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pp poo poo > i want die > Flashcards

i want die Flashcards

to die

1
Q

Describe the relationship between force, mass, and acceleration

A

f=ma

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2
Q

Explain the relationship between distance, speed, and time

A

S=d/t

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3
Q

acceleration

A

A = m/s-2
A = v-u/t
acceleration = the final velocity minus the initial velocity over time

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4
Q

Define energy and identify the unit for energy

A

Energy is the ability to do work
Energy is measured in joules

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5
Q

LAW of cinservation of ebergy

A

The law of the conservation of energy is that energy can not be created nor destroyed, only transferred or transformed

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6
Q

what thing makes appliances not 100% efecant??

A

Through factors such as heat loss, resistance in wires and friction, appliances can not be 100% efficient

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7
Q

WHAT IS CONVECION

A

Convection: The transfer of heat through means of a fluid, when a region of fluid is heated it becomes less dense causing it to rise displacing the colder fluids this constant movement distributes the heat throughout the fluid

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8
Q

CONDUCION????

A

The transfer of heat through direct contact between particles. When a region of particles are heated they gain kinetic energy transferring it to neighboring particles through collisions. This causes heat to spread throughout the substances

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9
Q

identify situations where waves transfer energy

A

Sound waves in air
Ocean waves on water
Light waves from the Sun

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10
Q

Wavelength

A

the distance between successive crests of a wave

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11
Q

Frequency and what is it measured in??

A

number of waves passing a fixed point in a given amount of time
Measured in units call hertz

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12
Q

Amplitude

A

distance from the max disturbance to the undisturbed position (max to mid)

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13
Q

Difference between frequency and period

A

frequency is how often the wave happens while period is the time it takes to happen

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14
Q

Explain, using the particle model, the transmission of sound in different mediums

A

Sound travels through mediums in longitudinal waves, waves of compressions and rarefactions

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15
Q

how do we use waves in our lives

A

Radio Waves: Used in radio, TV, Wi-Fi, Bluetooth.
Microwaves: Cooking, satellite communication, radar.
Infrared Radiation: Remote controls, thermal imaging.

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16
Q

Describe the occurrence and some applications of absorption, reflection and refraction in everyday situations

A

Absorption: solar panels
Refection: mirrors
Refraction: glasses

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17
Q

Scalar:

A

A quantity that has magnitude (size), but no direction.
Examples include: Distance, Mass, Speed

18
Q

Vector:

A

A quantity that has both magnitude and direction
Examples include: Acceleration, Displacement, Velocity, Force

19
Q

NEWTON 1st

A

An object at rest remains at rest, or if in motion, remains in motion at a constant velocity unless acted on by a net external force.

20
Q

NEWTON 2st

A

the acceleration of an object is directly related to the net force and inversely related to its mass.(F=mA)

21
Q

NEWTON 3????

A

For every action, there is an equal and opposite reaction.

22
Q

Period

A

: time for one complete cycle (UP AND DOWN)

23
Q

define wave

A

a disturbance in a medium that carries energy without a net movement of particles.

24
Q

what happens if the disturbance takes place perpendicular to the propagation?

A

ITS A TRANSVRESE WAVE

25
Q

what happens if the disturbance takes place along the direction to the propagation?

A

ITS A LONGITUDINAL WAVE

26
Q

what are transverse and longitudinal waves?

A

mechanical waves

27
Q

name all the electromagnetic waves

A

radio, mircowave, infared, vissible, ultraviolet, xray, gamma
“Real Monkeys Insist Very Useful X-mas Gifts”

28
Q

waves that cannot travel through a vacuum

A

SOUND WAVES

29
Q

name the parts of a transveral wave

A

wavelength, period, amplitude, crest, trough, undistubed position,

30
Q

name the parts of a longituninal wave

A

wavelenght, amplitude, compression and rarefaction

31
Q

what is refraction

A

the change in dicretion of a wave through one meduim to another caused by a change in speed

32
Q

what is the point of incidence

A

the point where the incident ray strikes the surface

33
Q

what is the normal?

A

a perpendicual line that is drawn from the point of incidence

34
Q

what is the angle of incidince

A

The angle formed between the normal and the incident ray. at the point of incidence

35
Q

what is the color bit of the eye called

A

IRIS

36
Q

and the bakc bit of the front of the eye???

A

LENS

37
Q

WHTAS THE EARS THIJG GONNA B

A

EAR DRUM

38
Q

WHITE BIT OF THE EYE

A

SCELRA

39
Q

BAK OF EYE (CONES AND SHIT)

A

RETINA

40
Q

COVER BIT OR EYE

A

CORNEA

41
Q

TUBE BIT OF EAR

A

EAR CANNAL

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