Potential
This type of potential energy is released when a ball falls down the stairs.
Gravitational Energy
This kinetic energy happens when you throw a football.
Mechanical Energy.
What is Thermal Energy?
The energy that moves the particles in matter.
What is pitch?
Pitch is the lowness and highness of sounds.
True or False. Energy can be potential or kinetic
True. Energy can be potential or kinetic.
This type of potential energy is used when fuels, such as wood, and gasoline, are burned.
Chemical Energy
A lightening strike is an example of this kinetic energy in nature.
Electrical Energy.
True or False. Heat is the flow of thermal energy from a cooler object to a warmer object.
False
Heat is the flow of thermal energy from a warmer object to a cooler object.
Describe how sound is produced in string instruments.
Answers may vary but Ms. S will tell you if you got it correct.
Compare the kinds of energy that a parked car and a moving car have.
Parked: Potential
Moving: Kinetic
Energy released from objects that resist being stretched out of shape is called __________.
Elastic Energy
A cup of hot water has a large amount of this kinetic energy because the particles in the hot water move quickly.
Thermal Energy
When an object is heated, the kinetic energy of the atoms that make up the object increases or decreases?
Increases because the atoms move faster and farther apart.
The place in a sound wave where particles are squeezed together is called a ___________.
The place in a sound wave where particles are squeezed together is called a compression.
Which is a source of potential energy?
a. sound
b. heat
c. a battery
d. a thrown ball
Which is a source of potential energy?
a. sound
b. heat
c. a battery
d. a thrown ball
What is the difference between potential and kinetic energy?
Potential energy is stored energy of position. Kinetic energy is the energy an object has because of its motion.
A microwave uses this type of kinetic energy to heat objects.
Electromagnetic (Radiant) Energy
Why do telephone lines tend to sage during hot weather?
The matter of the telephone lines expand and become longer when they are heated.
The place in a sound wave where the particles are spread farthest apart is a rarefaction.
How does sound change if the source of the sound is moving toward the listener?
The sound waves appears to increase in frequency as a moving object approaches a bystander. So the pitch is higher. The frequency of the same sound wave appears to decrease as it leaves the bystander. The pitch becomes lower.
What is an example of Nuclear Energy?
The Sun combining the nuclei of hydrogen atoms, hydrogen bombs, atoms in a nuclear power plant.
Energy created by the movement of compression waves through a substance such as air or water is called _____________.
Sound Energy
Why does an ice cube crack when you pour warm liquid over it?
The warm water causes the ice cube to expand rapidly, which results in a crack.
What is the difference between frequency and amplitude?
Frequency is the number of wavelengths per second and amplitude is a measure of the amount of energy in a wave.
What happens to its energy as a roller coaster travels down a hill?
Potential energy is converted to kinetic energy.