Physics Flashcards

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1
Q

LIGHT

A

Light is a form of energy that travels in a specialised wave known as electromagnetic waves.

2
Q

THE LAW OF REFLECTION

A

angle of incidence = angle of reflection

i = r

3
Q

PROPERTIES OF AN IMAGE PRODUCED BY A PLANE MIRROR

A
• Upright
• Same size and the object
• Laterally inverted
• Virtual - light rays do not meet to produce it
• Appears to be as far inside the mirror as the object is in front
4
Q

REFRACTION is when…

A

…Light passes at an angle from one medium to another, and changes direction.

5
Q

REFRACTION is caused by…

A

…Light travelling at different speeds through different substances.

6
Q

LIGHT BENDS ______ THE NORMAL WHEN ENTERING A A SUBSTANCE WITH A HIGHER REFRACTIVE INDEX

A

Towards

HollywoodLosAngeles

7
Q

LIGHT BENDS ______ THE NORMAL WHEN ENTERING A A SUBSTANCE WITH A LOWER REFRACTIVE INDEX

A

Away

8
Q

FREQUENCY

A

The number of waves produced each second

Measured in Hertz - Hz

9
Q

THE WAVE EQUATION

A

v = fλ

10
Q

LIGHT THAT BENDS THE LEAST AND THE MOST THROUGH A PRISM

A

Least - Red

Most - Violet

11
Q

THE SMALLER WAVELENGTH (HIGHER FREQUENCY) THE MORE LIGHT SLOWS DOWN/SPEEDS UP?

A

Slows down

12
Q

EXECTROMAGNETISM IS THE INTERACTION THE OCCURS BETWEEN ____ + ____ FEILDS?

A

Magnetic and electric

13
Q

Electromagnetic waves travel as two interconnected electric and magnetic fields moving as transverse waves at right angles to each other

A

(Kind of just a fact)

14
Q

SPEED OF LIGHT

A

3.0 x 10(to the power of 8)m/s

15
Q

WHAT HAS THE SHORTEST WAVELENGTH, HIGHER FREQUENCY, AND HIGHER ENERGY?

A

Gamma rays

16
Q

WHAT HAS THE LONGEST WAVELENGTH, LOWER FREQUENCY, AND LOWER ENERGY?

A