science

Question 1

energy possessed by a body by virtue of it’s position

Answer 1

potential energy

Question 2

potential energy influenced by gravity

Answer 2

gravitational potential energy

Question 3

SI unit of potential energy

Answer 3

joules(j)

Question 4

possessed by elastic bodies when they are deformed

Answer 4

elastic potential energy

Question 5

stored in gas when engine starts

Answer 5

chemical potential energy

Question 6

energy tapped from wall sockets to electric devices

Answer 6

electric potential energy

Question 7

formula for Gpe

Answer 7

mgh or massgravityheight

Question 8

formula for epe

Answer 8

1/kx^2

Question 9

formula for k

Answer 9

f/x

Question 10

formula of f

Answer 10

f=kx

Question 11

produced by vibrating matter

Answer 11

sound

Question 12

space without matter

Answer 12

vacuum

Question 13

has particles that sound can travel through

Answer 13

medium

Question 14

6th century-amplitude of a string instrument

Answer 14

pythagoras

Question 15

50BC-vibrating string strikes air sound is not the movement of the air but rather a vibrating body disturbing it’s surroundings

Answer 15

aristotle

Question 16

we hear and perceive as sound

Answer 16

vibrations

Question 17

roman philosopher discovered sound is a wave

Answer 17

anicius manlius severinus boethius

Question 18

invented the tuning fork

Answer 18

john shore

Question 19

used for tuning instruments

Answer 19

tuning fork

Question 20

english mathematician

Answer 20

lord rayleigh

Question 21

austrian physicist

Answer 21

ernst mach

Question 22

german physicist

Answer 22

herman von helmholtz

Question 23

we use to produce sound

Answer 23

vocal cords

Question 24

sound travels in a series of______and ______

Answer 24

compressions and rarefractions

Question 25

pushed:______,pulled:_____

Answer 25

compressed,rarefield

Question 26

sound is a

Answer 26

longitudinal wave

Question 27

created after pulling and pushing out of a medium

Answer 27

longitudinal waves

Question 28

the waves move-_____to motion of material

Answer 28

parallel

Question 29

higher temperature the higher the

Answer 29

kinetic energey

Question 30

speed of sound at air temp 0 degrees

Answer 30

332m/s

Question 31

temperature increases the speed of sound increases by

Answer 31

0.6m/s

Question 32

formula for speed of sound

Answer 32

v=v0 degree+(0.6ms/c)T or v=332m/s +(0.6*T)

Question 33

formula for speed if wavelenght is given

Answer 33

v=(lambda)(f)

Question 34

occurs when sound bounces back

Answer 34

reflection of sound

Question 35

reflected sound from surfaces

Answer 35

echo

Question 36

used to determine ocean depth

Answer 36

sonar

Question 37

sonar stands for

Answer 37

sound navigation and ranging

Question 38

speed of waves in a medium is_____the distance between the barrier

Answer 38

constant

Question 39

operate and maintain sonar system

Answer 39

sonar technicians

Question 40

source is detemined by

Answer 40

v=d/t,d=vt,t=d/v

Question 41

The time it takes to travel the distance between the barrier and source is half of the time.

Answer 41

d=vt/2

Question 42

bending of sounds as they travel

Answer 42

refraction of sound

Question 43

causes sound to be carried further and heard more during night

Answer 43

refraction of sound

Question 44

sound travels faster when_____so curves_____

Answer 44

hotter,up

Question 45

sound travels faster when_____so curves_____

Answer 45

hotter,down

Question 46

bending of sound around barriers through small openings

Answer 46

diffraction of sound

Question 47

overlapping of waves from different sources

Answer 47

inteference of sound

Question 48

occurs when two waves combine to make 1 big wave with more amplitude

Answer 48

constructive interference

Question 49

occurs when 2 waves combine to produce a wave with smaller amplitude

Answer 49

destructive interference

Question 50

contains a microphone that picks up ambient noise

Answer 50

noise cancelling head set

Question 51

two or more microphones that receive sound from different directions

Answer 51

noise cancelling microphones

Question 52

captures valid noise

Answer 52

primary microphone

Question 53

captures background noise

Answer 53

secondary microphone