7th Grade Final - Study Guide

Heat transfer through waves or rays

• conduction

• convection

• radiation

• heat

A boundary between two air masses

• pressure

• air mass

• front

• wind

Phase change from liquid to a solid

• freezing

• melting

• condensation

• sublimation

A model that describes how energy passes from one organism to another

• ecosystem

• food web

• energy

• food chain

A model that describes how energy moves through a community

• food chain

• food web

• energy

• ecosystem

A positively charged particle

• proton

• neutron

• electron

• nucleus

Spinning of Earth on its axis; causes day and night

• reflection

• revolution

• rotation

• axis

Substance that contaminates the environment

• air

• pollution

• gas

• water

Any form of water that falls to Earth

• water cycle

• precipitation

• ice

• hail

Amount of force over an area

• pressure

• barometer

• wind

• air