BYU Earth Science final Exam Questions and answers 2025 .

BYU Earth Science final Exam Questions
and answers 2025




Why .is .it .important .for .us .to .understand .how .the .natural .systems .around .us
.work? .- .CORRECT .ANSWER-so .that .we .will .not .damage .them .and .harm
.ourselves.


Why .does .the .climate .on .Earth .change .as .it .rotates .around .the .sun? .-
.CORRECT .ANSWER-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? .- .CORRECT
.ANSWER-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? .- .CORRECT .ANSWER-It .would .have .significantly .more .stars
.than .what .we .see .at .night .from .Earth.


Sand .- .CORRECT .ANSWER-Abiotic

Bacteria .- .CORRECT .ANSWER-Biotic

Mushroom .- .CORRECT .ANSWER-Biotic

Wind .- .CORRECT .ANSWER-Abiotic

What .shape .is .our .solar .system? .- .CORRECT .ANSWER-round .and .flat .like .a .CD

How .does .light .and .heat .energy .travel .from .the .sun .to .the .earth? .- .CORRECT
.ANSWER-in .the .form .of .electromagnetic .waves


What .is .not .found .in .a .galaxy? .- .CORRECT .ANSWER-Universes

Which .of .the .following .systems .would .include .rivers, .lakes, .ice .caps, .and
.groundwater? .- .CORRECT .ANSWER-hydrosphere


Which .of .the .following .must .be .part .of .a .functional .system? .- .CORRECT
.ANSWER-Energy

, What .force .holds .the .planets .in .orbit .around .the .sun? .- .CORRECT .ANSWER-
Gravity

Where .is .Earth .located .in .the .Milky .Way .galaxy? .- .CORRECT .ANSWER-Spiral
.arm


How .is .the .lithosphere .different .from .the .mantle? .- .CORRECT .ANSWER-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? .- .CORRECT .ANSWER-The .force .of
.gravity .decreases.


What .is .the .difference .between .chemosynthesis .and .photosynthesis? .-
.CORRECT .ANSWER-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? .- .CORRECT
.ANSWER-Mars


Which .of .the .following .is .the .best .definition .of .lithosphere? .- .CORRECT
.ANSWER-the .crust .or .top .layer .of .rock—both .ocean .floor .and .continents


What .is .the .most .common .element .in .the .universe? .- .CORRECT .ANSWER-
Hydrogen

What .force .holds .stars .and .planets .together .in .a .galaxy? .- .CORRECT .ANSWER-
the .force .of .gravity

Which .of .the .following .is .the .best .definition .of .atmosphere? .- .CORRECT
.ANSWER-the .air .around .the .earth


Which .are .the .four .terrestrial .(Earth-like) .planets? .- .CORRECT .ANSWER-
Mercury, .Venus, .Earth, .Mars

What .do .we .call .the .natural .development .and .change .of .ecosystems? .-
.CORRECT .ANSWER-succession


Communication .in .space .requires .a .signal .to .be .sent .by .waves .with .very .large
.wavelengths. .What .is .the .best .type .of .wave .to .use .for .a .communication .device
.in .space? .- .CORRECT .ANSWER-radio .waves


What .property .makes .one .type .of .electromagnetic .wave .different .from .another?
.- .CORRECT .ANSWER-The .wavelength .of .each .type .of .radiation .is .different.


Four .students .were .asked .to .list .one .property .of .a .star .that .can .be .measured
.by .analyzing .its .spectrum. .The .answers .are .listed .below. .Which .student