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BYU Earth Science final exam study guide 2025
update|comprehensive questions and verified
answers (complete solutions) GRADE A+!!
Why is it important for us to understand how the natural systems around us
work? - (answers)so that we will not damage them and harm ourselves.
Why does the climate on Earth change as it rotates around the sun? -
(answers)Earth is tilted, and the part that receives the most sunlight changes as
Earth orbits the sun.
Which of the following is the best definition for biosphere? - (answers)the living
part of the earth
If you lived on a planet near the core of a galaxy, what would the night sky
probably look like? - (answers)It would have significantly more stars than what we
see at night from Earth.
Sand - (answers)Abiotic
Bacteria - (answers)Biotic
Mushroom - (answers)Biotic
Wind - (answers)Abiotic
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What shape is our solar system? - (answers)round and flat like a CD
How does light and heat energy travel from the sun to the earth? - (answers)in
the form of electromagnetic waves
What is not found in a galaxy? - (answers)Universes
Which of the following systems would include rivers, lakes, ice caps, and
groundwater? - (answers)hydrosphere
Which of the following must be part of a functional system? - (answers)Energy
What force holds the planets in orbit around the sun? - (answers)Gravity
Where is Earth located in the Milky Way galaxy? - (answers)Spiral arm
How is the lithosphere different from the mantle? - (answers)The mantle is very
hot, which causes the lithosphere to move. The lithosphere is the solid crust on
top of the earth.
As Earth moves farther from the sun in its orbit, how does the sun's gravitational
force on the earth change? - (answers)The force of gravity decreases.
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What is the difference between chemosynthesis and photosynthesis? -
(answers)In photosynthesis, sunlight is used to create food energy In
chemosynthesis, heat is used to create food energy.
Which planet has a climate that is similar to Earth's climate? - (answers)Mars
Which of the following is the best definition of lithosphere? - (answers)the crust
or top layer of rock—both ocean floor and continents
What is the most common element in the universe? - (answers)Hydrogen
What force holds stars and planets together in a galaxy? - (answers)the force of
gravity
Which of the following is the best definition of atmosphere? - (answers)the air
around the earth
Which are the four terrestrial (Earth-like) planets? - (answers)Mercury, Venus,
Earth, Mars
What do we call the natural development and change of ecosystems? -
(answers)succession
BYU Earth Science final exam study guide 2025
update|comprehensive questions and verified
answers (complete solutions) GRADE A+!!
Why is it important for us to understand how the natural systems around us
work? - (answers)so that we will not damage them and harm ourselves.
Why does the climate on Earth change as it rotates around the sun? -
(answers)Earth is tilted, and the part that receives the most sunlight changes as
Earth orbits the sun.
Which of the following is the best definition for biosphere? - (answers)the living
part of the earth
If you lived on a planet near the core of a galaxy, what would the night sky
probably look like? - (answers)It would have significantly more stars than what we
see at night from Earth.
Sand - (answers)Abiotic
Bacteria - (answers)Biotic
Mushroom - (answers)Biotic
Wind - (answers)Abiotic
,2|Page
What shape is our solar system? - (answers)round and flat like a CD
How does light and heat energy travel from the sun to the earth? - (answers)in
the form of electromagnetic waves
What is not found in a galaxy? - (answers)Universes
Which of the following systems would include rivers, lakes, ice caps, and
groundwater? - (answers)hydrosphere
Which of the following must be part of a functional system? - (answers)Energy
What force holds the planets in orbit around the sun? - (answers)Gravity
Where is Earth located in the Milky Way galaxy? - (answers)Spiral arm
How is the lithosphere different from the mantle? - (answers)The mantle is very
hot, which causes the lithosphere to move. The lithosphere is the solid crust on
top of the earth.
As Earth moves farther from the sun in its orbit, how does the sun's gravitational
force on the earth change? - (answers)The force of gravity decreases.
, 3|Page
What is the difference between chemosynthesis and photosynthesis? -
(answers)In photosynthesis, sunlight is used to create food energy In
chemosynthesis, heat is used to create food energy.
Which planet has a climate that is similar to Earth's climate? - (answers)Mars
Which of the following is the best definition of lithosphere? - (answers)the crust
or top layer of rock—both ocean floor and continents
What is the most common element in the universe? - (answers)Hydrogen
What force holds stars and planets together in a galaxy? - (answers)the force of
gravity
Which of the following is the best definition of atmosphere? - (answers)the air
around the earth
Which are the four terrestrial (Earth-like) planets? - (answers)Mercury, Venus,
Earth, Mars
What do we call the natural development and change of ecosystems? -
(answers)succession
