General Science

Question 1

systematic study that is concerned with facts, principles, and methods that could be observed in our natural or physical and social environment

Answer 1

science

Question 2

as the application of scientific knowledge to improve life or satisfy needs

Answer 2

technology

Question 3

3 kinds of applied science

Answer 3

machines, products & processes

Question 4

involves using a narrow intense beam of light as scalpel in removing unhealthy cells

Answer 4

laser surgery

Question 5

hazards or negative effects that lead to loss or injury

Answer 5

risks

Question 6

logical method used by scientists to acquire knowledge that is used to explain different phenomena in nature

Answer 6

scientific method

Question 7

a thing observed by the senses? scientifically tested observation?

Answer 7

phenomenon - fact

Question 8

manipulating one of the conditions or factors that may affect the result of the experiment

Answer 8

controlled experiment

Question 9

the factors that are kept constant throughout the experiment

Answer 9

controls

Question 10

the factors that change during the experiment

Answer 10

variables

Question 11

factors that are changed

Answer 11

independent or experimental

Question 12

factors that change as a result of changes in the independent variable

Answer 12

dependent

Question 13

a statement about the result of the experiment

Answer 13

conclusion

Question 14

a statement which describes what happens but does not explain the cause of the occurrence

Answer 14

law

Question 15

hypothesis that can be explained from observations

Answer 15

theory

Question 16

scientific attitudes

Answer 16

Curiosity, Logic and System, Open-mindedness, Intellectual Honesty, Hard work and perseverance, Objectivity, Creativity and Critical Thinking

Question 17

the process of comparing a quantity with a chosen standard

Answer 17

measurement

Question 18

the system of units that scientists have agreed upon and is legally enforced in almost all parts of the world

Answer 18

international system (SI)

Question 19

Length in SI UNIT

Answer 19

Meters in Basic Quantity

Question 20

Mass in SI UNIT

Answer 20

Kilograms in Basic Quantity

Question 21

Time in SI UNIT

Answer 21

Seconds in Basic Quantity

Question 22

Electric Current in SI UNIT

Answer 22

Amperes in Basic Quantity

Question 23

Temperature in SI UNIT

Answer 23

Kelvin in Basic Quantity

Question 24

Amount of Substance in SI UNIT

Answer 24

Moles in Basic Quantity

Question 25

Luminous Intensity in SI UNIT

Answer 25

Candelas in Basic Quantity

Question 26

2 factors that affect the degree of accuracy of measurements

Answer 26

accuracy and precision

Question 27

defined as anything that occupies space and possesses the attributes of gravity and inertia

Answer 27

matter

Question 28

characterized by resistance to any change in shape, caused by a strong attraction between the molecules of which it is composed

Answer 28

solid

Question 29

does not resist forces that act to change its shape, because the molecules are free to move with respect to each other

Answer 29

liquid

Question 30

state of matter in which molecules are widely dispersed and freely move; it offers no resistance to change of shape and little resistance to change in volume; a gas that is not confined tends to diffuse infinitely, increasing in volume and diminishing its density

Answer 30

gas

Question 31

the fourth state of matter consisting of an overall charge-neutral mix of electrons, ions and neutral atoms

Answer 31

plasma

Question 32

the temperature at which any given substance changes from solid to liquid and vice versa

Answer 32

melting point/freezing point

Question 33

the temperature at which it changes from liquid to gas and vice versa; also defined as the temperature at which the vapor pressure of a liquid equals the external pressure surrounding the liquid

Answer 33

boiling point

Question 34

a change in matter that involves no chemical reaction; the composition of its molecules remains unchanged, and the substance does not lose its chemical identity; include any alteration in the shape and size of a substance

Answer 34

physical change

Question 35

3 types of physical change

Answer 35

melting, evaporating and freezing

Question 36

the change from a solid to a gas

Answer 36

sublimation

Question 37

the chemical composition of each molecule changes; the properties of the original substance are now lost and new substances with new properties are produced

Answer 37

chemical change

Question 38

(a) multiply force (b) multiply speed or distance (c) change the direction of the force (d) transfer energy from one place to another (e) transform energy from one form to another

Answer 38

machines

Question 39

mechanical devices that only have one or two parts each

Answer 39

simple machines

Question 40

mechanical devices that make use of two or more simple machines

Answer 40

compound/complex machines

Question 41

scientists have classified simple machines into six groups

Answer 41

inclined plane, lever, screw, wheel and axle, pulley, and wedge

Question 42

a substance is equal to the mass of the material divided by its volume

Answer 42

density

Question 43

long-term effect of the sun's radiation on the rotating earth's varied surface and atmosphere; weather averaged over a long period of time

Answer 43

climate

Question 44

a state of the atmosphere at a particular time and place

Answer 44

weather

Question 45

measure of the degree of hotness of the air

Answer 45

temperature

Question 46

3 different scales used for measuring temperature - the most common instrument

Answer 46

kelvin (absolute) scale, celsius (centigrade) scale and fahrenheit scale - thermometer

Question 47

a measure on the amount of water vapor in the air

Answer 47

humidity

Question 48

instruments used in measuring atmospheric humidity - most common measure of humidity

Answer 48

hygrometer and psychrometer - relative humidity

Question 49

produced when the droplets and crystals in clouds grow large enough to fall to the ground - measured using an instrument called?

Answer 49

precipitation - rain gauge

Question 50

horizontal movement of air

Answer 50

wind

Question 51

the instrument used to determine wind direction - and wind speed

Answer 51

wind vanes - anenometers

Question 52

excess water vapor in the air that condenses into liquid droplets or ice crystals

Answer 52

clouds

Question 53

form from rising masses of air, called thermals; often has a flat base, corresponding to the level at which the water vapor first condenses

Answer 53

fluffy cumulus clouds

Question 54

if a cumulus cloud grows large, it transforms into a?

Answer 54

cumulonimbus

Question 55

consist of trails of falling ice crystals twisted by the winds; usually form high in the troposphere, and their crystals never reach the ground

Answer 55

fibrous cirrus clouds

Question 56

form when an entire layer of air cools or ascends obliquely; often extends for hundreds of miles

Answer 56

stratus clouds

Question 57

the force of air on a given surface divided by the area of that surface

Answer 57

pressure

Question 58

most common instrument used to measure air pressure

Answer 58

barometer

Question 59

only substance known to exist in a natural state as a solid, liquid, or gas on the surface of the earth, a universal solvent

Answer 59

water

Question 60

the series of movements of water above, on and below the surface of the earth.

Answer 60

hydrologic cycle or water cycle

Question 61

four distinct stages of the water cycle

Answer 61

storage, evaporation, precipitation, and runoff

Question 62

the 6 basic steps of scientific method

Answer 62

A. Identify and clearly state the problem B. Gather information pertinent to the problem C. Formulate hypothesis D. Test the hypothesis E. Draw a generalization or conclusion F. Apply the principle (conclusion) to other situations