Unit 6
What are Seismic Waves?
Vibrations that travel through earth and are caused by events like earthquakes or human made blasts
Where do you expect to find earthquakes?
Boundaries of tectonic plates
What is Speed?
it describes how quickly something moves
What is a Force?
a push or pull, or any action that is able to change motion.
What is Input?
includes everything you do to make the machine accomplish a task, like pushing on the bicycle pedals.
What is a seismologist?
A scientist who studies earthquakes
What is the Ring of Fire?
Rims the Pacific Ocean along subduction zones
Equation for Speed=distance ➗ time
v= d
t
What is Newtons 1st Law
“An object at rest will stay at rest and an object in motion will continue in motion at constant velocity UNLESS there is a net force.”
What is Output?
what the machine does for you, like going fast or climbing a steep hill.
What is a Mid-Ocean Ridge?
A long chain of undersea mountains
What is Magma
Melted Rock
What is Instantaneous Speed
actual speed that an object has at any moment
What is Inertia?
the property of an object that resists changes in motion.
What is a "Simple Machine"?
an unpowered mechanical device that accomplishes a task in one movement.
What does the Richter scale record?
the magnitude in an earthquake
what is an Active volcano
Erupted recently & is expected to erupt again in the near future
Speed with direction
When does Newtons 3rd Law Happen
applies when a force is placed on any object, such as a basketball.
What is a Gear?
a rotating wheel with teeth that receives or transfers motion and forces to other gears or objects.
What is a Magma Chamber?
a large pool of liquid rock beneath the surface of the Earth.
What is a Shield Volcano
Looks wide, flat mounds, magma too runny to build a tall cone
What is Acceleration
the rate at which your speed (or velocity) changes
What is Momentum?
the mass of a object times its velocity.
What is a Lever?
a stiff structure that rotates around a fixed point called the fulcrum.