Geophysics is a subject of natural science concerned with the physical processes and physical properties of the Earth and its surrounding space environment, and the use of quantitative methods for their analysis. The term "geophysics" sometimes refers only to the geological applications: Earth's shape; its gravitational and magnetic fields; its internal structure and composition; its dynamics and their surface expression in plate tectonics, the generation of magmas, volcanism and rock formation. However, modern geophysics organizations use a broader definition that includes the water cycle including snow and ice; fluid dynamics of the oceans and the atmosphere; electricity and magnetism in the ionosphere and magnetosphere and solar-terrestrial relations; and analogous problems associated with the Moon and other planets. 

Although geophysics was only recognized as a separate discipline in the 19th century, its origins date back to ancient times. The first magnetic compasses were made from lodestones, while more modern magnetic compasses played an important role in the history of navigation. The first seismic instrument was built in 132 AD. Isaac Newton applied his theory of mechanics to the tides and the precession of the equinox; and instruments were developed to measure the Earth's shape, density and gravity field, as well as the components of the water cycle. In the 20th century, geophysical methods were developed for remote exploration of the solid Earth and the ocean, and geophysics played an essential role in the development of the theory of plate tectonics. QUESTIONS:

Q1:
1. What is the primary subject of the article?
2. What does the article mainly discuss?
3. 
Q2:
1. When was geophysics recognized as a separate discipline in the sciences?
2. During what time period did geophysics receive recognition as its own scientific discipline?
3. 
Q3:
1. When did geophysics first get examined, without its current name?
2. When did the first studies of geophysics occcur, albeit not under that name?
3. 
Q4:
1. Is the water cycle considered to be an aspect of modern day geophysics?
2. In the modern day study of geophysics, is the water cycle a part of the discipline?
3. 
Q5:
1. Did earlier forms of geophysics study the water cycles?
2. Were the water cycles something studied in previous iterations of geophysics?
3. 
Q6:
1. What was an important aspect of early kinds of compasses?
2. What did the first compasses have included on them that was important?
3. 
Q7:
1. Are the oceans considered to be an aspect of modern day geophysics?
2. In the modern day study of geophysics, are the oceans a part of the discipline?
3. 
Q8:
1. Are volcanoes considered to be an aspect of modern day geophysics?
2. In the modern day study of geophysics, are volcanoes a part of the discipline?
3. 
Q9:
1. What was the name of one of the scientists that helped with the development of plate tectonic theory?
2. Who was one scientist that was instrumental to figuring out the theory of plate tectonics?
3. 
Q10:
1. Are magnetic fields considered to be an aspect of modern day geophysics?
2. In the modern day study of geophysics, are magnetic fields a part of the discipline?
3. 
