PLMAT 2

Question 1

Law of interaction

Answer 1

every action there is an equal but opposite reaction.

Question 2

Law of acceleration

Answer 2

acceleration of object is proportional to net force

Question 3

Weight 🌎

Answer 3

gravitational attraction exerted by earth

Question 4

Mass

Answer 4

amount of matter

Question 5

Volume

Answer 5

measure of space 🌌

Question 6

Momentum

Answer 6

product of mass and velocity.
p = m x v.



Question 7

Distance

Answer 7

length between reference point and designated position

Question 8

Displacement

Answer 8

length between initial and final position.

Question 9

Velocity

Answer 9

how fast an object moves in a given time

Question 10

Two types of motion

Answer 10

curvilinear motion ex: Uniformly accelerated motion, Projectile

Linear Motion ex: freefall

Question 11

Uniformly accelerated motion 🏃💨

Answer 11

maintains constant acceleration 🏃💨

Question 12

Projectile

Answer 12

only force acting is on gravity.

Question 13

Circular motion ⭕

Answer 13

force exerted on object directed towards the center.

Question 14

Motion

Answer 14

easy to recognize but hard to describe.

Question 15

Rate

Answer 15

quantity per unit of time

Question 16

The most important parts of the eye are the: EIPLR

Answer 16

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 📱

Question 17

Nearsighted

Answer 17

see near objects but has difficulty focusing on far.

Question 18

Farsighted

Answer 18

see far objects clearly but difficulty focusing near objects.

Question 19

Astigmatism

Answer 19

unevenness in the curvature of the lens

Question 20

Telescope

Answer 20

view large objects at very far distances

Question 21

Radioactivity

Answer 21

process of atomic transformation.

Question 22

Radiation

released?

Answer 22

energy released during a nuclear reaction.

Question 23

Ionizing radiation
—–
_______ ________

Answer 23

enough energy to separate molecules

Question 24

(4) general types of chemical reaction: CDSD

Answer 24

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

Question 25

Scientific Method involves the following processes and skills: IFDCOIMIS

Answer 25

1. Identifying a problem 2. Formulating a hypothesis 3. Designing a procedure to test the hypothesis 4. Collecting data and presenting them in appropriate format 5. Observing trends and patterns 6. Interpreting data gathered 7. Making generalizations and conclusions 8. Identifying limitations and making recommendations 9. Scientific Method is a continuous process used to collect observations, form and test hypothesis, make predictions, and identify patterns in the physical world.

Question 26

force is capable of 🏧

Answer 26

changing size and shape SI unit of the force is Newton.

Question 27

Forces types:

Answer 27

Contact forces physical contact with one another. Non- contact forces not in physical contact with one another.

Question 28

Friction

Answer 28

force that opposes motion

Question 29

Gravitational force 👫

Answer 29

attraction between two objects in the universe.

Question 30

Ecology

Answer 30

study of organisms and their environment.

Question 31

Biotic factors

Answer 31

living component of ecosystem.

Question 32

Abiotic factors

Answer 32

non-living components

Question 33

Biosphere

Answer 33

parts of earth where life exists.

Question 34

Habitat

Answer 34

where an organism lives.

Question 35

ecosystem 🗣️

Answer 35

interacting with the abiotic parts 

Question 36

Nebula

Answer 36

all stars came from huge clouds of gas and dust

Question 37

protostar is

Answer 37

very young star.

Question 38

⭐⭐ Star is old when 📛

Answer 38

it reached the red giant phase

Question 39

colloid

Answer 39

dispersion particles

Question 40

Once in a blue moon:

Answer 40

happens very rarely

Question 41

Beating around the bush:

Answer 41

avoiding main topic

Question 42

Cry over spilt milk:

Answer 42

complaining about a loss from the past

Question 43

Spill the beans:

Answer 43

tell a secret

Question 44

Piece of cake:

Answer 44

easy to understand or do

Question 45

Blessing in disguise

Answer 45

good and useful that did not initially seem that way

Question 46

Taste of your own medicine

Answer 46

someone receives the same treatment, usually negative, that he/she gives to others

Question 47

Apple of one's eye: 🍎❤

Answer 47

cherished more than others

Question 48

Feeling a bit under the weather

Answer 48

feeling slightly ill

Question 49

Ball is in your court

Answer 49

it is up to you to make the next decision or step.

Question 50

Hear it on grapevine:

Answer 50

hear rumors about something

Question 51

Break the ice

Answer 51

initiate a social conversation or interaction

Question 52

At the drop of a hat:🎩

Answer 52

willingness to do something

Question 53

Afraid of one's own shadow

Answer 53

easily frightened

Question 54

on cloud nine

Answer 54

very happy

Question 55

Give cold shoulder

Answer 55

ignore

Question 56

Hit the nail on the head:

Answer 56

do the correct thing

Question 57

Hit the bull's eye:

Answer 57

to be exactly right about 

Question 58

The Solar System

Answer 58

planets revolve around the stars 

Question 59

Climate Change

Answer 59

blocking of solar radiation by pressure

Question 60

Global Warming

Answer 60

natural/artificial fluctuations in global temperatures

Question 61

Greenhouse Effect

Answer 61

Accumulation of heat because of absorption

Question 62

big bang theory

Answer 62

expansion and explosion

Question 63

🩸insulin 🩸

Answer 63

lower level of glucose in blood