Unit 4 Science Review

An electrical circuit is shown in the drawing. What type of circuit is being shown?

• a closed circuit

• an open circuit

• a complicated circuit

• a spark circuit

If the middle bulb burns out in the above circuit, what will happen to bulb 1 and 3?

• nothing- they will remain lit

• bulb 1 will stay lit, but 3 will go out

• bulb 3 will stay lit, but 1 will go out

• both of the bulbs will go out

What kind of circuit is shown?

• a battery circuit

• a series circuit

• a parallel circuit

• a switch circuit

What transformation of energy will happen if the sun shines on the solar panel?

• electrical energy will change to motion

• light energy is changed to electrical energy

• chemical energy is being changed into light energy

• motion is being changed into electrical energy

A generator is .........

• a device that uses magnets to change electrical energy into energy of motion

• a device that uses magnets to change the energy of motion into electrical energy

• a magnet that is made by passing electrical current through a coil of wire wrapped around an iron core

• a safety device used in a circuit

What is the purpose of a fuse?

• A fuse closes a circuit when too much current flows through. A closed circuit won't work.

• A fuse connects all parts of a circuit

• A fuse causes an open circuit when too much current flows through a circuit. An open circuit will no longer allow current to flow

• A fuse allows bulbs to burn longer and brighter

Which part of the food battery is the electrolyte?

• lemon juice

• copper

• zinc

• light bulb

Which part of the circuit shows the energy source?

• the switch

• the battery

• the wires

• the bulb

What type of circuit is shown?

• open

• battery

• series

• parallel

Is glass a conductor or insulator

• Insulator

• Conductor