Cycle 5 Test Practice II

What is the primary function of an electric motor?

• To convert electrical energy into mechanical energy

• To convert mechanical energy into electrical energy

• To store electrical energy

• To increase electrical voltage

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-3

Which of the following best describes an electric force?

• A force that acts between two charged objects

• A force that acts between two magnets

• A force that acts between two neutral objects

• A force that acts only in a vacuum

Tags

NGSS.HS-PS2-4

How does a magnetic field generate electricity?

• By heating up the conductor

• By placing a magnet near a moving conductor

• By cooling down the conductor

• By using a broken magnet

Tags

NGSS.HS-PS2-5

What happens when you double the mass on a spring?

• The spring constant doubles

• The period of oscillation increases

• The spring breaks

• The period of oscillation decreases

What is the effect of using a broken magnet in a magnetic field?

• The magnetic field strength increases

• The magnetic field strength decreases

• The magnetic field becomes uniform

• The magnet repairs itself

What is the consequence of changing the current in the primary coil of a transformer?

• It changes the voltage in the secondary coil

• It changes the resistance in the secondary coil

• It changes the frequency in the secondary coil

• It changes the power in the primary coil

Tags

NGSS.HS-PS2-5

Which of the following is an example of a longitudinal wave?

• Light wave

• Sound wave

• Water wave

• Radio wave

What is the primary characteristic of electromagnetic waves?

• They require a medium to travel

• They can travel through a vacuum

• They are always visible

• They are always audible

How can you calculate the speed of a wave on a string?

• By multiplying the frequency by the wavelength

• By dividing the frequency by the wavelength

• By adding the frequency and the wavelength

• By subtracting the frequency from the wavelength

Tags

NGSS.HS-PS4-1

What happens to the particles in a longitudinal wave when they are closest together?

• They are at the crest

• They are at the trough

• They are at the compression

• They are at the rarefaction