Special Earth
What causes Earth's tides?
The Moon's gravity
What does geology mean?
Earth speaks / study of Earth
What are Earth's three main layers?
Crust, mantle, core
What is a natural resource?
A raw material humans use from the environment
What is the thinnest major layer of Earth?
The crust
What is the main cause of Earth's seasons?
Earth's tilt
Who is often called the “Father of Geology”?
Charles Lyell
What waves allow scientists to study Earth's interior?
Seismic waves
What two categories classify resources according to whether they can be replenished?
Renewable and nonrenewable
What is the boundary between Earth's crust and mantle called?
The Moho
What protects Earth from harmful charged particles traveling through space?
Earth's magnetic field
What geological idea is summarized by “the present is the key to the past”?
Uniformitarianism
What two parts make up the lithosphere?
The crust and solid upper mantle
What's the difference between an actual and potential resource?
Actual is currently used; potential is identified but not currently used
Which part of Earth's core is liquid?
Outer core
Which planet's gravity helps protect Earth by influencing many asteroids?
Jupiter
About how old do young-earth creationists believe Earth is?
About 6,000–7,000 years
What is the softer region of the upper mantle beneath the lithosphere called?
Asthenosphere
What mainly determines the value of a natural resource?
Supply and demand/accessibility
Which layer makes up the greatest percentage of Earth's volume?
Mantle
Give three features of Earth that make it especially suited for life.
Answers include liquid water, atmosphere, magnetic field, suitable temperature/distance from Sun, Moon, appropriate mass/rotation, etc.
What is the difference between operational geology and historical geology?
Operational studies observable processes today; historical interprets Earth's past
How can scientists determine Earth's internal structure without traveling inside Earth?
By studying how seismic waves travel through it
What is sustainable yield?
Using a renewable resource at a rate that allows it to be replenished
Name the four main parts students should label on an Earth-interior cross section.
Crust, mantle, outer core, inner core