Science and Technology

Question 1

thing being observed by senses

Answer 1

phenomenon

Question 2

scientifically tested observation

Answer 2

fact

Question 3

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

Answer 3

controlled experiment

Question 4

factors that are changed

Answer 4

Independent or experimental

Question 5

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

Answer 5

dependent

Question 6

• keen observation of things and events in the surroundings

Answer 6

curiosity

Question 7

use of step-by-step experimental method and keeping of accurate records

Answer 7

logic and system

Question 8

• readiness or willingness to change or modify ideas or principles when necessary

Answer 8

Open- mindedness

Question 9

acknowledge contribution of others to one’s success

Answer 9

Intellectually honest

Question 10

using hard evidences to prove ones theory

Answer 10

not opinionated

Question 11

application of scientific knowledge to practical purposes; applied science

Answer 11

technology

Question 12

• include tools, gadgets or devices that help us do our activities faster and better

Answer 12

machines

Question 13

materials produced or made through artificial or natural means

Answer 13

products

Question 14

rigid body pivoted about a point called fulcrum (e.g. crowbar, hammer, pliers, tongs)

Answer 14

lever

Question 15

wheel with a grooved rim over which a rope passes

Answer 15

pulley

Question 16

consists of a wheel attached to an axle so that if you push on the wheel, the axle turns also (e.g. doorknob)

Answer 16

wheel and axle

Question 17

flat surface with one and higher than the other

Answer 17

inclined plane

Question 18

an inclined plane with either one or two sloping sides

Answer 18

wedge

Question 19

spiral inclined planes

Answer 19

srew

Question 20

make use of more simple machines

Answer 20

compound machine

Question 21

ability to do work or ability to exert force on an object and make it move

Answer 21

energy

Question 22

energy possessed by an object or a body in motion

Answer 22

kinetic energy

Question 23

energy possessed by a body because of its position or state

Answer 23

potential energy

Question 24

total energy coming from the attractive and repulsive forces of all particles or molecules in a body

Answer 24

internal or thermal energy

Question 25

energy flows from one body to another due to temperature differences, the flow is always from hotter to cold

Answer 25

heat energy

Question 26

the energy of electrons flowing through conductors

Answer 26

electrical energy

Question 27

stored in matter due to forces of attraction and to the arrangement of subatomic particles in atoms

Answer 27

chemical energy

Question 28

energy of electromagnetic waves, radio waves, infrared rays, visible light, ultraviolet rays, xrays, gamma rays

Answer 28

radiant energy

Question 29

released from nuclear fusion or fission of atomic nuclei of heavy element of light element

Answer 29

nuclear energy

Question 30

one part of material is heated, the molecules in that part move faster and collide with other molecules

Answer 30

conduction

Question 31

material through which heat passes easily

Answer 31

conductor

Question 32

material conducts heat poorly

Answer 32

insulator

Question 33

movement of gas or liquid brought about by temperature differences creates convection current

Answer 33

convection

Question 34

heat transfer when heat is given in all directions around them

Answer 34

radiation

Question 35

mined formed from trees and other vegetation buried in swamps

Answer 35

coal

Question 36

liquid mixture gaseous liquid and solid hydrocarbons

Answer 36

petroleum

Question 37

composed of hydrogen and carbon. 50-94% of methane and other hydrocarbons

Answer 37

natural gas

Question 38

production of electricity by means of generators driven by water turbines

Answer 38

hydroelectric power