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Questions and Answers
What is the main cause of instrument drift in gravimeters?
What is the main cause of instrument drift in gravimeters?
- Gravitational attraction of the sun and moon
- Variations in the Earth's magnetic field
- Changes in the response of the gravimeter over time (correct)
- Changes in the Earth's gravitational acceleration
What is the precision of modern gravimeters in measuring changes in the Earth's gravitational acceleration?
What is the precision of modern gravimeters in measuring changes in the Earth's gravitational acceleration?
- 1 part in 10 million
- 1 part in 1 million
- 1 part in 1000 million (correct)
- 1 part in 100 million
Which of the following is an example of a spatial based variation?
Which of the following is an example of a spatial based variation?
- Instrument drift
- Variations in the Earth's magnetic field
- Changes in the Earth's gravitational acceleration (correct)
- Tidal effects
What is the unit of measurement for gravitational acceleration?
What is the unit of measurement for gravitational acceleration?
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What is the main cause of tidal effects in gravimeters?
What is the main cause of tidal effects in gravimeters?
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What is the purpose of a gravimeter?
What is the purpose of a gravimeter?
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Which of the following manufacturers produces beam Instruments?
Which of the following manufacturers produces beam Instruments?
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What is the accuracy required for gravitational acceleration measurements?
What is the accuracy required for gravitational acceleration measurements?
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What is the main advantage of modern gravimeters?
What is the main advantage of modern gravimeters?
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