Sciece Physics Revision

Question 1

What is excitation?

Answer 1

When the electrons absorb the wavelength of light as energy and they Jump up energy levels

Question 2

What is deexcitation?

Answer 2

When the elections fall back down to their ground energy level and release the excess energy as light

Question 3

What is wavelength?

Answer 3

The distance between two matching points on neighboring waves

Question 4

What is amplitude

Answer 4

Maximum displacement from rest position

Question 5

What is a progressive wave

Answer 5

A moving wave that carried energy from one place to another

Question 6

What is the calculation to calculate wave speed

Answer 6

Frequency times wavelength

Question 7

What is a transverse wave

Answer 7

Oscillations are perpendicular to wave travel

Question 8

What is a longitudinal wave

Answer 8

Oscillations are parallel to the direction of wave travel

Question 9

What is a stationary wave

Answer 9

Two waves traveling in opposite directions usually caused by reflections

Question 10

Which type of wave out of transverse and longitudinal is plane polarized

Answer 10

Tranverse

Question 11

What is the phase difference from A to B

Answer 11

180 degreees

Question 12

What is the phase difference from A to C

Answer 12

270 degrees

Question 13

What is the phase difference from A to D

Answer 13

360 degrees

Question 14

What is the phase difference from A to E

Answer 14

90 degrees

Question 15

What is the phase difference of dark spots

Answer 15

180

Question 16

What is the phase difference of bright spots

Answer 16

0

Question 17

Out of bright spots and dark spots which one has constructive interference

Answer 17

Bright spots

Question 18

What is refractive index

Answer 18

The ratio of the speed of light in a vacuum compared to the speed of light in a material

Question 19

What is electronegativity

Answer 19

The tendency to attract the bonding pair of electrons

Question 20

What is covalent bonding

Answer 20

Bonding involving the sharing of outer shell electrons, covalent bonds are very strong

Question 21

Why does simple molecules have a low melting and boiling point

Answer 21

Because if weak intermolecular forces

Question 22

Describe bright spots

Answer 22

It has constructive interference
It has maximum amplitude and the waves are in phase and it has got a phase difference of 0

Question 23

Describe dark spots

Answer 23

It has got minimum amplitude and it has got destructive interference the waves are out of phase and it has got a phase difference of 180 degrees

Question 24

What is the equation to calculate refractive index

Answer 24

N= c over v

Question 25

What is displacement

Answer 25

Maximum amplitude from equilibrium position

Question 26

What is needed for total internal reflection to happen

Answer 26

The angle of incidence has to be bigger than the critical angle and n1 has to be bigger than n2

Question 27

What is the equation to calculate critical angle

Answer 27

N = 1 divided by sin(c)

Question 28

What is the equation to calculate intensity

Answer 28

I= k over r squared

Question 29

What is interference

Answer 29

Waves affected by other waves

Question 30

What is diffraction

Answer 30

Waves spread out as they pass through a gap

Question 31

What is refraction

Answer 31

Effects due to waves passing a boundary causing a change in the speed of the wave

Question 32

What are the conditions for a stationary wave

Answer 32

Traveling in opposite directions Same frequency Constant phase difference

Question 33

What does coherent mean

Answer 33

Same frequency but different constant phase

Question 34

What are some examples of longitudinal waves

Answer 34

Sound Primary seismic waves

Question 35

What are some example of transverse waves

Answer 35

Light waves Radio waves

Question 36

What is the acronym for inverse square law

Answer 36

F- aster A- away S- lower T- owards