Waves and Energy
Each correctly answered question is worth 1 point If a group answers a question incorrectly, the next group can answer for double the points. The points continue doubling until one group gets answers the question correctly!
It is a hot summer day and you have soccer camp. What color shirt and short combo will you wear and why?
Avoid wearing dark color clothes because it will make you hotter! The reason is because dark colored objects absorb more heat than lighter colored objects!
The sun produces a lot of energy, but the earth only takes a little bit. It’s like comparing the ALL of food made by a cafeteria to the amount of food eaten by a single student. Why does only a part of the sun’s energy come to earth?
The sun radiates energy in ALL directions, not just towards planet Earth.
Describe what a loud, high pitched sound may look like using the words “frequency” and “amplitude”
Loud = high amplitude High pitched = high frequency
Describe what a quiet, low pitched sound may look like. Use the words “frequency” and “amplitude” in your description!
Quiet – small amplitude Low pitch – low/small frequency
Several students made straw saxophones for a science project. Look at the table for information: Which student produced the saxophone with the HIGHEST frequencies and how do you know? StudentStraw Length (cm) A15 cm B8 cm C8.5 cm D5.5 cm E7 cm
The shortest straw will cause the highest frequencies, therefore student D would have the highest pitched saxophone!
How are playing a violin, playing a drum, and throwing a rock into a lake all related?
They all produce vibrations!
Which of the following accurately shows the “wavelength” of a transverse wave?
BB
A TV channel broadcasts at a certain frequency. If the broadcast frequency is increased, what happens to the speed and wavelength?
The speed would remain the same while the wavelength decreased.
True or False: Colors absorb light differently
TRUE! Darker colors absorb more light energy and at a faster rate!
A B C D E If string A begins to swing back and forth, which string would start to swing and why?
String E would vibrate because string A and E share the same resonant frequency
A red sound ball, when thrown, whistles as it zooms in the air. Which direction is the red sound ball moving in the image below?
The sound ball is moving to the right! The compressions of the sound waves are on the right hand side!
Which person would hear a higher pitched sound as the red sound ball goes through the air?
The man in the yellow mask would hear the higher pitch sound.
What is the term for the transfer of energy through electromagnetic waves?
Radiation!
Which direction from the epicenter does an earthquake travel?
Outward in ALL directions
Sound waves are an example of a mechanical, longitudinal wave. That means sound waves must move as _______________ and ______________.
Compressions and Rarefactions!
Which waves, along the electromagnetic spectrum, would be best to use for medical procedures because of their HIGH frequency?
X-Rays and Gamma Rays
What is the term for the nuclear reaction that takes place in the core of the sun and changes H atoms into He atoms also producing great amounts energy in the form of heat and light?
FUSION!
A wave is said to have high amounts of energy passing through it. Without changing the frequency, what could you say about the amplitude?
It is most likely higher.
Through which medium does sound travel the fastest?
Solid
Why do you normally find soft seats, curtains, and padded walls in a movie theatre?
The sound is absorbed better, making the theatre quieter. Reducing echoes gives a nicer, pure sounds that the movie intended you to hear!