geodynamo

Answer 5

• lacks cooling effect of subduction of cold lithosphere into mantle (lacks plate tectonics)
• rotates too slowly –> cannot spin core enough to create magnetic field