Science, Physics - Motion & Wave +Sound

Question 1

formula for speed

Answer 1

speed = distance/time

Question 2

formula for distance

Answer 2

distance = speed x time

Question 3

formula for time

Answer 3

time = distance/speed

Question 4

acceleration graph

Answer 4

goes up (/)

Question 5

stationary/constant speed graph

Answer 5

goes straight (-)

Question 6

deceleration graph

Answer 6

goes down ()

Question 7

sound

Answer 7

• produced by vibrations traveling in mediums (solid / liquid / gas)
• cannot travel in a vacuum (empty space)

Question 8

how to calculate how far an object has traveled

Answer 8

• triangle shaped
• area = 1/2 x base x height

Question 9

how to calculate how far an object travel at a constant speed

Answer 9

• square
• area = base x height

Question 10

waves

Answer 10

• transfer energy & info without transferring any material with no mass
• has to have one trough & 1 crest

Question 11

trough

Answer 11

very bottom of the wave

Question 12

crest

Answer 12

very top of wave

Question 13

amplitude

Answer 13

distance from resting position to crest/trough

Question 14

wavelength

Answer 14

distance between crest-crest or trough-trough

Question 15

frequency

Answer 15

• no. of waves per second
• what you see (graphs)

Question 16

compressions

Answer 16

pushed together on a longitudinal wave graph

Question 17

rarefaction

Answer 17

stretched out on a longitudinal wave graph

Question 18

pitch

Answer 18

what u hear

Question 19

high frequency =
low frequency =

Answer 19

high frequency = high pitch
low frequency = low pitch

Question 20

amplitude

Answer 20

• is the amount of energy the wave has
• measuring the height of the wave (resting position - crest/trough)
• taller the crest & trough the louder the sound

Question 21

smaller amplitude =
larger amplitude =

Answer 21

smaller amplitude = softer sound
larger amplitude = louder sound

Question 22

high frequency

Answer 22

more waves in 1 sec

Question 23

low frequency

Answer 23

less waves in 1 sec

Question 24

speed of sound

Answer 24

330 m/s

Question 25

sound travels through ________ the _________. because _________ are easier passed since particles are so ______.

Answer 25

1. solid
2. fastest
3. vibrations
4. close