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WorksheetsBitmaps and Pixels. KS3
Total questions: 10
Worksheet time: 7mins
Computer Bitmap Images are made up of ....
Pixars
cells
pixels
bananas
Which of these are types of computer images ...
xls file
bmp file
tiff file
mp3 file
A computer image has dimensions 200 x 100.
It has (a) pixels in it.
A Single pixel uses only 1 bit to store the colour. It can possibly be ...
black or white only
Any colour
any shade of grey
blue, green, pink or yellow
The colour of a pixel in a computer image can be found by looking at ...
the amount of contrast in it.
the file location on the server machine.
the numbers given for Red, Green, Blue for that pixel.
3 numbers. One for brightness, one for colour, one for hedgehogs.
A computer image file is made up of lots of binary numbers. These numbers are made up of which 2 digits?
1
2
3
0
What do we call it when an image is lower quality and we can see boxes and jagged lines where the pixels are ?
squared
boxellated
pixelled
pixelated
boxed
Which of these programs can create a bitmap (pixel) image file ?
Excel
Word
Paint
Powerpoint
Which of these image files has the highest resolution ?
Picture of Cat 20 x 50 pixels
Picture of dog with 700 pixels in the picture.
Picture of house 90 x 9 pixels
Picture of school. 20 pixels wide. 40 pixels high.
What information does a comp[uter need in order to open an image file ?
Dimensions in pixels (Height, Depth)
Colour Depth : How many bits are used for each pixel (which colours each number represents)
How many white pixels are in the image
The image's auther (Owner)
