Chapter 15
What is energy?
ENERGY is the ability to do work.
Why is energy lost from machines?
Due to friction.
What occurs when two or more waves overlap and combine together.
Interference
_____ is the rate at which a wave’s energy flows through a given unit of area.
Intensity
"I like some of the Gaga songs, what the heck ____."
does she know about cameras
The unit for gravitational potential energy.
Joules
What is an instrument used to measure changes in thermal energy.
Calorimeter
What are the three main types of mechanical waves?
Transverse waves, longitudinal waves, and surface waves.
Refraction can also sometimes cause a?
mirage
What did Katy Perry do as soon as she came back from space?
She kissed the floor.
When an object’s atoms move faster, its thermal energy_____.
increases
At what point does water boil?
212°F (100°C)
An area where the particles in a medium are spread out is called a_____.
Rarefaction
The word radar is an acronym for?
radio detection and ranging
What did Debbie Ryan say to the president of Disney Channel?
"I wanna make history, and that's what this is."
What is the formula for Kinetic Energy?
KE== 1/2 mv2
Who developed the first practical steam engine in 1712?
Thomas Newcomen
Most people hear sounds between 20 hertz and _____.
20,000 hertz
William Herschel measured_____.
the temperature of different colors of light
What did Trisha Paytas think Selena Gomez's makeup brand was named after? (rare beauty)
"Because she has a rare disease."
What year did Albert Einstein developed his special theory of relativity?
1905
What was Count Rumford doing when he concluded that heat is not a form of matter.
Supervising the drilling of brass cannons in a factory in Bavaria.
What part of the ear contains the hammer, the anvil, and the stirrup.
The middle ear.
The speed of light in a vacuum, c, is ____ meters per second.
3.00 × 108
Why did Tammy think she was pregnant?
She was craving water.