Science: Electrical System

The diagram below shows a battery.

The parts X and Y are known as the _____________ of the battery respectively.

• north and south poles

• positive and negative terminals

• negative and positive terminals

• up and down end

When electricity passes through a bulb, the bulb produces ______________.

• heat energy only

• light energy only

• heat and light energy

• chemical energy

What is the purpose of having a battery in the electrical circuit?

• It powers the electricity.

• It is an energy source.

• It contains chemicals.

• It has both the positive and negative terminals

Study the circuit diagram below.

Which one of the following will make each bulb in the circuit less bright?

• Removing one bulb from the circuit

• Removing the switch from the circuit

• Adding one bulb in series to the circuit

• Adding one battery in series to the circuit

Minghui set up a circuit as shown.

All five bulbs were lit when all four switches were closed.

He wanted four bulbs to be lit by opening only one switch.

Which switch should he open?

• A

• B

• C

• D

Which of the following objects, when placed in a closed circuit, will cause the bulb to light up?

A: Copper wire  B: Plastic ruler
C: Wooden chopsticks   D: Iron nail

• A and B only
• C and D only
• A and D only 
• B and C only

Tags

NGSS.MS-PS2-3

A battery has 2 ends called __________ and ___________ end.

• up, down

• north, south

• open, close

• positive, negative

Objects that allow electricity to pass through them are called _______________.

• Electrical Conductors

• Electrical Insulators

• Electrical diagrams

• Electrical Symbols

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

Tags

NGSS.MS-ETS1-1

What is a circuit that only has ONE path for electricity to flow?

• series circuit

• closed circuit

• parallel circuit

• light bulb