P2.1 Waves

Question 1

What are all waves produced as a result of?

Answer 1

Vibrations

Question 2

What type of wave is one in which the particles vibrate parallel to the direction in which the wave is travelling?

Answer 2

Longitudinal Wave

Question 3

What are 4 examples of a longitudinal wave?

Answer 3

Sound Waves
Ultrasound waves
Slinky spring waves
P-type earthquake waves

Question 4

What are places where particles in a longitudinal wave bunch together?

Answer 4

Compressions

Question 5

What are places where the coils or particles in a longitudinal wave are furtherest apart?

Answer 5

Rarefactions

Question 6

What type of wave is one in which the particles vibrate perpendicular to the direction in which the wave is travelling?

Answer 6

Transverse Wave

Question 7

What is the term for the number of complete waves passing a fixed point in a second?

Answer 7

Frequency

Question 8

What are the 4 examples of transverse waves?

Answer 8

Water Waves
Slinky spring waves
Waves on Strings + Ropes
Electromagnetic Waves

Question 9

What is the term given to describe the distance between two consecutive crests or troughs of a wave?

Answer 9

Wave length

Question 10

What is the term given for the greatest displacement of the wave from its undisturbed position?

Answer 10

Amplitude

Question 11

What is the equation for wave speed?

Answer 11

Frequency x Wave Length

Question 12

What is frequency measured in?

Answer 12

Hz

Question 13

What are the three units that wavelength can be measured in?

Answer 13

Cm
M
Km

Question 14

What are the three units that speed is often measured in?

Answer 14

Cm/s
M/s
Km/s

Question 15

In a wave graph that shows displacement and time, what can you calculate and what is the formula?

Answer 15

Frequency
Formula is Numb Of Waves divided by total time

Question 16

In a wave graph that shows displacement and distance, what can you calculate and what is the formula?

Answer 16

Wave length
Formula is Distance divided by number of waves

Question 17

What do all waves transfer?

Answer 17

Energy

Question 18

In a wave, what does not move?

Answer 18

Matter

Question 19

What is another word that describes vibration?

Answer 19

Oscillation (oscillate)

Question 20

What are the three things electro-magnetic waves can do? (2 are Travel, 1 Is type)

Answer 20

Travel in a vacuum
Travel at the same speed in a vacuum
Are transverse waves

Question 21

What can electro-magnetic waves carry?

Answer 21

Energy

Question 22

What are the two things that can happen to electro-magnetic waves?

Answer 22

Reflected and Refracted

Question 23

What is the speed of a vacuum?

Answer 23

300 million m/s

Question 24

What is the audible sound range for humans in frequency?

Answer 24

20 Hz to 20,000 Hz

Question 25

What are the 7 types of Electromagnetic waves?

Answer 25

Gamma X-Ray Ultraviolet Visible Infrared Micro-Waves Radio Waves

Question 26

What side of the electromagnetic spectrum is most dangerous?

Answer 26

Gamma Side

Question 27

What is the rhyme used to remember types of electromagnetic waves?

Answer 27

Grannys Xbox Uses Volts In My Room

Question 28

What can Gamma rays damage and what does this lead to?

Answer 28

Damages Cells which leads to cancer

Question 29

What do X-Rays damage and what does this lead to?

Answer 29

Damages cells which leads to cancer

Question 30

What type of cells can ultraviolet light damage?

Answer 30

Skin Cells

Question 31

What organ can visible light cause damage to?

Answer 31

The Eyes

Question 32

Infrared light is felt as heat, what does this often cause?

Answer 32

Burns

Question 33

What do micro-waves cause heating of?

Answer 33

Internal heating of body tissues

Question 34

What can large doses of radio waves lead to?

Answer 34

Cancer

Question 35

What is reflected sound and ultrasound commonly called?

Answer 35

An echo

Question 36

In terms of the use of pregnancy, what can ultrasound be used to measure the diameter of?

Answer 36

A babies head

Question 37

What does the term SONAR stand for?

Answer 37

Sound Navigation And Ranging

Question 38

What are the 2 classifications (types) of waves?

Answer 38

Transverse and Longitudinal

Question 39

What is the typical wave length of a gamma ray? (nano-metre)

Answer 39

0.01 NM

Question 40

What is the typical wave length of x-rays? (NM)

Answer 40

0.1NM

Question 41

What is the typical wave length of ultraviolet light? (NM)

Answer 41

10NM

Question 42

What is the typical wave length of visible light? (NM)

Answer 42

500NM

Question 43

What is the typical wave length of infrared light? (MM)

Answer 43

0.01MM

Question 44

What is the typical wave length of micro-waves? (CM)

Answer 44

3cm

Question 45

In standard form, what is the length of a nano-metre? (nm)

Answer 45

1x10^-9

Question 46

What is meant by the term “ultrasound”?

Answer 46

A sound with a frequency greater than 20,000HZ