Science CHAPTER 2

force

defined as a push or a pull

parallel force

counterbalancing of forces in opposite direction

torque

can also cause rotation

equilibrium

state of motion that does not move

center of gravity

all of the weight of the object seems to be concentrated 

geometric center

center of gravity of a regular shaped object

stability

ability of an object to maintain its position

plumb line method

irregular shaped object, the center of gravity can be located using the…

STABILITY OF AN OBJECT

James Clerk Maxwell

formulated the electromagnetic theory

electromagnetic theory

closer relationship between electromagnetism and light

Heinrich Hertz

Verified the predictions of Maxwell

electromagnetic waves

radiations in form of heat

Radio waves

waves that are invisible to the naked eye

long radio waves

transmitted as ground waves

sky waves

medium and short radio waves are normally transmitted as…

space waves

radio waves travel as…

microwaves

generated by electronic devices

infrared waves

resulting in a rise of temperature

X-ray

accelerating high-energy electrons

Gamma rays

highest energy in electromagnetic spectrum