Chapter 9.3 Review (7th) Question Preview (ID: 34732)
Conservation Of Energy.
TEACHERS: click here for quick copy question ID numbers.
A force that opposes motion between two surfaces that are touching
a) gravity
b) friction
c) energy
d) efficient
A comparison of the amount of energy before a conversion with the amount of useful energy after a conversion
a) ratio
b) conversion
c) system
d) energy efficiency
Perpetual motion is impossible because
a) things tend to slow down.
b) energy is lost.
c) machines are very inefficient.
d) machines have friction.
Whenever one form of energy is converted into another, some of the original energy is always converted into which type of energy?
a) light
b) thermal
c) kinetic
d) sound
On a roller coaster, where is the potential energy the greatest?
a) at the bottom of the first hill
b) at the top of the first hill
c) at the bottom of the second hill
d) at the top of the second hill
When a group of objects move energy only to each other, you have a(n)
a) Thermal
b) Closed System
c) Law of Conservation of Energy
d) Energy
The total amount of ______________________________ in a closed system is always the same.
a) Thermal
b) Closed System
c) Law of Conservation of Energy
d) Energy
shape of a car that helps it be more energy efficient
a) closed system
b) energy efficiency
c) friction
d) aerodynamic
rule that states that energy cannot be created or destroyed
a) law of conservation of energy
b) closed system
c) energy efficiency
d) aerodynamic
When there is friction on a roller coaster, some of the potential energy is not converted into
a) kinetic energy
b) nuclear energy
c) light energy
d) chemical energy
Whenever one form of energy is converted into another, some of the original energy is always converted into which type of energy?
a) light
b) thermal
c) kinetic
d) sound
When a roller coaster moves, what helps to overcome friction?
a) friction
b) current
c) energy
d) movement
When energy is converted, what type of energy is wasted?
a) thermal energy
b) light energy
c) kinetic energy
d) sound energy
What is a perpetual motion machine?
a) a machine that stops running
b) a machine that runs forever
c) a machine that slows down
d) a machine that speeds up
this is a comparison of the amount of energy before a conversion with the amount after
a) shape of the car
b) energy efficiency
c) thermal energy
d) friction
this is reduced with a better shaped car
a) shape of the car
b) energy efficiency
c) thermal energy
d) friction
this helps cars use energy in a more useful way
a) shape of the car
b) energy efficiency
c) thermal energy
d) friction
Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 34732 in the upper right hand corner or click here.
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 34732 in the upper right hand corner or click here.
TEACHERS / EDUCATORS
Log In | Sign Up / Register
Log In | Sign Up / Register