SCIENCE FORM 2 CH 7 ELECTRICITY AND MAGNETISM Flashcards | Quizlet

SI unit for energy

joule

9 forms of energy

sound, kinetic, electrical, gravitational potential, elastic potential, light, nuclear, heat, chemical

8 sources of energy

water, geothermal, sun, wind, wave, radioactive substance, fossil fuel, biomass

Why does an electrostatic charge happen?

as a result of the transfer of electric charges between our body and an item that has static electric charges

Positive charges are called

proton

Negative charges are called

electron

State of an object when number of protons is more than electrons

positively charged

State of an object when number of electrons is more than protons

negatively charged

State of an object when number of protons and electrons are equal

neutral

An electroscope device is used to

detect the existence of electric charges on an object

Examples of electrostatic in our daily life

occurrence of lightning, dust attracted to tv screen

The Van de Graaff generator can

create a simulation of lightning

SI unit for electric current

ampere

Volt can be measured using

voltmeter

The flow of electric current can be measured using

ammeter

Unit for measuring resistance is

ohm

The area around the magnet with magnetic force is called

magnetic field

A type of magnet that has a temporary magnetic effect when electric current flows through it

electromagnet

What device is used to detect the existence of electric charges on an object?

electroscope

What is an electromagnet?

a type of magnet that has a temporary magnetic effect when electric current flows through it

What is a magnetic field?

the area around the magnet with magnetic force

What instrument is used to measure the flow of electric current?

ammeter

What instrument is used to measure volt?

voltmeter

Which daily life example of electrostatic involves a television?

dust attracted to tv screen

Which natural daily life phenomenon is cited as an example of electrostatic?

occurrence of lightning