see board
a) magnetic -- can respond to forces from magnets, but it in itself is not a magnet
Doppler Effect
E - Radio waves are only waves listed with wavelengths longer than visible light (which are measured in nanometers)
Solar photovoltaic
Violet light has
Higher frequency
Shorther wavelength
More energy
Equal speed
6Õ0 Hz
4.6 x 1012 Hz
Wave
Particle
N and S pole on each half
rods
Hydroelectric
Biomass
Iron
Cobalt
Nickel
B -- Switching directions will just change the poles (the right hand rule)
Answers may vary
B - It reflects red light
Electric Motor
Electric Generator
Nuclear energy
Fossil Fuels
beats
The north pole of the compass needle
5 x 1014 Hz
see board
See board
What would you hear when two sound waves are out of phase (out of tune, or when notes are not harmonics of each other)
Would light that has a wavelength of 434 millimeters probably be classified as
a) gamma rays
b) ultraviolet
c) x-rays
d) visible light
e) radio waves
Where is the most exotic location that someone in your group has traveled?
Instead of burning material that has been around for thousands or millions of years, most forms of this energy burn other things to heat up water to steam, which drives a turbine
A photon of light can be described as having duality of which two properties?
Which of the following is NOT a way to increase the strength of an electromagnet:
a) Increase the current through the electromagnet
b) Switch the direction of the current through the electromagnet
c) Place an iron core inside the electromagnet
d) Increase the number of coils of wire in the electromagnet
What is the frequency of a sound wave which has a speed of 334 m/sec and a wavelength of 56 cm? Answer in correct sig figs with standard SI unit!
Draw a picture labeling the poles of a permanent magnet that has been cut in half
Label the amplitude of a transverse wave
What principle states that when a sound source is moving away from an observer it will have a lower frequency and sound lower in pitch?
In 2007, about 70% of the electrical energy produced came from this source
What is the frequency of light (use scientific notation and answer in Hz) that has a wavelength of 65 micrometers?
Would you describe a refrigerator door as
a) magnetic
b) acting as a permanent magnet
c) having magnetic declination
d) being an electromagnet
e) capable of electromagnetic induction
What are the three naturally occurring magnetic elements?
What pole of the compass needle points north?
Draw the fourth harmonic of a vibrating string (standing wave)
Label the Wavelength of a transverse wave from trough to trough
What are the photoreceptors called that perceive the intensity of light (not color)
A red shirt appears red because
a) it absorbs red light
b) it reflects red light
c) it emits red light
d) it reflects white light, which stimulates red cones in the eye
This is the only type of electrical power generation that we studied with no turbine
What two electromagnetic devices have symmetry, in that electrical energy is either used or produced through the process of electromagnetic induction.
A specific isotope of Uranium is used in most of these electrical power plants which produces no greenhouse gases
Orange light has a frequency of 500 THz. Express this value in Hertz, using scientific notation.
Using the gravitational potential energy generated by the hydrologic cycle, there is very little maintenance required for these power plants.
Compared to green light, violet light has a(n) ___________ frequency, a(n) ___________ wavelength, has ___________ energy, and moves at a(n) ____________ speed.
Description | Match: |
Draw a picture labeling the poles of a permanent magnet that has been cut in half | N and S pole on each half |
What pole of the compass needle points north? | The north pole of the compass needle |
Which of the following is NOT a way to increase the strength of an electromagnet: a) Increase the current through the electromagnet b) Switch the direction of the current through the electromagnet c) Place an iron core inside the electromagnet d) Increase the number of coils of wire in the electromagnet | B -- Switching directions will just change the poles (the right hand rule) |
Would you describe a refrigerator door as a) magnetic b) acting as a permanent magnet c) having magnetic declination d) being an electromagnet e) capable of electromagnetic induction | a) magnetic -- can respond to forces from magnets, but it in itself is not a magnet |
What two electromagnetic devices have symmetry, in that electrical energy is either used or produced through the process of electromagnetic induction. | Electric Motor Electric Generator |
This is the only type of electrical power generation that we studied with no turbine | Solar photovoltaic |
Instead of burning material that has been around for thousands or millions of years, most forms of this energy burn other things to heat up water to steam, which drives a turbine | Biomass |
A specific isotope of Uranium is used in most of these electrical power plants which produces no greenhouse gases | Nuclear energy |
In 2007, about 70% of the electrical energy produced came from this source | Fossil Fuels |
Using the gravitational potential energy generated by the hydrologic cycle, there is very little maintenance required for these power plants. | Hydroelectric |
Label the amplitude of a transverse wave | See board |
Label the Wavelength of a transverse wave from trough to trough | see board |
Draw the fourth harmonic of a vibrating string (standing wave) | see board |
What principle states that when a sound source is moving away from an observer it will have a lower frequency and sound lower in pitch? | Doppler Effect |
What is the frequency of a sound wave which has a speed of 334 m/sec and a wavelength of 56 cm? Answer in correct sig figs with standard SI unit! | 6Õ0 Hz |
A photon of light can be described as having duality of which two properties? | Wave Particle |
Orange light has a frequency of 500 THz. Express this value in Hertz, using scientific notation. | 5 x 1014 Hz |
Compared to green light, violet light has a(n) ___________ frequency, a(n) ___________ wavelength, has ___________ energy, and moves at a(n) ____________ speed. | Violet light has Higher frequency Shorther wavelength More energy Equal speed |
A red shirt appears red because a) it absorbs red light b) it reflects red light c) it emits red light d) it reflects white light, which stimulates red cones in the eye | B - It reflects red light |
What is the frequency of light (use scientific notation and answer in Hz) that has a wavelength of 65 micrometers?
| 4.6 x 1012 Hz |
What are the three naturally occurring magnetic elements? | Iron Cobalt Nickel |
What would you hear when two sound waves are out of phase (out of tune, or when notes are not harmonics of each other) | beats |
Where is the most exotic location that someone in your group has traveled? | Answers may vary |
What are the photoreceptors called that perceive the intensity of light (not color) | rods |
Would light that has a wavelength of 434 millimeters probably be classified as a) gamma rays b) ultraviolet c) x-rays d) visible light e) radio waves | E - Radio waves are only waves listed with wavelengths longer than visible light (which are measured in nanometers) |