What is
a. a system of prefixes
b. the distance between two points
c. the exact quantity people agree to use for computations
d. the interval between two events
100
Current that does NOT reverse direction is called:
What is
a. circuit current
b. alternating current
c. direct current
d. magnetic current
100
a circuit that has two or more branches for electrons to follow is a(n):
What is
a. series circuit
b. parallel circuit
c. electron circuit
d. circuit diagram
100
The upward force on an object falling through the air is
What is
a. air resistance
b. inertia
c. momentum
d. terminal velocity
100
The kinetic energy of an object increases as its __________________ increases.
What is
a. gravitational energy
b. potential energy
c. specific heat
d. velocity
200
The correct symbol for the SI unit of temperature is:
What is
a. C
b. F
c. K
d. s
200
The statement that current is equal to the voltage difference divided by the resistance is know as:
a. Faraday's Law
b. newton's Law
c. Ohm's Law
d. Einstein's equation
200
Resistance is measured in a unit called the:
What is
a. volt
b. coulomb
c. ampere
d. ohm
200
When an object moves in a circular path, it accelerates toward the center of the circle as a result of
What is
a. centripetal force
b. frictional force
c. gravitational force
d. momentum
200
Increasing the speed of an object _________________ its potential energy>
What is
a. does not affect
b. increases
c. decreases
d. changes
300
Another term for technology is:
What is
a. applied science
b. energy
c. matter
d. pure science
300
The location of the strongest magnetic forces is the :
What is
a. magnetic poles
b. electromagnets
c. magnetic fields
d. magnetic domains
300
The atoms in a magnet are:
What is
a. positively charged
b. arranged randomly
c. negatively charged
d. aligned according to magnetic field
300
When a force is exerted on a box, an equal and opposite force is exerted by the box. These forces are called ________ forces.
What is
a. action-reaction
b. centripetal
c. frictional
d. gravitational
300
The rate at which work is done is called
What is
a. efficiency
b. effort time
c. force
d. power
400
The speed you read on the speedometer is
What is
a. instantaneous speed
b. constant speed
c. average speed
d. velocity
400
Objects that keep their magnetic properities for a long time are called:
What is
a. temporary magnetics
b. magnetic domains
c. electromagnets
d. permanent magnets
400
The rate at which an electrical device converts eneergy from one form to another is called:
a. voltage regulation
b. electrical power
c. electrical resistance
d. electrical energy
400
The statement "to every action there is an equal and opposite reaction" is:
What is
a. the law of conservation of momentum
b. Newton's first law of motion
c. newton's second law of motion
d. Newton's third law of motion
400
A material that reduces the flow of heat by conduction, convection and radiation is
What is
a. a conductor
b. condensation
c. an insulator
d. a solar collector
500
Newton's first law of motion is also called the law of ;
What is
a. mass
b. inertia
c. force
d. constant velocity
500
Lightning is
What is
a. a buildup of neutrons
b. a high-voltage electric current
c. a large discharge of static electricity
d. harmless
500
A device that increases or decreases voltage in a power line is a;
What is
a. generator
b. transformer
c. magnetic current
d. alternating current
500
An object that is in free fall seems to be
What is
a. not moving
b. slowed by air resistance
c. speeded up by air resistance
d. weightless
500
An inclined plane with one or two sloping sides forms a machine called a: