science

particle

100

what is a particle 

a particle of dust; not a particle of supporting evidence. Physics. one of the extremely small constituents of matter, as an atom or nucleus.

200

what is the state of solid in the from of particle movement 

all together 

300

what is the state of liquid in the from of particle movement

sliding over each other 

400

what is the state of gas in the from of particle movement

expanded 

500

what makes up particles 

atoms are constructed of two types of elementary particle

heat sinks

100

what is a heat sink 

 a device or substance for absorbing excessive or unwanted heat.

200

name two heat sinks 

ocean, pool 

300

how are heat sinks made 

Folded heat sinks are built-up sheet metal, manufactured by folding sheet metal into a serpentine fin array

400

Which material is used in heat sink?

A heat sink is usually made out of aluminium or copper.

500

Which metal is best for heat sink?

Aluminum alloys

conductors/insulator

100

what is a conductor 

a material or device that conducts or transmits heat, electricity, or sound.  

200

what is a insulator 

An insulator stops heat or sound from traveling through.          

300

name two conductors 

gold,copper 

400

name two insulators 

plastic, cotton 

500

is glass a condutor 

Glass, for instance, is a very good insulator at room temperature, but becomes a conductor when heated to a very high temperature.

convection

100

what is convection      

convection is when heat is transferred by movement.        

200

where does covection occur 

Convection occurs on a large scale in atmospheres, oceans, planetary mantles, and it provides the mechanism of heat transfer for a large fraction of the outermost interiors of our sun and all stars.

300

why is covection important to the earth 

This flow, called mantle convection, is an important method of heat transport within the Earth. Mantle convection is the driving mechanism for plate tectonics, which is the process ultimately responsible for producing earthquakes, mountain ranges, and volcanos on Earth.

400

can convection occure in solids

Convection is not possible in solids because for convection to take place the molecules of a substance should be free to move like liquids and gases

500

How does convection relate to plate tectonics?

Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle.

condution

100

what is condution 

the process by which heat or electricity is directly transmitted through a substance when there is a difference of temperature.            

200

Where is conduction used?

Heat transfer takes place from one molecule to another molecule as a result of the vibratory motion of the molecules

300

Which is a good conductor of heat?

Metals like copper and aluminium have the highest thermal conductivity while steel and bronze have the lowest. 

400

is water a condutor 

pure water is an excellent insulator and does not conduct electricity.

500

What are the types of conduction

There are two main types of conduction. They are; Steady-state conduction. Transient conduction.