NJIT PHYSICS 203 EARTH IN SPACE
EXAM 2 PRACTICE SOLUTION PACK
2026 COMPLETE TESTED QUESTIONS
AND CORRECT ANSWERS GRADED
A+
◉ What is Meteorology? Answer: study of earth's atmosphere
◉ What is Biology? Answer: study of earth's biosphere
◉ What is astronomy? Answer: study of earth's surroundings, primarily
sun and moon
◉ What is geology? Answer: study of earth's geosphere
◉ what spheres form planet earth? Answer: geosphere, hydrosphere,
biosphere, atmosphere
◉ what is a system? Answer: collection of seemingly separate parts
that are actually interrelated to form a common whole
◉ Examples of systems Answer: 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? Answer: system that exchanges both matter
and energy with its surrounding
◉ what is a closed system? Answer: system that exchanges energy with
its surroundings but not matter
◉ what is an isolated system? Answer: 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? Answer:
closed
◉ In the strictest sense, what type of system is earth? Answer: open
◉ What is earths internal energy source? Answer: geothermal energy
◉ What is earths external energy source? Answer: the sun
◉ Which spheres does the sun feed/drive? Answer: hydrosphere and
the atmosphere
, ◉ Which sphere does the geothermal energy feed/drive? Answer:
geosphere
◉ which type of energy feeds the biosphere? Answer: 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? Answer: one that exchanges matter
without exchanging energy
◉ What happens once every 100 million years? Answer: rock falls from
space and causes catastrophe
◉ how often does rock falls from space and causes catastrophe?
Answer: once every 100 million years
◉ what is a sphere? Answer: geometrical shape with an equatorial
radius and a polar radius that are equal to each other
◉ example of meteorological processes? Answer: wind, rain, snow
◉ why is earth not considered a sphere? Answer: b/c it rotates
EXAM 2 PRACTICE SOLUTION PACK
2026 COMPLETE TESTED QUESTIONS
AND CORRECT ANSWERS GRADED
A+
◉ What is Meteorology? Answer: study of earth's atmosphere
◉ What is Biology? Answer: study of earth's biosphere
◉ What is astronomy? Answer: study of earth's surroundings, primarily
sun and moon
◉ What is geology? Answer: study of earth's geosphere
◉ what spheres form planet earth? Answer: geosphere, hydrosphere,
biosphere, atmosphere
◉ what is a system? Answer: collection of seemingly separate parts
that are actually interrelated to form a common whole
◉ Examples of systems Answer: 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? Answer: system that exchanges both matter
and energy with its surrounding
◉ what is a closed system? Answer: system that exchanges energy with
its surroundings but not matter
◉ what is an isolated system? Answer: 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? Answer:
closed
◉ In the strictest sense, what type of system is earth? Answer: open
◉ What is earths internal energy source? Answer: geothermal energy
◉ What is earths external energy source? Answer: the sun
◉ Which spheres does the sun feed/drive? Answer: hydrosphere and
the atmosphere
, ◉ Which sphere does the geothermal energy feed/drive? Answer:
geosphere
◉ which type of energy feeds the biosphere? Answer: 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? Answer: one that exchanges matter
without exchanging energy
◉ What happens once every 100 million years? Answer: rock falls from
space and causes catastrophe
◉ how often does rock falls from space and causes catastrophe?
Answer: once every 100 million years
◉ what is a sphere? Answer: geometrical shape with an equatorial
radius and a polar radius that are equal to each other
◉ example of meteorological processes? Answer: wind, rain, snow
◉ why is earth not considered a sphere? Answer: b/c it rotates
