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Science Study for Mid-Term
8th grade Mrs. Loeffelman RVMS Mid-Term study
21
Science
8th Grade
12/15/2008

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Cards

Term
Explain how motion occurs with respect to a particular frame of reference.
Definition
When you're driving to school, how do you know you're moving? Things are passing by as you drive, so you know that you are moving.
Term
Motion
Definition
the action or process of moving or of changing place or position; movement
Term
speed
Definition
rapidity in moving, going, traveling, proceeding, or performing, swiftness
Term
speed formula
Definition
s = d/t
Term
momentum formula
Definition
p = mv
Term
constant speed
Definition
constant speed is when an object goes the same speed over an entire distance and never accelerates
Term
average speed
Definition
an estimate saying that if this object went the same sped over an entire distance, it would go x mph
Term
constant speed
Definition
constant speed is when an object goes the same speed over an entire distance and never accelerates
Term
average speed
Definition
an estimate saying that if this object went the same sped over an entire distance, it would go x mph
Term
Compare speed and velocity.
Definition
speed is how fast an object is going, while velocity is how fast and which direction an object is going
Term
acceleration
Definition
a change in speed
Term
acceleration formula
Definition
a=(change in)v=t or a= vf - fi / t
Term
balanced force
Definition
not moving
Term
unbalanced force
Definition
moving
Term
Name the four types of friction.
Definition
Sliding, rolling, fluid, static
Term
sliding friction
Definition
book sliding on table, car skidding, brakes on bicycle
Term
rolling friction
Definition
wheels, roller-blades, bowling ball
Term
fluid friction
Definition
air resistance, swimming, skiing
Term
static friction
Definition
car parked on an incline, standing still, stationary objects
Term
fluid friction
Definition
air resistance, swimming, skiing
Term
static friction
Definition
car parked on an incline, standing still, stationary objects
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