Radar Observations Are Used from Venus-Orbiting Spacecraft to Evaluate Mountain

question 9

Multiple Choice

Radar observations are used from Venus-orbiting spacecraft to evaluate mountain heights by measuring the time difference between echoes from mountain peaks and from the surrounding plains.In this technique,what would be the time difference for signals reflected from Maxwell Montes,which rises 12 km above the plain? (Think about the geometry and total path length.)

• A) 80 ns, or 8 × 10-⁸ s
• B) 800 ns, or 8 × 10-⁷ s
• C) 80 ms, or 8 × 10-² s
• D) 80 µs, or 8 × 10-⁵ s

Learn the benefits and drawbacks of using technology in family-teacher conferences.

Analyze the effectiveness of group conferences for families with language differences.

Identify strategies to improve communication between teachers and families.

Understand the importance of teacher-family relationships on student success.

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