For the Record
How do record players work?
A needle transmits signals from the record´s grooves into vibrations. Amplifiers often make these vibrations louder.
Describe how a speaker works
electrical signals cause an electromagnet to create vibrations in the air.
What role did black women play at NASA in the 1950´s onward?
They began as ´computers´ and expanded into engineering and computer programming.
What are records typically made of?
Vinyl
What is an electromagnet? Hint.. you made one.
What is one accomplishment of Mae Jemison?
Astronaut, medical doctor, engineering company founder.
Before vinyl, records were typical made of what soft material?
Wax
How does a microphone work? Hint.. it´s the opposite of a speaker.
What dangerously radioactive element did Marie Curie discover?
Radium (also lesser known Polonium, named for her native Poland)
Who created the first audio recording device that could be played back?
Thomas Edison
What song by the Animals did we play on the record player?
¨House of the Rising Sun¨
C.J. Walker used chemistry and physics to become an early black millionaire. What type of consumer goods was she selling?
Hair creams and the hot comb.