Podcast
Questions and Answers
What was the main technique used during the HMS Challenger Expedition to map the ocean floor?
What was the main technique used during the HMS Challenger Expedition to map the ocean floor?
- Sonar technology
- Satellite imaging
- Scuba diving
- Sounding (correct)
Who discovered the concept of nuclear decay in 1905?
Who discovered the concept of nuclear decay in 1905?
- Jean Bruhnes
- Jean-François Champollion
- Rutherford (correct)
- Lord Kelvin
What is the main concept behind determining the age of rocks using half life?
What is the main concept behind determining the age of rocks using half life?
- Radioactive decay (correct)
- Magnetic field reversals
- Temperature fluctuations
- Water erosion
What did Jean Bruhnes discover in volcanic rocks that helped understand magnetic field orientation?
What did Jean Bruhnes discover in volcanic rocks that helped understand magnetic field orientation?
How often do North and South magnetic poles switch based on the findings from Jean Bruhnes?
How often do North and South magnetic poles switch based on the findings from Jean Bruhnes?
What led to a revolution in understanding the interior structure of Earth?
What led to a revolution in understanding the interior structure of Earth?
In dating rocks, what does 'half life' represent?
In dating rocks, what does 'half life' represent?
What technique was used to discover the Mid Atlantic Ridge during the HMS Challenger Expedition?
What technique was used to discover the Mid Atlantic Ridge during the HMS Challenger Expedition?
What played a crucial role in allowing Earth to cool at different rates than Lord Kelvin's estimates?
What played a crucial role in allowing Earth to cool at different rates than Lord Kelvin's estimates?
What did seismology stations help locate with ease?
What did seismology stations help locate with ease?
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