SCI_FPS_SECOND TERM_2

A device which is used to break electric circuit is called a ______

• interrupter
• switch
• breaker
• stopper

how many terminals does a cell have?

• Two
• Four
• Five
• Three

True or False: Metals are good conductors of electricity, so current can flow through metals

• False
• True

Can a string be used to make a circuit instead of a metal wire?

• Sometimes
• Maybe
• No
• Yes

What is electricity?

• Electricity is the process of converting sound waves into energy.
• Electricity is the flow of electric charge through a conductor. It is a form of energy

• Electricity is the movement of water through pipes.
• Electricity is the result of chemical reactions in the body.

What chemical reaction occurs between ammonium chloride paste and powdered manganese dioxide?

• Combustion reaction

• Neutralization reaction

• Redox reaction

• Synthesis reaction

What does an electric cell convert chemical energy into?

• Mechanical energy

• Heat energy

• Electrical energy

• Light energy

What components are found in the inner view of a dry cell?

• Ammonium chloride paste, zinc container, manganese dioxide, and carbon

• Sodium chloride paste, aluminum container, iron oxide, and copper

• Potassium chloride paste, lead container, lithium carbonate, and graphite

• Magnesium chloride paste, tin container, cobalt oxide, and silicon

What role does the carbon rod with a metal cap play in the dry cell?

• Negative terminal

• Neutral terminal

• Positive terminal

• Grounding terminal

How can a bulb glow by connecting the metal cap and zinc base with a wire?

• By creating a closed circuit

• By using a battery

• By increasing the resistance

• By reducing the voltage