Enhanced Physics Flashcards
Any source or object which emits its own light is a —
Source of light
Any object that gives off light of its own
Luminous light
eg. sun, stars
An object that doesn’t emit light of its own or reflect light
Non-luminous light
eg. a book
There are two types of sources of light
Natural and artificial sources of light
It is emitting light because it is heated or is heated because its emitting light, these are called —–
Incandescent
eg. sun, torch
these are living things that emit light without getting hot
bioluminescent
eg. fireflies, bioluminescent algae
define non-incandescent.
These are light sources that are not incandescent or it gives off light without heating up.
eg. flourescent tubes and glow-in-the-dark objects
These cannot emit their own light but reflects light from other luminous objects.
reflections/reflectable/reflections of light
eg. discoball, the moon
what are the four fundamental forces of nature?
gravity, electromagnetism, strong and weak nuclear
Types of interactions
what are the two types of interactions?
Contact and non-contact interaction
types of interaction
give examples of contact forces
frictional force, tension force, normal force, air resistance force, applied force, and spring force
types of interactions
give exampels of non-contact forces
gravitational force, electromagnetic force, and gravitational force
Newton’s laws
“an object in motion will remain in motion, and an object at rest will remain at rest, unless acted upon a force” which law is this?
Law #1. Inertia
Newton’s laws
The net force is the vector sum of all the forces that act upon an object. which law is this?
law #2
Newton’s law
when all forces are balanced out, it becomes….
an equilibrium
Newton’s laws
“For every action, there’s an equal but opposite reaction”
Law #3
If you excert force on an object, it exerts an equal force back at you
These waves are a form of vibration, also known as transverse waves.
Electromagnetic waves
Both the electric field and the magnetic wave in the electromagnetic waves oscillate (blank) to each other.
Perpendicular
EM waves
what are the seven EM waves in order?
Radiowaves, Microwaves, Infrared, visible light, ultraviolet, X-rays, and gamma rays
EM waves
All EM waves travel ata a speed of——
3 x 10^8 m/s
EM waves
“as wavelength decreases, the frequency of the wave increases” as expressed in the equation—-
speed of light = wavelength x frequency
EM waves
(blank) is the number of waves that pass a certain point in a specified amount of time.
v (speed of light)
One wave per second = hertz
EM waves
defined as the distance mesured from one crest of a wave to another
Wavelength
EM waves
Has the longest wavelength
Radiowaves
EM waves
used to trasmit data such as AM and FM radio broadcasting, TV broadcasting, and satellite communication.
Radiowaves
EM waves
Frequency is inversly proportional to the wavelength, slay or nayh?
Slay
EM waves
used to cook food, radar, satellite, and cell phone communication
Microwaves
Em waves
Classified as “near” and “far”.
Infrared
EM waves
Waves in the EM spectrum that humans can see, violet has the highest frequency, red has the lowest.
Visible light
Em waves
They are germicidal, and are used to detect forged bank notes.
Ultraviolet
Em waves
This is discovered by Wilhem Roentgen, and can penetrate soft tissues like skin and muscles
X-rays
Em waves
Has the shortest waves but has the most energy, sometiems used in treating cancer and in taking detailed images for diagnostic medicine.
gamma rays
Em waves
This device sends out short bursts of microwaves.
Radar
Em waves
This scientist founded teh science of electromagnetic waves
Andrie Marie Ampere (1775-1836)
Em waves
This scientist formualted the electromagnetic induction
Michael Faraday
(1791-1867)
Em waves
They confirmed the existence of EM waves (frequency & wavelength)
Heinrich Hetz
(1857-1894)
Em waves
They discovered the microwaves, the Em waves nature of light, and “Maxwell’s Equation”.
James Clerk Maxwell
(1831-1879)
Em waves
They discovered that a current -carrying conductor produces a magnetic field
Hans Christian Oersted
(1777-1851)
Kineic and potential energy
It is a kind of energy of an object that posesses dues to its motion.
Kinetic energy
it should have speed and mass
Kinetic and potential energy
The faster an object, the more kinetic energy it has.
Speed
Kinetic and potential energy
The more (Blank) it has, the more kinetic energy there will be.
Mass.
It is the energy that is stored in an object due to its position or current condition.
Potential energy
Optics
It is the change in direction of a wavefront at an interface.
Reflection
optics
It is the change in direction of light ray as it passes from one medium to another.
Angle of refraction
optics
It is the angle between a ray incident on a surface and the line perpendicular to the surface called the normal.
Angle of incident
optics
it refracts parallel rays of light inwards to a single point.
Convex lens
ALso called as converging lens
optics
It refracts parallel ways of light outwards .
Concave lens
optics
the length between the focal point to the lens
focal length
optics
this forms if lightways come together in a certain point to form an image.
Real image
optics
This is formed when the light rays don’t come together where the image appears to be.
Virtual image
optics
This lens is real, inverted, and makes images smaller
Convex lens
optics
This lens is virtual, upright and images appear to be small
Concave lens
Physical quantities that only has a magnitude but no direction
Scalar quantities
Physical quantities with both a magnitude and a direction
Vector quntities
