Unit 6 test

Question 1

what is harmonic motion?

Answer 1

oscillating objects and their motion

Question 2

what is an oscillationing object?

Answer 2

objects that move back and forth over the same path

Question 3

what is equilibrium position?

Answer 3

The resting position of oscillating objects

The position objects return to and will rest at if no force is applied

Question 4

what is restoring force?

Answer 4

The pull of an oscillating object back towards it’s equilibrium position.

Question 5

what is the formula for hooks law?

Answer 5

F=-KX

F=restoring force (N)
k=spring constant (N/M)
X=displacement form E.P. (M)

Question 6

why is the negative in the formula for Hook’s law significant?

Answer 6

it’s a result of force and displacement working in opposite directions

Question 7

what is a mechanical wave?

Answer 7

wave that travels through a medium-a tangible pathway

Question 8

what is an electromagnetic wave?

Answer 8

waves that do not require a medium- light wave

Question 9

what is the difference between an electromagnetic wave and a mechanical wave?

Answer 9

mechanical waves do require a medium and electromagnet waves don’t

Question 10

what is a transverse wave?

Answer 10

oscillations of the wave and it’s motion are perpendicular

Question 11

what is a longitudinal waves?

Answer 11

oscillations are in the same direction as the waves motion

vibrate parelle to the direction of energy transfere

Question 12

what is the difference between longitudinal and transverse waves?

Answer 12

transverse waves oscillate and move perpendicularly
while longitudinal waves move in the same direction as the waves motion (parelle)

Question 13

what is the period of a wave?

Answer 13

amount of time it takes for a wave to travel one “cycle”

Question 14

why will an object go past it’s E.P. when a restoring force is acting on it? what dies the object have that will continue it’s motion?

Answer 14

the object had inertia

Question 15

what is the difference between a transverse and longitudinal wave?

Answer 15

a transverse wave moves perpendicular to the direction of the wave while longitudinal waves move parallel to the direction of energy transfer of the wave

Question 16

what is the relationship between period and frequency?

Answer 16

Period: amount of time for one cycle

Frequency: amount of cycles per unit time

there relationship is that they are reciprocals

Question 17

if the wavelength of a wave increases, what happens to it’s frequency?

Answer 17

it decreases

Question 18

why would increasing the wavelength of a wave decrease the frequency of that wave?

Answer 18

The time will remain the same, but by increasing distance it mean less waves in the same amount of time ( less/ lower frequency)

Question 19

what is constructive interference?

Answer 19

when the crests, or highest points, of one wave overlap the crests of the other wave.

As the waves pass through each other, the crests combine to produce a wave with greater amplitude.

Question 20

what is destructive interference?

Answer 20

when the crests of one wave overlap the troughs, or lowest points, of another wave.

As the waves pass through each other, the crests and troughs cancel each other out to produce a wave with zero amplitude.

Question 21

what is a standing wave?

Answer 21

When waves are reflected straight back from an obstacle, the reflected waves interfere with the original waves and create standing waves.

Standing waves appear to be standing still due to a combination of constructive and destructive interference.

Question 22

what is wave interference?

Answer 22

When waves run into each other, it affects their amplitude (the maximum distance the particles of the medium move away from their resting position).

Question 23

what is the importance of wave speed?

Answer 23

wave medium is what a wave travels through

waves travel fastest in solids and travel slower in gases

Question 24

why do solids travel fastest through solids?

Answer 24

because the particles are closer together which means that energy can travel faster

Question 25

what is wave interference?

Answer 25

the combination of waves to produce a resultant wave