This theory states that continents were once joined together.
What is Continental Drift?
This type of seismic wave cannot travel through liquids.
What is an S-wave?
This factor primarily controls Earth’s climate zones.
What is latitude?
This type of solar radiation heats Earth’s surface the most.
What is UV rays?
These are the two most abundant elements in the universe.
What are hydrogen and helium?
This feature forms where oceanic plates move apart.
What is a mid-ocean ridge?
A fossil that lived for a short time but was widespread is called this.
What is an index fossil?
Daytime winds that blow from sea to land are called this.
What is a sea breeze?
This heat transfer process causes hot magma to rise and cool magma to sink.
What is convection?
This force keeps planets in orbit around the Sun.
What is gravity?
Matching fossils found on different continents support this idea.
What is that continents were once connected in a supercontinent known as Pangea?
This principle states that older rock layers are usually found below younger layers.
What is the Law of Superposition?
These two air masses often collide to form tornadoes in the central U.S.
What are warm, moist maritime tropical air and cold, dry continental polar air?
The ability of clouds to reflect sunlight is known as this.
What is albedo?
A galaxy moving away from Earth shows this change in its spectral lines.
What is redshift?
Alternating magnetic stripes on the seafloor provide evidence for this process.
What is seafloor spreading?
This method uses radioactive decay to determine the actual age of rocks.
What is radiometric dating?
This type of front brings sudden temperature drops and strong storms.
What is a cold front?
Energy transfer by direct contact is called this.
What is conduction?
This observation provides strong evidence for the Big Bang Theory.
What is cosmic background radiation?
The three types of tectonic plates and a feature they form.
What is transform (earthquake), convergent (mountain/volcano), divergent (sea floor spreading, volcano, trench)?
A rock sample contains 25% of its original radioactive material. If the half-life is 1,000 years, how old is the rock?
What is 2,000 years?
Global winds are caused by unequal heating and this Earth motion.
What is Earth’s rotation?
This type of energy transfer does NOT require a medium.
What is radiation?
The Sun will enter this stage next in its life cycle.
What is a red giant?