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Image Representation Lesson 1

Image Representation Lesson 1

Assessment

Presentation

Computers

7th Grade

Medium

Created by

Jacque Mitchard

Used 19+ times

FREE Resource

11 Slides • 18 Questions

1

Data Representation Lesson 1

Slide image

2

Multiple Choice

What base is Denary?

1

2

2

10

3

16

3

Multiple Choice

What base is Binary?

1

2

2

10

3

16

4

5

Multiple Choice

What is a pixel?

1

A tiny square of colour

2

A tiny piece of music

3

A tiny circle of colour

4

A tiny triangle of colour

6

Multiple Choice

(Fill in the blank to complete the sentence) Tiny squares called ..... are the building blocks of all digital images.

1

elements

2

squares

3

pixars

4

pixels

7

Multiple Choice

How many colours can you have with a colour depth of 1?

1

1 colour

2

2 colours - black & white

3

4 colours

4

32 colours

8

Slide image

9

Multiple Choice

When we have a 'one-bit' colour, which are the only two binary numbers that are possibilities?
1
00 and 11
2
000 and 111
3
0 and 1
4
0000 and 1111

10

Slide image

11

Multiple Choice

How many combinations are there for a '2 bit' colour?
1
8
2
4
3
16
4
32

12

Slide image

13

Slide image

14

Multiple Choice

How many bits make up a byte?

1

16

2

4

3

8

4

2

15

Slide image

16

Multiple Choice

Most graphic formats create many colours from:
1
Red, green, blue.
2
Red, pink, yellow.
3
Red, white, blue.
4
Black, white, green.

17

Multiple Choice

Which 'bit' image would give the best picture quality?
1
24
2
4
3
8
4
2

18

Slide image

19

Slide image

20

Slide image

21

Multiple Choice

How do we represent more colours other than black and white in our images?

1

We use more bits per pixel

2

We stop using binary?

3

We just type the colour in that we want

22

Multiple Choice

Denary is numbers humans use in every day life

1

True

2

False

23

Multiple Choice

Quality of an image depends on:

1

Resolution

2

Metadata

3

Screen size

4

Computer's speed

24

Slide image

25

Multiple Choice

A bit is smaller than a byte.

1

True

2

False

26

Multiple Choice

The higher the colour depth, the _________the image file size.
1
Smaller
2
Larger

27

Multiple Choice

The colour of a pixel can be stored as a _______ number
1
Unicode
2
Hex
3
Binary
4
ASCII

28

Multiple Choice

Define the term "Colour Depth"

1

The number of bits used per pixel (BPP).

2

The number of colours used in an image.

3

The number of pixels per inch (PPI).

4

The total number of pixels in an image.

29

Multiple Choice

How many colours can be used for each pixel if the colour depth is 4 bit?

1

4 colours

2

5 colours

3

15 colours

4

16 colours

Data Representation Lesson 1

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