Electromagnetic waves do not require a ___________
What is a medium
100
When two opposing waves meet and create a higher crest and lower trough this is called ____________ interference
What is constructive
100
If a magnetic is moved through a coil of wire, this will happen.
What is a charge will be created
100
Electrostatic force is the attraction between these.
What are oppositely charged particles
200
Which one of the following is an example of a mechanical wave A) radio wave B) sound wave, C) gamma wave d) micro wave
What is a sound wave
200
All electromagnetic waves tavel at this speed in a vaccuum
What is 3 x 10^8 m/s
200
If an a amulance is traveling toward you, this will happen to the sound you hear
What is become higher pitched
200
Changing magnetic fields can create changing ___________fields.
What are electric?
200
The two factors that affect electrostatic force are
What are distance and amount of charge
300
when particles go up and down or back and fourth due to wave energy this is called...
What is oscillation?
300
electromagnetic waves only oscillate in this direction
What is transverse
300
The color of light from a star moving away from the earth appears to shift toward this end of the visible light spectrum
What is the red end
300
Which statement is true about transistors?
A) Transistors are vital for computer equipment to work
B) Transistors are used as logic switchs in cell phones
C) Transistors can be so small that thousands can fit on a computer chip
D) all of the above
What is D
300
If the distance between two charged particles this happens to the electrostatic force
What is decreases
400
Waves transfer ____________, waves do not transfer _____________
What is energy, particles
400
This is the order of the electromagnetic waves from longest wavelength to shortest wavelength
What is radio, micro, infrared, visible light, UV, X-Ray, Gamma
400
Two waves cancelling each other out is known as this
What is destructive interference
400
What device uses a changing magnetic field to produce an electrical current
What is a generator
400
electromagnetic field lines bewteen two charged particles are moving away from each other. what is the charge of the particles?
What are both positive
500
The two types of mechanical oscillation are__________ and __________
What are longitudinal and transverse
500
Visible light can be broken down into 7 different frequencies, list those frequencies from longest to shortest
What is ROY G BIV Red Orange Yellow Blue Indigo Violet
500
Filters that eliminate one direction of an electromagnetic wave are known as this
What are polarizing filters
500
If a strong magnet is passes throug a coil of wire from bottom to top, what direction will the electrical current flow?
What is counter clockwise
500
Electric field lines move _____________ a negative charge and __________ from a positive charge.