Chapters 1-4
What type of mirror has a flat surface?
plane
When you hum, what do your vocal cords do?
They vibrate.
The trachea is also called the_____.
windpipe
not clear; blocking all light
opaque
Thomas Edison is well-known for inventing the ______.
light bulb
What is the greatest source of light for our planet?
the sun
The loudness or intensity of a sound is called_____.
volume
Inside the larynx are two bundles of muscle that are known as the_____.
wedge shape piece of glass
prism
Alexander Graham Bell is well-known for inventing the _____.
telephone
Opaque objects will _____________ when light hits them.
create shadows
Sound waves travel fastest through what type of medium?
solids
What system of dots and dashes was used to send messages before telephones?
Morse Code
rapid back and forth movement
vibrations
Besides the light bulb, name another Thomas Edison invention
phonograph, microphone, kinetoscope
One way light travels is in waves. What waves carry the most energy?
short waves
True or False: Sound waves need energy from the sun.
False
In 1837, what inventor created the machine called the telegraph?
Samuel Morse
the rights to make and sell something
patent
Alexander Graham Bell and Thomas Edison were born in the year_____.
1847
What type of lens would you find in a magnifying glass, microscope, or telescope?
convex lens
What type of light waves are used in a remote control?
infrared
The pitch of your voice depends on_____.
the size of your vocal cords and larynx
all the colors in the visible light we can see
Alexander Graham Bell was a professor at which university?
Boston University