What is the observed feature that suggests that Mercury's iron core is molten?
A) presence of a global magnetic field
B) background sloshing sound in radio transmissions sent back by the Mariner 10 spacecraft
C) irregularities in Mercury's rotation rate
D) extensive lava flows near the regions of greatest tidal stress, such as the Caloris Basin
Correct Answer:
Verified
Q21: The huge impact of an object that
Q23: What caused the long, meandering scarps (cliffs)
Q30: The Caloris Basin, a huge circular region
Q33: The Caloris Basin is an immense impact
Q59: Compared with that of Earth, Mercury's magnetic
Q368: When were most of the existing lava
Q369: How do we know that the Caloris
Q371: Two conditions that appear to be necessary
Q373: What is the Caloris Basin?
A) a lunar
Q375: When the solar wind (mostly protons and
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