Below are some of the questions that I could not figure out that might be on my midterm. Please answer all questions accurately. Please do not display a false answer if you are unsure. Thankyou(:

1. Alternating parallel bands of normal and reversed magnetic polarity are found in the basaltic bedrock on either side of the
Mid-Atlantic Ridge
Yellowstone Hot Spot
San Andreas Fault
Peru-Chile Trench

2. An earthquake's P-wave arrived at a seismograph station at 02 hours 40 minutes 00 seconds. The earthquake's S-wave arrived at the same station 2 minutes later. What is the approximate distance from the seismograph station to the epicenter of the earthquake?
1,100 km
2,400 km
3,100 km
4,000 km

3. A seismic station 4000 kilometers from the epicenter of an earthquake records the arrival time of the first P-wave at 10:00:00. At what time did the first S-wave arrive at this station?
9:55:00
10:05:40
10:07:05
10:12:40

4. Compared to the continental crust, the oceanic crust is
less dense and less felsic
less dense and less mafic
more dense and more felsic
more dense and more mafic