Unit 7 review

Why is natural gas energy efficient?

• most abundant fossil fuel

• cheap

• no environmental impact

• it can be used as is

Which coal type has the least energy content?

• peat

• lignite

• anthracite

• bituminous

Which coal type has the most energy content?

• peat

• lignite

• anthracite

• bituminous

Which resource is made from algae and other marine animals over millions of years?

• coal

• methane

• petroleum

• biomass

Splitting atoms

• fission

• fusion

joining of atoms

• fission

• fusion

Where are the largest natural oil reserves found?

• north america

• countries surrounding persian gulf

• soviet union

• south america

Electric generators work by

• turning oil into electricity

• rubbing a conductor on a substance that does not conduct electricity

• moving metal wires through a magnet

• turning turbines in a dam

what is the function of the control rods in a nuclear reactor?

• causes meltdown

• increases temperature of the reaction

• increases the reaction

• slows the reaction

powerplants are not built today because they are too expensive to generate electricity

• true

• false