Physical Science Unit 2 Test

What type of circuit has only one path for current to flow?

• Parallel

• Series

• Closed

• Open

Which material is a good conductor?

• Rubber

• Wood

• Copper

• Plastic

What form of energy powers engines and cooks food?

• Radiant

• Kinetic

• Chemical

• Gravitational

Which source produces the least pollution?

• Coal

• Natural Gas

• Nuclear

• Solar

What does a mechanical advantage of 5 mean?

• The machine multiplies force by 5

• It takes 5 people to operate

• It reduces effort by 5 times

• It increases speed by 5

What is the unit for work?

• Watt

• Newton

• Ohm

• Joule

What law explains that energy cannot be created or destroyed?

• Newton’s Third Law

• Law of Conservation of Energy

• Law of Motion

• Thermodynamics

Which energy transfer method can occur in a vacuum?

• Conduction

• Convection

• Radiation

• Insulation

Which particle has a negative charge?

• Proton

• Neutron

• Electron

• Ion

What causes lightning?

• Radiation buildup

• Heat transfer

• Wind energy

• Static electricity from charge buildup