Maps & Earths
What is latitude?
Lines that measure distance north/south of the equator.
What is a mineral?
Naturally occurring, inorganic solid with a crystal structure.
What was Pangaea?
A supercontinent where all land was once joined.
What is cohesion?
Water sticking to itself.
What is the Big Bang Theory?
The universe began from a rapid expansion.
What is longitude?
Lines that measure distance east/west of the Prime Meridian.
What property describes how light reflects off a mineral?
Luster
What happens at a divergent boundary?
Plates move apart.
Why does ice float?
It is less dense than liquid water.
What is a fossil?
Preserved remains of past life.
What does closely spaced contour lines indicate?
Steep slope
Name the three types of rocks.
Igneous, Sedimentary, Metamorphic
What force pulls plates apart?
Tension
What is turbidity?
Measure of water clarity.
What is half-life?
Time for half of a substance to decay.
What is the mantle?
Thick layer of hot rock beneath the crust.
What is weathering?
Breakdown of rocks into smaller pieces.
What is the focus of an earthquake?
Point underground where it starts.
What is groundwater?
Water stored underground.
Starting with 100 g, how much remains after 6 hours (half-life = 2 hours)?
12.5 g
What causes Earth’s magnetic field?
Movement of molten iron in the outer core
What is the rock cycle?
Continuous process where rocks change between types over time
What type of volcano has explosive eruptions?
Composite volcano
What is the difference between porosity and permeability?
Porosity = space in soil; Permeability = ability of water to flow through
What is natural selection?
Organisms with beneficial traits are more likely to survive and reproduce