Sci6 Ch8 Magnetism Vocab

What is RAM used for in a computer?

• To permanently store information that the CPU can change

• To temporarily store information that the CPU can change

• To store the operating system

• To store user files

What is ROM?

• Random-Only Memory

• Read-Only Memory; built-in memory that cannot be changed

• Rewritable Optical Memory

• Rapid Output Memory

What does the CPU stand for, and what is its role?

• Central Processing Unit; it is the brain of a computer

• Central Power Unit; it supplies power to the computer

• Central Programming Unit; it writes software

• Central Peripheral Unit; it connects external devices

How does a semiconductor function?

• It can only work as a conductor

• It can only work as an insulator

• It can work as either a conductor or an insulator

• It can work as a battery

What is an integrated circuit?

• A large circuit with separate components

• A very small circuit with all its components in a single unit

• A circuit that requires manual assembly

• A circuit that only works with analog signals

What is an electronic signal?

• A sound wave that carries information

• An electric current that carries information

• A light beam that carries information

• A magnetic field that carries information

The binary number system is primarily used in electronic devices for what purpose?

• To perform complex calculations

• To communicate the number 0 and the number 1

• To store large amounts of data

• To display images on the screen

How do Maglev trains operate?

• They are propelled by steam engines

• They are propelled by diesel engines

• They are propelled by electromagnets

• They are propelled by solar power

What is the primary function of a generator?

• To convert electrical energy into motion

• To convert motion into electrical energy

• To store electrical energy

• To distribute electrical energy

Which of the following best describes an electromagnet?

• A permanent magnet

• A coil of wire with a core attached to an electrical source

• A magnet that works without electricity

• A magnet that loses its magnetism over time