PLMAT 2 Flashcards
Law of interaction
every action there is an equal but opposite reaction.
Law of acceleration
acceleration of object is proportional to net force
Weight 🌎
gravitational attraction exerted by earth
Mass
amount of matter
Volume
measure of space 🌌
Momentum
product of mass and velocity.
p = m x v.
Distance
length between reference point and designated position
Displacement
length between initial and final position.
Velocity
how fast an object moves in a given time
Two types of motion
curvilinear motion ex: Uniformly accelerated motion, Projectile
Linear Motion ex: freefall
Uniformly accelerated motion 🏃💨
maintains constant acceleration 🏃💨
Projectile
only force acting is on gravity.
Circular motion ⭕
force exerted on object directed towards the center.
Motion
easy to recognize but hard to describe.
Rate
quantity per unit of time
The most important parts of the eye are the: EIPLR
a. eyelid - opens and shuts the eye
b. iris - regulates amount of light entering the eye
c. pupil - opens and closes to control intensity
d. lens - refracts light to form images
e. retina - a screen where image is formed 📱
Nearsighted
see near objects but has difficulty focusing on far.
Farsighted
see far objects clearly but difficulty focusing near objects.
Astigmatism
unevenness in the curvature of the lens
Telescope
view large objects at very far distances
Radioactivity
process of atomic transformation.
Radiation
released?
energy released during a nuclear reaction.
Ionizing radiation
—–
_______ ________
enough energy to separate molecules
(4) general types of chemical reaction: CDSD
Composition/ Synthesis Reaction
two/more elements combine to form one compound.
Decomposition / Analysis
one compound breaks into two/ more
Single displacement
reactants replaces one of elements
Double displacement
two compounds produce 2 new compounds
Scientific Method involves the following processes and skills:
IFDCOIMIS
- Identifying a problem
- Formulating a hypothesis
- Designing a procedure to test the hypothesis
- Collecting data and presenting them in appropriate format
- Observing trends and patterns
- Interpreting data gathered
- Making generalizations and conclusions
- Identifying limitations and making recommendations
- Scientific Method is a continuous process used to collect observations, form and test hypothesis, make predictions, and identify patterns in the physical world.
force is capable of 🏧
changing size and shape
SI unit of the force is Newton.
Forces types:
Contact forces
physical contact with one another.
Non- contact forces
not in physical contact with one another.
Friction
force that opposes motion
Gravitational force 👫
attraction between two objects in the universe.
Ecology
study of organisms and their environment.
Biotic factors
living component of ecosystem.
Abiotic factors
non-living components
Biosphere
parts of earth where life exists.
Habitat
where an organism lives.
ecosystem 🗣️
interacting with the abiotic parts
Nebula
all stars came from huge clouds of gas and dust
protostar is
very young star.
⭐⭐ Star is old when 📛
it reached the red giant phase
colloid
dispersion particles
Once in a blue moon:
happens very rarely
Beating around the bush:
avoiding main topic
Cry over spilt milk:
complaining about a loss from the past
Spill the beans:
tell a secret
Piece of cake:
easy to understand or do
Blessing in disguise
good and useful that did not initially seem that way
Taste of your own medicine
someone receives the same treatment, usually negative, that he/she gives to others
Apple of one’s eye: 🍎❤
cherished more than others
Feeling a bit under the weather
feeling slightly ill
Ball is in your court
it is up to you to make the next decision or step.
Hear it on grapevine:
hear rumors about something
Break the ice
initiate a social conversation or interaction
At the drop of a hat:🎩
willingness to do something
Afraid of one’s own shadow
easily frightened
on cloud nine
very happy
Give cold shoulder
ignore
Hit the nail on the head:
do the correct thing
Hit the bull’s eye:
to be exactly right about
The Solar System
planets revolve around the stars
Climate Change
blocking of solar radiation by pressure
Global Warming
natural/artificial fluctuations in global temperatures
Greenhouse Effect
Accumulation of heat because of absorption
big bang theory
expansion and explosion
🩸insulin 🩸
lower level of glucose in blood
