CBSE Class 4 Computer Science GUI Operating System and Desktop Worksheet Set 01

Answer: (a) Graphical User Interface. A Graphical User Interface lets us use pictures, icons and menus to work on a computer.

Teacher's Note:
1. GUI makes a computer easy to use because we click on pictures instead of typing commands.
2. Windows is a common example of a GUI.

Answer: (b) Windows. Windows is an operating system, while Paint is an application and the other two are devices.

Teacher's Note:
1. An operating system controls the computer and runs other programs.
2. Paint is only a drawing program that runs on top of the operating system.

Answer: (c) Desktop. The desktop is the main working area shown after start-up.

Teacher's Note:
1. It holds icons and the taskbar.
2. The Start menu opens only when we click the Start button.

Answer: (a) Icons. Icons are small pictures that represent programs, files and folders.

Teacher's Note:
1. Double-clicking an icon opens the program it stands for.
2. A cursor is the pointer that moves on the screen.

Answer: (b) Recycle Bin. The Recycle Bin stores deleted items until they are removed for good.

Teacher's Note:
1. Because of this, a file deleted by mistake can often be restored.
2. Emptying the Recycle Bin removes the files permanently.

Answer: (c) Taskbar. The taskbar runs along the bottom of the screen and holds the Start button, open programs and the clock.

Teacher's Note:
1. It helps us switch between open programs quickly.
2. The title bar is at the top of a window, not the desktop.

Answer: Start. The Start button opens the Start menu, which lists programs.

Teacher's Note:
1. The Start button is at the left end of the taskbar.
2. Clicking a program name in its menu opens that program.

Answer: GUI (Graphical User Interface). It replaces typed commands with pictures and clicks.

Teacher's Note:
1. Earlier, people had to type difficult commands to use a computer.
2. A GUI removed that difficulty.

Answer: clock (date and time). It shows the current time and date.

Teacher's Note:
1. The right end of the taskbar is called the notification area.
2. It also shows small icons such as volume and network.

Answer: Network (Wi-Fi). It shows the available connections.

Teacher's Note:
1. This icon is found on the right side of the taskbar.
2. It is used to choose a network and connect.

Answer: True. Icons and the taskbar are placed on the desktop.

Teacher's Note:
1. Think of it like the top of a real desk where we keep things we need.
2. Programs and files open on top of the desktop.

Answer: False. Icons are small pictures that stand for programs, files or folders.

Teacher's Note:
1. A window is a rectangular area that opens when we start a program.
2. An icon is only the small picture we click.

Answer: True. Without an operating system the computer hardware cannot be used.

Teacher's Note:
1. The operating system sits between the user and the hardware.
2. It also manages files and programs.

Answer: A GUI (Graphical User Interface) is a way of using a computer with pictures, icons, windows and menus instead of typed commands.

Teacher's Note:
1. We use a mouse to point and click on these pictures.
2. This makes computers easy even for children.

Answer: An operating system is a set of programs that controls the computer and lets us use it. It manages hardware, files and other programs.

Teacher's Note:
1. It starts working as soon as the computer is switched on.
2. All other software needs it to run.

Answer: Windows and Linux (other examples: macOS, Android).

Teacher's Note:
1. Android is used on most mobile phones and tablets.
2. Windows is widely used on desktop computers.

Answer: The Start button opens the Start menu, from which we can open programs, find files, change settings and shut down the computer.

Teacher's Note:
1. It is found at the left end of the taskbar.
2. Clicking it again closes the menu.

Answer: The Recycle Bin stores the files and folders we delete. We can restore them from there or delete them permanently.

Teacher's Note:
1. It acts like a dustbin with a second chance.
2. Deleted items stay there until the bin is emptied.

Answer: Examples: This PC (My Computer), Recycle Bin, Network, Internet browser, Documents, Paint.

Teacher's Note:
1. Each icon opens a different place or program.
2. Icons may differ from one computer to another.

Answer: (a) Windows - operating system (b) Desktop - working area (c) Icons - small pictures (d) Start button - Start menu (e) Recycle Bin - deleted items.

Teacher's Note:
1. Match each word to what it does, one by one.
2. Start with the easy ones such as Recycle Bin.

Answer: 1. DESKTOP (7 letters; the first screen). 2. ICONS (5 letters; small pictures).

Teacher's Note:
1. Count the letters to check each answer.
2. Both words appear in this worksheet.