Edexcel iGCSE Double Award Physics |\ |\ |\ |\ |\
Revision questions with answers |\ |\ |\
independent variable - CORRECT ANSWERS ✔✔the factor you |\ |\ |\ |\ |\ |\ |\ |\
change in an experiment that causes a change
|\ |\ |\ |\ |\ |\ |\
dependent variable - CORRECT ANSWERS ✔✔the measured
|\ |\ |\ |\ |\ |\ |\
variable that depends on the value of the independent variable
|\ |\ |\ |\ |\ |\ |\ |\ |\
conclusion - CORRECT ANSWERS ✔✔the answer to the problem
|\ |\ |\ |\ |\ |\ |\ |\ |\
written as a statement
|\ |\ |\
distance - CORRECT ANSWERS ✔✔how far an object has moved
|\ |\ |\ |\ |\ |\ |\ |\ |\
displacement - CORRECT ANSWERS ✔✔how far an object has |\ |\ |\ |\ |\ |\ |\ |\ |\
moved from its original starting place
|\ |\ |\ |\ |\
average speed - CORRECT ANSWERS ✔✔total distance divided by
|\ |\ |\ |\ |\ |\ |\ |\
total time
|\ |\
balanced forces - CORRECT ANSWERS ✔✔forces that are equal in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
size and opposite in direction; they do not move an object and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the net force is equal to zero.
|\ |\ |\ |\ |\ |\
, unbalanced forces - CORRECT ANSWERS ✔✔forces that are |\ |\ |\ |\ |\ |\ |\ |\
unequal in size and the direction is the same; they cause an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
object to move |\ |\
velocity - CORRECT ANSWERS ✔✔the speed and direction of an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
object's motion; EX: 25 mph North;
|\ |\ |\ |\ |\
is a vector ie. it has magnitude and direction5 km/hr upstream
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The Law of Conservation of Momentum - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔any time two or more objects interact they may exchange
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
momentum but the total amount of momentum stays the same;|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
momentum before = momentum after M1XV1 = M2V2 |\ |\ |\ |\ |\ |\ |\ |\
momentum is conserved |\ |\
Newton's 1st Law of Motion - CORRECT ANSWERS ✔✔an object in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
motion stays in motion and an object at rest stays at rest until a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
net force acts upon the object (LAW OF INERTIA)
|\ |\ |\ |\ |\ |\ |\ |\
Newton's 2nd Law of Motion - CORRECT ANSWERS ✔✔Force=
|\ |\ |\ |\ |\ |\ |\ |\ |\
mass x acceleration; the larger something is, the harder it is to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
move
Newton's 3rd Law of Motion - CORRECT ANSWERS ✔✔Forces
|\ |\ |\ |\ |\ |\ |\ |\ |\
always occur in pairs; the forces will always be equal and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
opposite (for every action there will be an equal and opposite
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
reaction)
Revision questions with answers |\ |\ |\
independent variable - CORRECT ANSWERS ✔✔the factor you |\ |\ |\ |\ |\ |\ |\ |\
change in an experiment that causes a change
|\ |\ |\ |\ |\ |\ |\
dependent variable - CORRECT ANSWERS ✔✔the measured
|\ |\ |\ |\ |\ |\ |\
variable that depends on the value of the independent variable
|\ |\ |\ |\ |\ |\ |\ |\ |\
conclusion - CORRECT ANSWERS ✔✔the answer to the problem
|\ |\ |\ |\ |\ |\ |\ |\ |\
written as a statement
|\ |\ |\
distance - CORRECT ANSWERS ✔✔how far an object has moved
|\ |\ |\ |\ |\ |\ |\ |\ |\
displacement - CORRECT ANSWERS ✔✔how far an object has |\ |\ |\ |\ |\ |\ |\ |\ |\
moved from its original starting place
|\ |\ |\ |\ |\
average speed - CORRECT ANSWERS ✔✔total distance divided by
|\ |\ |\ |\ |\ |\ |\ |\
total time
|\ |\
balanced forces - CORRECT ANSWERS ✔✔forces that are equal in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
size and opposite in direction; they do not move an object and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
the net force is equal to zero.
|\ |\ |\ |\ |\ |\
, unbalanced forces - CORRECT ANSWERS ✔✔forces that are |\ |\ |\ |\ |\ |\ |\ |\
unequal in size and the direction is the same; they cause an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
object to move |\ |\
velocity - CORRECT ANSWERS ✔✔the speed and direction of an
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
object's motion; EX: 25 mph North;
|\ |\ |\ |\ |\
is a vector ie. it has magnitude and direction5 km/hr upstream
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
The Law of Conservation of Momentum - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔any time two or more objects interact they may exchange
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
momentum but the total amount of momentum stays the same;|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
momentum before = momentum after M1XV1 = M2V2 |\ |\ |\ |\ |\ |\ |\ |\
momentum is conserved |\ |\
Newton's 1st Law of Motion - CORRECT ANSWERS ✔✔an object in
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
motion stays in motion and an object at rest stays at rest until a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
net force acts upon the object (LAW OF INERTIA)
|\ |\ |\ |\ |\ |\ |\ |\
Newton's 2nd Law of Motion - CORRECT ANSWERS ✔✔Force=
|\ |\ |\ |\ |\ |\ |\ |\ |\
mass x acceleration; the larger something is, the harder it is to
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
move
Newton's 3rd Law of Motion - CORRECT ANSWERS ✔✔Forces
|\ |\ |\ |\ |\ |\ |\ |\ |\
always occur in pairs; the forces will always be equal and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
opposite (for every action there will be an equal and opposite
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
reaction)
