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# Science Midterm

### 2014

Parts of Scientific Method 1.Identify the problem 2.Gather info. 3.Make a hypothesis 4.Test hypothesis 5.Analyze and conclude
4 point conclusion 1.Restate hypothesis 2.use data to support the results 3.comment on the design of the experiment 4.the larger picture
independent variable thing you are testing for
dependent variable the results
how to find speed speed=distance divided by time
velocity speed with direction
how to find velocity velocity= distance divided by time
acceleration the speed between two points
meters distance
seconds time
meters/second speed
meters/second north velocity
meters/seconds squared(2) acceleration
how to find acceleration final velocity-initial velocity/time
scientific theory the best explanation based on a tremendous amount of evidence shown many times
what makes things move forces
forces a push or pull one body exerts on another
unbalanced forces DO cause things to move
net force an unbalanced force
balanced forces do not cause things to move
Newtons 1st law A. an object at rest will stay at rest unless acted upon by a net force B. An object in motion will stay in motion unless acted upon by a net force
2 net forces friction and gravity
inertia a natural resistance to an unbalanced force
mass the amount of matter/space an object takes up
Newtons 2nd law F= M.a an object will accelerate in the direction of the force applied and will depend on the mass and amount of force
Kg mass
N force
m/s2 acceleration
gravity the farther apart things are, the less the gravitational pull weight/mass
force of gravity 9.8 m/s2
weight a force
Newton 1. father of physics 2.wrote Principia Mathmatecia
Principia Mathmatecia has all the laws of motion
Newtonian telescope -uses 2 sets of mirrors -smaller- can see farther -didn't distort color or light
terminal velocity the point when an object reaches its maximum velocity
projectile motion the path that projectile motion
centripetal force the tendency of a body to lean inwards toward the center
weightlessness no such thing: free falling objects
Newtons 3rd law for every action there is a reaction
centrifical force leans outwards
Created by: julia13