Show:
Using Electricity and Magnetism
Electronics
Characteristics of Waves
Sound
Light
100
a solenoid with a ferromagnetic core
What is an electromagnet?
100
two basic kinds of electronic signals
What are analog and digital?
100
waves that require a medium through which to travel
What are mechanical waves?
100
sound is what kind of wave
What is a longitudinal wave?
100
any two colors that can combine to form white light
What are complementary colors?
200
device that measures small currents
What is a galvanometer?
200
a material that conducts current better than insulators but not as well as conductors
What is a semiconductor?
200
frequency is measured in
What is Hertz?
200
the amount of energy a a sound wave carries per second through a unit area
What is intensity?
200
the image you see in a plane mirror
What is a virtual image?
300
the energy an object has due to its movement or position
What is mechanical energy?
300
a wave that consists of moving or changing electric and magnetic fields
What is an electromagnetic wave?
300
Formula to find speed
What is SPEED= Wavelength x Frequency
300
how low of high a sound seems
What is pitch?
300
concave mirrors can form what type of images
What are real or virtual images?
400
induced wire that reverses direction repeatedly
What is alternating current?
400
idea or creative work
What is intellectual property?
400
the bending of waves due to a change in speed
What is refraction?
400
the speed of sound depends on 3 things
What is elasticity, density, and temperature?
400
image of a distant object caused by a refraction of light
What is a mirage?
500
device that increase or decreases voltage
What is a transformer?
500
programs that interfere with the normal operation of a computer
What is a computer virus?
500
increase in the amplitude of a vibration that occurs when external vibrations match an object's frequency
What is resonance?
500
the change in frequency of a wave as its source moves in relation to the observer
What is the Doppler effect?
500
what part of the eyes is made of rods and cones
What is the retina?