Physical Science Q4 Vocabulary Test

What is the definition of "actual mechanical advantage"?

• The mechanical advantage that accounts for all mechanical losses sustained through using a machine

• The ratio of output force to input force in a machine

• The efficiency of a machine in converting energy

• The speed at which a machine operates

Which type of current involves charge carriers changing direction periodically?

• Direct current

• Alternating current

• Static electricity

• Current electricity

What is biomass energy?

• Energy from the sun

• Chemical potential energy obtained from renewable organic materials

• Energy from wind

• Energy from water

What is the function of a circuit breaker?

• To increase the voltage in a circuit

• To store electrical energy

• To open when there is too much current in a circuit

• To convert AC to DC

What is a compound machine?

• A machine that uses only one simple machine

• A machine that combines two or more simple machines

• A machine that operates without energy

• A machine that is used for chemical reactions

What is the definition of "electric circuit"?

• The movement of electric charge through a complete loop

• The loop through which current electricity can flow

• The field force between two charged objects

• The material through which electric charge moves easily

What is an electromagnet?

• A permanent magnet

• A combination of a strong magnet and an electrified wire coil

• A device that measures electric current

• A material that does not conduct electricity

Tags

NGSS.MS-PS2-3

What is the ability to do work called?

• Power

• Energy

• Force

• Motion

Tags

NGSS.MS-PS3-5

What is the physical property where a material's magnetic domains align with an external magnetic field?

• Conductivity

• Ferromagnetism

• Elasticity

• Plasticity

What is a fuel formed from the remains of plants and animals that lived in the past?

• Biomass

• Fossil fuels

• Nuclear fuel

• Solar energy