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definitions
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short answer
multiple choice
all about energy
100
When a bat hits a baseball, which of the following is transferred from the bat to the ball? a. work b. energy c. force d. electrical energy
b. energy
100
What is the energy an object has because of it position?
potential energy
100
As a baseball flies through the air after being hit, which of the following types of energy does it have? a. potential b. kinetic c. mechanical d. chemical
kinetic energy
100
Which of the following is a conversion from light energy to chemical energy? a. turning on a stove to heat dinner b. turning on a lamp c. growing an apple tree d. making toast in a toaster
growing an apple tree
100
Any time an energy conversion takes place, some of the original energy is converted into which other energy?
thermal energy
200
What is the energy of moving electrons?
electrical energy
200
What is the total energy of motion and position of an object?
mechanical energy
200
What is the formula for finding kinetic energy?
KE=mv^2/2
200
Which of the following can measure the energy from the sun? a. radiometer b. energy meter c. thermometer d. thermal meter
radiometer
200
What is found when you compare the amount of energy before a conversion with the amount of energy present after a conversion?
energy efficiency
300
What is the energy of motion?
kinetic energy
300
What is the energy that is given to an object that is lifted?
gravitational potential energy
300
What is a force that opposes motion between two surfaces that are touching called?
friction
300
When is the potential energy the greatest in a roller coaster? a. at the bottom of the first hill b. at the top of the first hill c. at the top of the second hill d. at the bottom of the second hill
at the top of the first hill
300
At which point(s) does the pendulum have the most potential energy?
points A & E
400
What is the ability to do work?
energy
400
What is all of the kinetic energy due to the random motion of the particles that make up an object?
thermal energy
400
What happens when electrical energy is changed to thermal energy?
an energy conversion takes place
400
After an energy conversion, you end up with the same total amount of energy as the original amount of potential energy. Which of the following laws explains this rule? a. law of energy changes b. law of conservation of energy c. law of power and energy
law of conservation of energy
400
At which point(s) does the pendulum have the most kinetic energy?
point c
500
What is the energy caused by an object's vibrations?
sound energy
500
What is the energy that is produced by vibrations of electrically charged particles?
light energy
500
When you eat fruits and vegetables, which of the following types of energy are you taking in? a. thermal b. sound c. electrical d. chemical
chemical energy
500
Fossil fuels are considered which of the following? a. nonrenewable resources b. renewable resources c. kinetic resources d. solar resources
nonrenewable resources
500
Why does the pendulum stop short of the starting position?
Energy is lost to friction