Show:
General Waves
Transverse vs. Longitudinal
Frequency and Parts of a Wave
Reflection, Refraction, and Diffraction
Lens Properties
100
What is a medium. Give an example.
A medium is the substance a wave travels through. Examples vary.
100
The direction in which transverse waves travel is a)toward the disturvance b) in the same direction as the disturbance c)from the disturbance downward d)at right angles (perpendicular) to the disturbance
d) at right angles (perpendicular) to the disturbance
100
If you coount how many wave crests reach the shore in a given time, you are finding what?
frequency
100
Give an example of reflection.
examples vary
100

What is the difference in the shape of Convex and Concave lenses?

Convex bulge outward at the middle. Concave bends inward at the middle.

200
Forces cause waves by a)canceling out b)moving large amounts of matter c)creating disturbances d)providing the medium
c) creating disturbances
200
You measure a transverse wavelength from one crest/trough to the next. How would you measure a longitudinal wavelength?
From one compression to the next.
200
If you increase the frequency of a wave, what happens to the wavelength?
It decreases
200

What is it called when waves move through different mediums at different speeds?

Refraction

200

What is another name for a concave lens?

Diverging

300
What is needed to cause a mechanical wave?
A force to create a disturbance in the medium
300
Sound waves, water waves, and the waves made by a rope are all what kind of wave?
Mechanical Waves
300
Label the following on the chart at the board. -crest -trough -wavelength -amplitude
Check with Mr. Hames
300

Waves bend around a rock in a river. What's this called?

diffraction

300

What happens to all light rays that move through a lens, no matter the shape? Think wave behavior.

They refract.

400

Which statement is true regarding an earthquake? a) all the waves produced remain at the source of the quake. b)waves are produced and move kinetic energy through the ground c)waves are produced and move rocky material through the ground d)waves carry Earth's surface many kilometers away and deposit it elsewhere

b)waves are produced and move kinetic energy through the ground

ALL WAVES only transfer energy.

400
Explain how a transverse wave differs from a longitudinal wave. (Tell how it transfers energy in relation to it's disturbance.
A transverse wave travels perpindicular (or in 90 degree angles) away from it's disturbance.
400

What do "FM" and "AM" stand for?

Frequency Modulation and Amplitude Modulation

400

Diffraction is a spreading out of a wave as it a) bounces back after striking a barrier b) runs into other waves that are also spreading out c) passes through an opening or around an obstacle d) passes through on medium and enters another

c) passes through an opening or around an obstacle

400

What does your brain do to the "real image" that your eyeballs make

It turns it from the upside down real image to a right side up image in your brain.

500

Roads can bend and break far away from an earthquake's epicenter. Explain how this can be so.

Energy from the quake gets transferred over a distance.

500
Give one example of a transverse wave and one example of a longitudinal wave. DO NOT use the slinky as an example.
Examples vary
500
As you increase the amplitude of a wave, you also increase_________.
energy
500

When you see your shadow on the ground, the edges are somewhat fussy or blurred. Why is this happening?

The light waves passing around you are getting diffracted.

500

What is a virtual image?

An image that forms when the light rays don't come together where the image appears to be.

Like a mirror's image.