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WorksheetsDigital Imaging
Total questions: 11
Worksheet time: 6mins
Name
Class
Date
1.
There is a ‘hidden’ image in this grid. It has been encoded using 0s and 1s. What do you call this?
a)
Bit Pattern
b)
Bit Map
c)
Pixel Map
d)
Pixel Pattern
2.
Why is this called a “bit pattern”?
a)
Because
0s and 1s are small numbers
b)
Because
it’s hard to see the pattern
c)
Because
0s and 1s are bits (binary digits)
d)
Because
it’s not much of a pattern
3.
Bitmap images are made up of lots of picture elements Also known as . . .
a)
picels
b)
pixels
c)
picxels
d)
pictels
4.
What happens when you copy small or low quality image from the Internet and try to enlarge it?
a)
They become pixelated
b)
The resolution is increased
c)
They get sharper
d)
They become pixel rated
5.
What is the effect of increasing the resolution of an image?
a)
The image has more white
b)
The image gets bigger
c)
The image quality improves
d)
The image gets smaller
6.
Which image has the highest resolution?
a)
8 x 8 pixels
b)
16 x 16 pixels
c)
32 x 32 pixels
d)
64 x 64 pixels
7.
The iPhone 5S has a resolution of 1136 x 640 at 326ppi. What does ppi stand for?
a)
Pixels
Plus
Inches
b)
Pixels
Per Inch
c)
Pixels
Per Image
d)
Pixels
Plus Image
8.
On which phone will pictures look better?
a)
iPhone
5S
Resolution
=
1136
x 640 at 326ppi
b)
Galaxy
S4
Resolution
=
1920
x 1080 at 441ppi
c)
Lumia
925
Resolution
=
1280
x 768 at 334ppi
9.
On average, computer screens have 1,366 x 768 pixels. How many pixels are used when we display images?
a)
1366
– 768
=
598 pixels
b)
1366
+ 768
=
2134 pixels
c)
1366
÷ 768
=
1.778646 pixels
d)
1366
x 768
=
1,049,088 pixels
10.
Digital cameras use the term ‘Megapixels‘ (MP). The iPhone 6 has an 8MP camera. What does this mean?
a)
Photos taken have 8,000 pixels
b)
Photos taken have 8 huge pixels
c)
Photos taken have 8 million pixels
d)
Photo taken have 8 x 8 pixels
11.
Inside every pixel there are three coloured lights. These light up in varying brightness to create all other colours. Which are the three coloured lights in each pixel?
a)
Red,
Green, Blue
b)
Green, Yellow,
Blue
c)
Red,
Yellow, Blue
d)
Blue,
Orange, Red
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