Waves & Wave Behavior
This is what happens when a wave bounces off a surface.
What is reflection?
These are electromagnetic waves that are seen by human eyes and may be the colors of the rainbow.
What is visible light?
This is the charge that electrons carry.
What is negative charge?
This is a magnet’s magnetic pole that repels another magnet’s magnetic south pole.
What is a magnetic south pole?
This Scottish-American invented the telephone.
Who was Alexander Graham Bell?
This is what happens when light waves change speed and direction when passing in or out of a new medium.
It is about 186,000 mi./s or 300,000 km/s in a vacuum.
What is the speed of light?
This is the buildup of charge due to the presence or absence of electrons.
What is static electricity?
These donut-shaped, magnetic regions around the earth capture harmful radiation from the sun.
What are the Van Allen belts?
This Serbian-American scientist developed alternating current.
It is 767 mph or 1,234 km/hr in 68°F air.
What is the speed of sound?
These are widely accepted as the primary colors of light.
What are red, green & blue?
This type of material does not conduct electricity well.
What is an insulator?
This device spins a coil of wire in a magnetic field to generate electricity.
What is a generator?
This Scottish physicist formulated the relationship between electricity, magnetism, and light.
Who was James Clerk Maxwell?
Frequency times wavelength calculates this for a given wave.
What is speed (or velocity)?
These are electromagnetic waves with higher frequency than humans can see and may be used to create pictures of bones inside a person.
What are X-rays?
This circuit is the simplest way to wire components and uses less overall power.
What is a series circuit?
This device uses electricity in a magnetic field to create mechanical energy.
What is a(n electric) motor?
This Iraqi published the Book of Optics becoming the father of optics.
Who was Alhazen?
These are sound waves with higher frequency than humans can hear but may be used to “see” a baby in its mother’s womb.
What are ultrasound waves?
This is the color that appears when the light with the lowest frequency reaches the human eye.
What is red?
This type of current changes directions at 60 Hz in the United States.
What is alternating current?
This is the magnetic field that each electron generates.
What is magnetic moment?
This American pioneered electromagnetism building his first electromagnet which could lift 750 pounds of iron.
Who was Joseph Henry?