Vocabulary
The energy an object has because it is moving is _____.
What is kinetic energy?
Give an example of an object with potential energy.
Book on a bookshelf.
What is the definition for mechanical energy?
Energy an object has due to its motion, position, or condition.
The distance from a point on one wave to the same point on the next wave.
What is frequency?
Frequency is the number of waves passing a point in one second.
The energy of vibrations carried by air, water, or other substances is ________.
What is sound energy?
Give an example of an object with kinetic energy.
bird flying? airplane in air? etc.
List the 7 forms of energy.
Sound, Radiant, Electrical, Mechanical, Nuclear, Chemical, Thermal
How are the types of radiant energy the same? different?
They all travel with the same type of wave.
Each type of energy has different wavelengths.
Why must sound travel through matter?
Matter is needed for the sound to vibrate through.
As an object gets warmer, its ________ increases as the atoms and moelcules it is made of move faster.
What is thermal energy?
Give an example how kinetic energy can change into potential energy.
Listen for the example:
slowing down in a car? ball rolling on grass to a stop?
What are the three forms of energy that radiant energy changes into?
electrical, chemical, thermal
What are the 7 types of radiant energy?
gamma rays, X rays, Ultraviolet rays, visibile light, infrared rays, microwaves, radio waves
Give two examples how animals use sounds that people cannot hear.
Listen to examples.
What is radiant energy?
When riding a roller coaster with your eyes closed, you feel your speed increasing. Are you going uphill or downhill? Is your potential energy increasing or decreasing?
You most likely are going downhill and your potential energy is decreasing. Your kinetic energy is increasing.
Will a solar powered calculator work in a dark room?
Yes and no. If the calculator has a battery back up then yes. If it doesn't then no.
You can clearly see traffic signs in a car through tinted windows. Are the windows transparent, translucent or opaque?
transparent
Examine the chart on page B100-101, can a dog hear the high-frequency sounds an ultrasound machine makes?
no, it is out of the range a dog can hear.
The energy produced when atoms split or join is _____.
What is nuclear energy?
How can the potential energy of a bicycle stopped at the top of a tall hill be changed into kinetic energy?
When the rider moves the bike down the tall hill, gravity pulls the bike and the potential energy of the bike is transformed into kinetic energy.
Describe the way energy changes form when an electric light is turned on.
Mechanical energy of the person is used to turn on the light switch. Then electrical energy is pushed through the wires and to the light bulb. The electrical energy is transformed into light energy.
How does radiant energy travel?
Radiant energy travels in waves and can travel into space where there is no matter.
How does sound energy travel?
Sound energy travels in waves through matter, it needs a medium to travel through.