Waves in General
What do waves transfer: energy or matter?
Energy
What happens when you place ice in a hot drink?
The hot drink transfers energy to the ice which will cause the ice to melt. Since the hot drink is losing energy, it cools down.
What is amplitude? And what is wavelength?
The distance from the middle of the wave to the top. Wavelength is the distance from peak-to-peak!
What type of energy does a solar cell use?
A solar cell converts light energy to electrical energy.
What two types of waves do slinkies demonstrate?
Transverse and Longitudinal Waves
Why do circuits need to maintain a closed loop?
Electricity only flows through a completed path we call a "closed circuit." Any opening in this path will stop the flow of electricity. A common example of a closed circuit would be a battery connected to a device through TWO wires which allow the electricity to flow in a loop.
How does increasing energy affect the amplitude and wavelength of a wave?
Adding energy to a transverse wave causes the wave to become taller (amplitude increases). Adding energy to a wave causes the wavelength to become shorter, meaning the waves are closer together (wavelength decreases).
What are some ways electrical energy can be generated?
Power plants might generate electricity by using the power of moving water to spin a generator or by burning coal to produce steam, which also spins a generator
What vibrates when music plays out of a speaker?
Air particles
How can you break glass with sound?
When Dr. Jeff turns on very loud music near a pane of glass, some of that energy is converted to motion energy that causes the glass to bend, move and eventually shatter.
What kinds of patterns can be observed from transverse and longitudinal waves?
Transverse waves are a repeating pattern of peaks and troughs. This pattern remains the same although changes to the energy cause the peaks and troughs to get closer together or further apart (wavelength) or the peaks and troughs to be higher or lower (amplitude). Longitudinal waves are a repeating pattern of compression and expansion. This pattern remains the same although changes to the energy causes the compressed areas to become closer together or further apart (wavelength).
What type of energy was used to fire both of our rockets. List two!
Chemical energy and pressure (explosive) energy!