Year 8 Vector End of Term Quiz

How would you describe the term ‘pixel’?

• A. A tiny square of colour in a bitmap image

• B. A symbol that is used to represent an organisation or a product

• C. When an object or image is able to be made bigger or smaller

• D. A detailed image created with pixels

Answer explanation

A pixel is the smallest unit of a digital image, represented as a tiny square of color in a bitmap image. This makes option A the correct choice, as it accurately defines what a pixel is.

Match the following terms with their definitions in vector graphics.

• Union

• A method to fill a shape with color

• Intersection

• A process to form a new path from the common area of two paths

• Stroke

• The outline of a vector object

• Fill

• A technique to merge multiple paths into one

How would you describe a path?

• A. A line or a shape used to create vector graphics

• B. An operation used to combine two or more paths to create a single path

• C. The border of a shape

• D. An operation used to create a single path from the overlapping portion of two paths

Answer explanation

A path is primarily defined as a line or shape used in vector graphics, making option A the correct choice. The other options describe operations related to paths rather than defining what a path is.

Which of these is a characteristic of a vector graphic?

• Limited color palette

• Pixel-based resolution

• Inability to resize without distortion

• Scalability without loss of quality

Answer explanation

Vector graphics are defined by mathematical equations, allowing them to be resized infinitely without losing quality. This scalability is a key characteristic, unlike pixel-based images that distort when resized.

Match the following characteristics with the type of graphic they describe:

• Bitmap image

• Made up of pixels

• Vector graphic

• Loses image quality when scaled

• Raster image

• Maintains image quality when scaled

Answer explanation

• Made up of pixels: This refers to a Bitmap image (or raster image), which is made of pixels.

• Maintains image quality when scaled: This describes a Vector graphic, which can be resized without losing quality.

• Loses image quality when scaled: This applies to a Raster image, which becomes pixelated when resized.

What has been used to place these shapes/paths in their current position?

• Align right sides to page

• Distribute horizontally

• Centre left edges

• Centre vertically

Answer explanation

The correct choice, 'Distribute horizontally', indicates that the shapes/paths have been evenly spaced across the horizontal axis, ensuring they are aligned properly in relation to each other.

What does SVG stand for?

• Standard Vector Graphic

• Scalable Vector Graphic

• Simple Vector Graphic

• Sharable Vector Graphic

Answer explanation

SVG stands for Scalable Vector Graphic, which is a format for vector graphics that can scale to any size without losing quality. This distinguishes it from other options like Standard or Simple Vector Graphic.

Which of these is a characteristic of a bitmap graphic?

• Bitmap graphics are resolution-dependent and composed of pixels.

• Bitmap graphics are vector-based and scalable without loss of quality.

• Bitmap graphics are composed of shapes and lines instead of pixels.

• Bitmap graphics are always black and white, with no color options.

Answer explanation

Bitmap graphics are made up of pixels, making them resolution-dependent. This means that resizing them can lead to a loss of quality, unlike vector graphics which are scalable without losing clarity.

To adjust the nodes of a basic shape (rectangle, ellipse, polygon, star), you must:

• Adjust the stroke

• Duplicate the object

• Add a fill colour

• Convert the object to a path

Answer explanation

To adjust the nodes of basic shapes like rectangles or ellipses, you need to convert the object to a path. This allows for more detailed manipulation of the shape's nodes, unlike just adjusting the stroke or fill.

Each individual item added to a vector image is:

• An object

• A node

• A group

• A shape

Answer explanation

In vector graphics, each individual item, such as shapes or paths, is referred to as an object. This term encompasses all elements that can be manipulated within the vector image, making 'an object' the correct choice.