PHYS203 NJIT - Exam 1-Questions 2025/2026 with
100% Correct Solutions
What is Oceanography?
Study of earth's hydrosphere
What is Meteorology?
study of earth's atmosphere
What is Biology?
study of earth's biosphere
What is astronomy?
study of earth's surroundings, primarily sun and moon
What is geology?
study of earth's geosphere
what spheres form planet earth?
geosphere, hydrosphere, biosphere, atmosphere
what is a system?
collection of seemingly separate parts that are actually interrelated to form a common whole
Examples of systems
,Nervous system = spinal cord, brain and nerves
cardiovascular system = heart, arteries, veins, and capillaries
solar system = sun, planets and moons
what is an open system?
system that exchanges both matter and energy with its surrounding
what is a closed system?
system that exchanges energy with its surroundings but not matter
what is an isolated system?
system that does not exchange matter and does not exchange energy with its surroundings
For all intents and purposes, what type of system is earth?
closed
In the strictest sense, what type of system is earth?
open
What is earths internal energy source?
geothermal energy
What is earths external energy source?
the sun
Which spheres does the sun feed/drive?
hydrosphere and the atmosphere
, Which sphere does the geothermal energy feed/drive?
geosphere
which type of energy feeds the biosphere?
mostly fed by or driven by the Sun, but remarkably a small part of the biosphere is driven by the
geothermal energy
Which system is impossible?
one that exchanges matter without exchanging energy
What happens once every 100 million years?
rock falls from space and causes catastrophe
how often does rock falls from space and causes catastrophe?
once every 100 million years
what is a sphere?
geometrical shape with an equatorial radius and a polar radius that are equal to each other
example of meteorological processes?
wind, rain, snow
why is earth not considered a sphere?
b/c it rotates
what is an oblate spheroid
100% Correct Solutions
What is Oceanography?
Study of earth's hydrosphere
What is Meteorology?
study of earth's atmosphere
What is Biology?
study of earth's biosphere
What is astronomy?
study of earth's surroundings, primarily sun and moon
What is geology?
study of earth's geosphere
what spheres form planet earth?
geosphere, hydrosphere, biosphere, atmosphere
what is a system?
collection of seemingly separate parts that are actually interrelated to form a common whole
Examples of systems
,Nervous system = spinal cord, brain and nerves
cardiovascular system = heart, arteries, veins, and capillaries
solar system = sun, planets and moons
what is an open system?
system that exchanges both matter and energy with its surrounding
what is a closed system?
system that exchanges energy with its surroundings but not matter
what is an isolated system?
system that does not exchange matter and does not exchange energy with its surroundings
For all intents and purposes, what type of system is earth?
closed
In the strictest sense, what type of system is earth?
open
What is earths internal energy source?
geothermal energy
What is earths external energy source?
the sun
Which spheres does the sun feed/drive?
hydrosphere and the atmosphere
, Which sphere does the geothermal energy feed/drive?
geosphere
which type of energy feeds the biosphere?
mostly fed by or driven by the Sun, but remarkably a small part of the biosphere is driven by the
geothermal energy
Which system is impossible?
one that exchanges matter without exchanging energy
What happens once every 100 million years?
rock falls from space and causes catastrophe
how often does rock falls from space and causes catastrophe?
once every 100 million years
what is a sphere?
geometrical shape with an equatorial radius and a polar radius that are equal to each other
example of meteorological processes?
wind, rain, snow
why is earth not considered a sphere?
b/c it rotates
what is an oblate spheroid
