THE FINAL SCIENCE PACE OF ALL TIME (def)

Question 1

Torque

Answer 1

the force that causes rotation

=(force)(lever arm length)

Question 2

The law of conservation of momentum

Answer 2

the total momentum before an impact equals the total momentum after the impact

Question 3

unstable equilibrium

Answer 3

coin balanced on its edge

Question 4

stable equilibrium

Answer 4

suitcase on its side

Question 5

neutral equilibrium

Answer 5

bowling ball

Question 6

Kinetic energy

Answer 6

energy of motion

Question 7

potential energy

Answer 7

energy due to position

Question 8

Heat

Answer 8

the total energy of a substance due to motion of all its molecules

Question 9

temperature

Answer 9

average kinetic energy of the molecules

Question 10

First law of thermodynamics

Answer 10

energy can neither be created nor destroyed

Question 11

Second law of thermodynamics

Answer 11

heat always travels from a region of high temperature to a region of low temperature

Question 12

Third law of thermodynamics

Answer 12

disorder cannot be entirely eliminated from the atoms and molecules of a body

Question 13

First law of motion

Answer 13

every body continues in its state of equilibrium unless it is compelled to change that state by forces impressed upon it

Question 14

Second law of motion

Answer 14

Resultant force acting upon a body equals the mass times acceleration of the body
F = ma

Question 15

Third law of motion

Answer 15

when any two bodies interact, the force exerted by the first body on the second is equal and opposite to the force exerted by the second on the first

Question 16

too low to be heard by the human ear

Answer 16

infrasonic

Question 17

too high to be heard by the human ear

Answer 17

ultrasonic

Question 18

measured in bels

Answer 18

sound intensity

Question 19

speeds greater than the speed of sound in a fluid

Answer 19

supersonic

Question 20

sound intensity varies inversely with the square of distance

Answer 20

inverse square law

Question 21

uses sound to find an object’s direction and distance

Answer 21

sonar

Question 22

apparent change in frequency due to motion

Answer 22

Doppler effect

Question 23

repetition of sound due to reflection

Answer 23

echo

Question 24

prolonged series of reflections of one sound

Answer 24

reverberation

Question 25

change of direction as a wave enters a new medium

Answer 25

refraction

Question 26

lowest pitch a vibrating object can produce

Answer 26

fundamental frequency

Question 27

caused by interaction of two or more waves

Answer 27

interference

Question 28

interference produces alternate rise and fall

Answer 28

beats

Question 29

one object causes another to vibrate

Answer 29

resonance

Question 30

Fourier analysis

Answer 30

the process of separating a single complex wave into a series of simple sine waves

Question 31

low and high of a transverse wave

Answer 31

trough and crest

Question 32

displacement node axis amplitude wavelength

Answer 32

.

Question 33

Optics

Answer 33

the study of light and vision

Question 34

The law of relection

Answer 34

the angle of incidence is equal to the angle of reflection

Question 35

Refraction

Answer 35

the change in the direction of light as it enters a new medium

Question 36

The index of refraction of a medium

Answer 36

ration of the speed of light in a vacuum to the speed of light in the particular medium

Question 37

The law of refraction

Answer 37

(ni)(sin@i) = (nr)(sin@r)

Question 38

Color of the rainbow now in the visible spectrum

Answer 38

indigo

Question 39

Dispersion

Answer 39

the separation of light into the visible colors of the spectrum

Question 40

Diffraction

Answer 40

the spreading out of waves after they pass through a small opening or the bending of waves as the pass along the edge of an obstruction

Question 41

negative charge

Answer 41

excess of electrons

Question 42

positive charge

Answer 42

deficit of electrons

Question 43

electrolysis

Answer 43

the liberation of an element by passing an electric current through a liquid or molten electrolyte

Question 44

Ohm's law

Answer 44

the current in a conductor is directly proportional to the electric potential and inversely proportional to the resistance

Question 45

a magnetic domain

Answer 45

a cluster of adjacent atoms that act as a tiny magnet