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STEM basic topics for Entrance Exam > Enhanced Physics > Flashcards

Enhanced Physics Flashcards

1
Q

Any source or object which emits its own light is a —

A

Source of light

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2
Q

Any object that gives off light of its own

A

Luminous light

eg. sun, stars

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3
Q

An object that doesn’t emit light of its own or reflect light

A

Non-luminous light

eg. a book

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4
Q

There are two types of sources of light

A

Natural and artificial sources of light

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5
Q

It is emitting light because it is heated or is heated because its emitting light, these are called —–

A

Incandescent

eg. sun, torch

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6
Q

these are living things that emit light without getting hot

A

bioluminescent

eg. fireflies, bioluminescent algae

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7
Q

define non-incandescent.

A

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

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8
Q

These cannot emit their own light but reflects light from other luminous objects.

A

reflections/reflectable/reflections of light

eg. discoball, the moon

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9
Q

what are the four fundamental forces of nature?

A

gravity, electromagnetism, strong and weak nuclear

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10
Q

Types of interactions

what are the two types of interactions?

A

Contact and non-contact interaction

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11
Q

types of interaction

give examples of contact forces

A

frictional force, tension force, normal force, air resistance force, applied force, and spring force

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12
Q

types of interactions

give exampels of non-contact forces

A

gravitational force, electromagnetic force, and gravitational force

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13
Q

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?

A

Law #1. Inertia

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14
Q

Newton’s laws

The net force is the vector sum of all the forces that act upon an object. which law is this?

A

law #2

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15
Q

Newton’s law

when all forces are balanced out, it becomes….

A

an equilibrium

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16
Q

Newton’s laws

“For every action, there’s an equal but opposite reaction”

A

Law #3

If you excert force on an object, it exerts an equal force back at you

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17
Q

These waves are a form of vibration, also known as transverse waves.

A

Electromagnetic waves

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18
Q

Both the electric field and the magnetic wave in the electromagnetic waves oscillate (blank) to each other.

A

Perpendicular

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19
Q

EM waves

what are the seven EM waves in order?

A

Radiowaves, Microwaves, Infrared, visible light, ultraviolet, X-rays, and gamma rays

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20
Q

EM waves

All EM waves travel ata a speed of——

A

3 x 10^8 m/s

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21
Q

EM waves

“as wavelength decreases, the frequency of the wave increases” as expressed in the equation—-

A

speed of light = wavelength x frequency

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22
Q

EM waves

(blank) is the number of waves that pass a certain point in a specified amount of time.

A

v (speed of light)

One wave per second = hertz

23
Q

EM waves

defined as the distance mesured from one crest of a wave to another

A

Wavelength

24
Q

EM waves

Has the longest wavelength

A

Radiowaves

25
Q

EM waves

used to trasmit data such as AM and FM radio broadcasting, TV broadcasting, and satellite communication.

A

Radiowaves

26
Q

EM waves

Frequency is inversly proportional to the wavelength, slay or nayh?

A

Slay

27
Q

EM waves

used to cook food, radar, satellite, and cell phone communication

A

Microwaves

28
Q

Em waves

Classified as “near” and “far”.

A

Infrared

29
Q

EM waves

Waves in the EM spectrum that humans can see, violet has the highest frequency, red has the lowest.

A

Visible light

30
Q

Em waves

They are germicidal, and are used to detect forged bank notes.

A

Ultraviolet

31
Q

Em waves

This is discovered by Wilhem Roentgen, and can penetrate soft tissues like skin and muscles

A

X-rays

32
Q

Em waves

Has the shortest waves but has the most energy, sometiems used in treating cancer and in taking detailed images for diagnostic medicine.

A

gamma rays

33
Q

Em waves

This device sends out short bursts of microwaves.

A

Radar

34
Q

Em waves

This scientist founded teh science of electromagnetic waves

A

Andrie Marie Ampere (1775-1836)

35
Q

Em waves

This scientist formualted the electromagnetic induction

A

Michael Faraday

(1791-1867)

36
Q

Em waves

They confirmed the existence of EM waves (frequency & wavelength)

A

Heinrich Hetz

(1857-1894)

37
Q

Em waves

They discovered the microwaves, the Em waves nature of light, and “Maxwell’s Equation”.

A

James Clerk Maxwell

(1831-1879)

38
Q

Em waves

They discovered that a current -carrying conductor produces a magnetic field

A

Hans Christian Oersted

(1777-1851)

39
Q

Kineic and potential energy

It is a kind of energy of an object that posesses dues to its motion.

A

Kinetic energy

it should have speed and mass

40
Q

Kinetic and potential energy

The faster an object, the more kinetic energy it has.

A

Speed

41
Q

Kinetic and potential energy

The more (Blank) it has, the more kinetic energy there will be.

A

Mass.

42
Q

It is the energy that is stored in an object due to its position or current condition.

A

Potential energy

43
Q

Optics

It is the change in direction of a wavefront at an interface.

A

Reflection

44
Q

optics

It is the change in direction of light ray as it passes from one medium to another.

A

Angle of refraction

45
Q

optics

It is the angle between a ray incident on a surface and the line perpendicular to the surface called the normal.

A

Angle of incident

46
Q

optics

it refracts parallel rays of light inwards to a single point.

A

Convex lens

ALso called as converging lens

47
Q

optics

It refracts parallel ways of light outwards .

A

Concave lens

48
Q

optics

the length between the focal point to the lens

A

focal length

49
Q

optics

this forms if lightways come together in a certain point to form an image.

A

Real image

50
Q

optics

This is formed when the light rays don’t come together where the image appears to be.

A

Virtual image

51
Q

optics

This lens is real, inverted, and makes images smaller

A

Convex lens

52
Q

optics

This lens is virtual, upright and images appear to be small

A

Concave lens

53
Q

Physical quantities that only has a magnitude but no direction

A

Scalar quantities

54
Q

Physical quantities with both a magnitude and a direction

A

Vector quntities

STEM basic topics for Entrance Exam (7 decks)

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