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WORK & POWER
KE & PE & STUFF
CIRCULAR MOTION & COG
LIGHT
o_0
100
The unit of work is the ____.
What is the joule?
100
As you lift a book up it's potential energy _____.
What is increases?
100
Does a child on a merry-go-round revolve or rotate around the merry-go-round’s axis?
What is revolve?
100
How long does light take to travel a distance of one light year?
What is 1 year?
100
What is the best angle for sunlight to create a rainbow?
What is 42 degrees?
200
The unit of power is the _____.
What is the watt?
200
The kinetic energy of an object depends on the mass of the object as well as it's _____.
What is speed?
200
When you whirl a cup at the end of a string in a circular path, what is the direction of the force that acts on the cup?
What is inward? (toward the center of the circle)
200
How long does light take to travel from the sun to Earth?
What is 8 minutes?
200
True or false: The magnetic field lines around a wire carrying a current form a series of concentric circles.
What is true?
300
A wheel barrel is an example of a _____.
What is a lever?
300
As a pendulum swings back and forth at the lowest part of its swing, its energy is all ________.
What is kinetic?
300
An object can be tipped until the center of gravity extends beyond the _____ base and then it topples over?
What is support?
300
When light is reflected off a flat mirror, the angle of ____ is the same as the angle of reflection.
What is incidence?
300
Regions that produce magnetic forces are called ____.
What are domains?
400
Which requires more work: lifting a 50 kg sack vertically 2 meters or lifting a 25-kg sack vertical 4 meters? W = F d
What is both require the same amount of work?
400
An object that has linear kinetic energy must be ____.
What is moving?
400
Is the gravitational potential energy more, less, or unchanged when the center of gravity of an object is raised?
What is more?
400
Refraction is caused by a difference in the ____ of the wave across two mediums (air and water).
What is speed?
400
Ohm’s law relates ___, ___ and ___.
What are voltage, current and resistance?
500
The ratio of output force to input force of a simple machine is called the ______________ _______________.
What is mechanical advantage?
500
Potential energy is the energy an object has because of its ____.
What is location?
500
In which of the following food items is the center of gravity located at a point where there is no mass? Cookie Donut Apple
What is a donut?
500
True or False: Two colors of light that add together to form black light are called complementary colors.
What is false?
500
How much voltage is required to make 3 amperes flow through a 15-ohm resistor? (resistance = voltage / current)
What is 5 volts?