Studied by 10 peopleSupernova
Explosion of a big star
P-waves (5 km/s)
What is the fastes type of seismic wave
reduces the friction
How does a wheel and axle make work easier
Radio waves
Example of electromagnetic energy
Energy cannot be destroyed or created
What does the law of the conservation of energy state
F=Ma
What is the equation for force
Velocity is speed with direction
What is velocity and how is it different from speed
An object that isnt moving
What is a refrence point
Distance and time
What two factors affect an objects speed
Velocity
When graphed what measurment is slope of any distance time graph equal to
V=d/t
Equation for velocity
Rate at which veloctiy changes
Defintion for accelration
Decreasing change in speed
What is negative accerlation
time and veloctiy
What two facts affect accelration
accelration
When graphed what measurement is the slope of any velocity time graph equal to
Every second our speed is increasing
what does a postive accelration slope mean
a
what is the symbol for accelration
A=Vf-Vi/time
equation for velocity
m/s/s
Unit for accleration
Push or pull of an object
What is the definition of a force
Forward force
What does anf F→ mean
Friction
What does F<- mean
Weight
What does W or Fw mean
No movement
What does a balanced force mean
There is Movement
What does an unbalanced force mean
An object at rest stays at rest an object in motion stays in motion
Newtons first law
Force equals mass times accelration
Newtons second law
There is an equal reaction to every action
Newtons third law
Resistance to change movement (Lazy)
What is inertia
Friction always acts opposite to the motion
In what direction does friction react?
a force by which a planet or other body draws towards an object
What is gravity
Weight is the measure of force
What is weight
Mass is the quantity of matter
What is mass
Downwards
In what direction does weight act
9.8m/s/s
What acceleration is given to the force of gravity
Newtons
What unit is force measured in
F
What is the symbol for force
W=Mg
What is the equation for weight
Quantity of motion
What is momentum
Snowball rolling down a hill
What is a real life example using momentum
P
What is the symbol for momentum
P=mv
What are the equations for momentum?
kgm/s
What unit is momentum measured in?
Move some distance in the direction of force
What is the definition of work
Force and distance
What two facts are used to calculate work
W
What is the symbol for work
W=Fd
What is the equation for work
Joules
What unit is work measured in
Ablility to do work
What is energy
Energy of an object in motion
What is kinteic energy
KE
What is the symbol for kinteic energy
Joules
What unit is kinetic energy measured in?
Energy of position
What is potential energy
PE=mgh or PE=wh
What is the equation for potential energy
PE
What is the symbol for potential energy
Joules
What unit is potential energy measured in
Hammering a nail
Example of Mechanical energy
warmth from the sun
Example of thermal energy
burning a fire
Example of chemical energy
Flashlights
Example of electrical energy
Electricity
Example of nuclear
Rate of doing work
What is power
Watts
What unit is power measured in
P
What is the symbol for power
P=W/t
What is the equation for power
Increases the force, increases the distance, changes the direction of the force
What are three ways a machine makes work easier
Increases the force
How does a pulley make a machine easier
Increases the force applied to an object
How does a wedge make work easier
Decreases the amount of force but increases distance
How does a screw make work easier
increases the force
How does a lever make work easier
reduces force but increases the direction
How does an incline plane make work easier
allows humans to perform tasks much easier in terms of the force they need to apply
What is the purpose for calculating Ma
MA= output f/ input force
What is the equation for MA
MA
What is the symbol for MA
No units
Units of MA
Force is multiplied
If MA>1 then
Machine only changes direction
If MA=1 then
Distance is multiplied
If MA<1 then
igneous, sedimentary, metaforphic
What are three familys of rocks
3-5 cm per year
Approximately how fast do plates more
no
Do all plates move at the same speed all the time
Sea floor spearding, Age of sea floor, ocean trenches, mantle convection
5 pieces of evidence for the theory of plate tectonics
Crust, mantle, outer core, inner core
What are the four layers of the earth
Outer core is liquid inner core is solid
Which layer is solid which layer is liquid
Divergent, convergent, transform
What are main types of plate boundaries
Volcanoes
Where are divergent plates found
Mountains
Where are convergent plates found?
Earthquakes
Where are transform plates found?
Faster moving stream since it has more kinetic energy
Will fast moving stream or a slow moving stream be able to carry larger particles
Resistance to scratching and using Mohs scale
How is the hardness of a mineral estimated
Sedimentary rocks
In which family of rocks are fossils most likely to be found
Oxygen
The most abundant element in the earths crust is
liquid
S-waves cannot pass through
Solids
P-waves can pass through
Tidal waves- Shallow water by gravitonal pull
Tsunamis- Ocean wave triggered by large earthquakes
How are tsunamis and tidal waves different
P, S, and Surface waves
What are 3 waves produced by an earthquake?
Jerking motion that occurs while 2 objects slide past each other
What is the slip-stick motion and what does it cause
Focus
The zone of the surface of the earth where an earthquake originates is called the
Fault
The zone of the surface of the earth where rocks rupture or break due to an earthquake is called the
A volcano that is erupting or likely to erupt
Define Active volcano
Note
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