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Physics Paper 2 > Waves > Flashcards

Waves Flashcards

1
Q

Define amplitude

A

Amoun to energy carried by a wave

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2
Q

Define frequency

A

Number of complete waves passing a fixed point per second

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3
Q

Whats the equation for wave speed?

A

Wave speed = frequency x wavelengtg

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4
Q

Define a longitudinal wave.

A

Vibratik s that are parallel to the direction the energy travels

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5
Q

Define a transverse wave.

A

Vibrations are perpendicular to the direction energy travels

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6
Q

What frequency is ultrasound?

A

20MHz - above human hearing

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7
Q

What frequencies can humans hear?

A

20 - 20,000 Hz

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8
Q

How does ultrasound work?

A

The waves hit a boundary and are partially reflected - measure the length of time it takes them to return - use this to create an image

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9
Q

What is the ray entering the block called?

A

Incident ray

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10
Q

What is the ray on the block called

A

Refracted ray

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11
Q

What is the ray leaving the block called?

A

Emergent ray

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12
Q

What is the angle of incidence equal to?

A

The angle of refraction

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13
Q

What are the two angles in the refraction experiment?

A

Angle of incidence and angle if refraction

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14
Q

What does P wave stand for?

A

Primary

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15
Q

What does S wave stand for?

A

Secondary

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16
Q

Which wave is transverse

A

S waves

17
Q

Which wave is longitudinal

A

P waves

18
Q

Which wave can only travel through solids?

A

S waves

19
Q

Which wave can travel through solids and liquids?

A

P waves

20
Q

What is a Ray about to it a mirror called?

A

Incident ray

21
Q

What is a Ray reflected from a mirror called?

A

Reflected ray

22
Q

What angle is the normal at to the mirror?

A

90 degrees

23
Q

What is the shortest wavelength colour

A

Violet

24
Q

What colour has the longest wavelength?

A

Red

25
Q

Which waves are used to communicate with satellites?

A

Microwaves

26
Q

Which EM wave has the highest frequency?

A

Gamma rays

27
Q

Which EM wave has the shortest wavelength?

A

Radio waves

28
Q

Which surface is the best absorber?

A

Matt black

29
Q

What surface is the best at reflecting?

A

shiny silver

30
Q

What is the best surface at emmiting?

A

Matt Black?

Physics Paper 2 (2 decks)

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