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Physics > Section 4 Properties Of Waves > Flashcards

Section 4 Properties Of Waves Flashcards

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1
Q

Direction of waves travels in

A

Direction of propagation

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2
Q

What is amplitude

A

Maximum displacement of a point on the wave from its undistributed position

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3
Q

Wavelength

A

The distance between the same point on two adjacent waves

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4
Q

Frequency

A

The number of complete waves passing a certain point

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5
Q

Transverse waves

A

The vibrations are perpendicular to the direction in which the wave is propagated

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6
Q

Longitudinal waves

A

The vibrations are parallel to the direction in which the wave is propagated

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7
Q

Wave speed

A

The speed at which energy is transferred

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8
Q

Wave speed equation

A

Wave length/frequency

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9
Q

The law of reflection

A

Angle of incidence = angle of reflection

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10
Q

What is reflection used for

A

To form optical images

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11
Q

What do mirrors do

A

Virtual images

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12
Q

Refraction

A

Waves changing Direction at a boundary

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13
Q

How to find refractive index

A

N = sin I/sin r

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14
Q

When does internal reflection occur

A

When a wave tries to leave a material

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15
Q

What is total internal reflection

A

When no light leaves a material

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16
Q

What is critical angle

A

Angle of incidence on a boundary that will Cause the angle of refraction to be 90*

17
Q

Critical and formula

A

1/sin c

18
Q

Diffraction meaning

A

Waves spreading out

19
Q

Describe how a water wave in a ripple tank behaves as it passes the edge of an obstacle

A

The water waves spread out as they bend around the edge of the obstacle

20
Q

Which type of electromagnetic wave has the longest wave length

A

Radio

21
Q

What type of em radiation is used to cook food in electric grills

A

Infrared radiation

22
Q

Which wave property determines how loud a sound is

A

Amplitude

23
Q

How do like charges act

A

Repel and unlike charges attract

24
Q

What type of objects have electrical fields

A

Electrons

25
Q

Example of electrical conductor

A

Copper

26
Q

What is an electron

A

A force that acts on a electron

Physics (8 decks)

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