Grade 3 Semester 1 Review Quiz

What is a computer?

• A computer is a type of fruit

• A computer is a type of toy

• A computer is a machine that processes information

• A computer is a machine that uses electricity

What are the main parts of a computer system?

• The main parts of a computer system are the central processing unit (CPU), memory, storage, input devices, output devices, and motherboard.

• The main parts of a computer system are the screen, keyboard, and mouse.

• The main parts of a computer system are the software, applications, and internet connection.

• The main parts of a computer system are the printer, scanner, and speakers.

How does a computer process information?

• Using its central processing unit (CPU) and other hardware components

• By asking for permission from the user

• By sending messages to other computers

• By using magic spells

Name three main components of a computer system.

• Mouse, scanner, webcam

• Keyboard, monitor, printer

• Hard drive, motherboard, software

• CPU, memory, input/output devices

What is the function of a keyboard?

• Inputting data into a computer or other devices by pressing keys

• Cooking dinner

• Playing music

• Sending emails

What is the purpose of a monitor?

• To play music

• To display the output of a computer

• To water plants

• To cook food

Name two input devices commonly found on computers.

• headphones and microphone

• speakers and webcam

• keyboard and mouse

• monitor and printer

What is an algorithm?

• A set of step-by-step instructions to solve a problem or perform a task.

• A type of animal

• A type of flower

• A type of food

What is the difference between a variable and a constant in programming?

• A variable is used for text, while a constant is used for numbers

• A variable can change its value, while a constant cannot be changed.

• A variable and a constant are the same thing

• A constant can change its value, while a variable cannot be changed