Magnetism
Acceleration
Electricity
Forces and Motion
Energy
100
What is a magnet?
an object that creates a magnetic field
100
An object was moving north at 10 meters per second. The object speeds up and now is moving north at 17 meters per second. Is it accelerating or deaccelerating
Accelerating
100
can a source of electricity run out of electrons?
No
100
What is the unit of measure for force
Newtons
100
Which uses the most energy in American homes each year?
Lighting
200
how is magnetism created?
by the motion of electrons within its atoms
200
What is velocity?
- Displacement is how much your position has changed in what direction
200
how is eletricity made?
the movement of electrons through atoms
200
In a tug of war, when one team is pulling with a force of 100 N and the other 80 N, what is the net force
20 Newtons
200
The U.S. consumes lots of energy. Which fuel provides the most energy?
Natural gas
300
How many poles does a magnet have?
two, north and south
300
What is the equation for acceleration
300
What is a practical use of electricity
circuits, lightbulbs
300
Newton's First Law of Motion is also called
Law of Inertia
300
what is enegry?
the capacity of doing work
400
is a magnet a force or an enegry source?
Force
400
A girl travels 20 miles on her bicycle. The trip takes 2 hours. Express her speed in miles/hr.
S =10 mi/hour
400
how is electricity generated?
wind, water and solar
400
In the equation F = ma, what does m represent
Mass
400
what is kinetic energy?
he energy of motion, observable as the movement of an object or subatomic particle.
500
What is the strongest magnet?
neodymium
500
A car starts from a stoplight and is traveling with a velocity of 10 m/sec east in 20 seconds. What is the acceleration of the car?
0.5 m/sec2
500
what stops the flow of electricity?
Insulator
500
How much net force is required to accelerate a 2000 kg car at 3.00 m/s2
6000 Newtons
500
whats the strongest time of enegry?
nuclear energy