Orbiting Satellites (VCE SSCE Physics): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Who discovered that planetary orbits are elliptical rather than circular?
Who discovered that planetary orbits are elliptical rather than circular?
Johannes Kepler
What key insight did Newton make about orbital motion?
What key insight did Newton make about orbital motion?
Connecting Moon's orbit with apple falling
How does an orbiting satellite avoid hitting Earth's surface?
How does an orbiting satellite avoid hitting Earth's surface?
Falls toward Earth, moves sideways fast
What provides the centripetal force for a satellite orbiting a planet?
What provides the centripetal force for a satellite orbiting a planet?
Gravitational force
Does the orbital speed depend on the satellite's mass?
Does the orbital speed depend on the satellite's mass?
No, independent of satellite mass
What happens to a satellite's speed when its orbital radius increases?
What happens to a satellite's speed when its orbital radius increases?
Speed decreases
What are the requirements for a geostationary satellite?
What are the requirements for a geostationary satellite?
Above equator, 24-hour period, same dir.
What is the altitude of geostationary satellites above Earth's surface?
What is the altitude of geostationary satellites above Earth's surface?
36,000 km
When was the first artificial satellite launched and by which country?
When was the first artificial satellite launched and by which country?
4 October 1957, Soviet Union
Why do astronauts in orbit feel weightless?
Why do astronauts in orbit feel weightless?
No normal force acts on them