ENERGY Lesson 2 Quiz

What are materials like plastic and glass called?

• Insulators

• Conductors

• Metals

• Semiconductors

If two batteries are connected in series, how does the voltage compare to a single battery?

• The voltage of two batteries in series is the sum of the voltages of the individual batteries.

• The voltage remains the same as one battery.

• The voltage of two batteries in series is half the voltage of one battery.

• The voltage becomes zero.

Which of the following is NOT an insulator?

• Copper

• Plastic

• Glass

• Rubber

What measurement unit is used for electrical current?

• Amperes (A)

• Volts (V)

• Ohms (Ω)

• Watts (W)

How is a switch used in an electrical circuit?

• It opens or closes the circuit, allowing or stopping the flow of current.

• It increases the voltage in the circuit.

• It converts electrical energy into sound energy.

• It acts as a battery holder.

Why do scientists repeat experiments under the same conditions?

• To increase confidence in the results and ensure the claim is reliable

• To use more materials and equipment

• To make their experiments more complex

• To change the variables each time

In a controlled experiment, what is the purpose of the independent variable?

• It is the variable that is changed to observe how it affects the dependent variable.

• It is the variable that remains constant throughout the experiment.

• It is the variable that is not relevant to the experiment.

• It is the variable that is used to control the experiment.

Tags

NGSS.MS-PS2-2

What does the flow of electric charge create in an electric circuit?

• Electric current

• Static electricity

• Electromagnetic waves

• Thermal energy only

What flows in a closed circuit connected to a battery?

• Electric charges

• Heat energy

• Water molecules

• Sound waves

Which of these would be a correct prediction about voltage in series circuits compared to parallel circuits?

• The voltage increases with more batteries in series

• Voltage is the same regardless of the number of batteries

• Voltage decreases with more batteries in parallel

• Parallel and series configurations always give the same voltage