ACARA Digital Technologies Years 5–6 Crossword: Networks and Sharing Data and Representing Data with Numbers (Modules 44–57)
Name:
Date:
Class:
✎
Crossword
Read each clue and write the matching term in the grid. Numbers in brackets show the letters in each word.
1
2
3
4
5
6
7
8
9
10
Across
- 3. Something that repeats or mirrors in an image code, like matching rows, a symmetrical picture or a run of the same digit. You can spot it and describe it in words. (7)
- 4. Word 2 of the term in 2 Down: ______ / ______ (6)
- 5. To encode a ______-and-______ picture, write 1 for each ______ pixel and 0 for each ______ pixel. Work row by row, one bit per pixel. Word 4 of: 1 = _____, 0 = _____ (5)
- 6. Word 2 of the term in 5 Across: 1 = _____, 0 = _____ (5)
- 8. Using only two values, like 0 and 1 or on and off. Computers store all data using just these two states. (6)
- 10. Word 1 of the term in 1 Down: _______ ___________ (7)
Down
- 1. A few short sentences that name the devices in a ______, say how they connect, and say what the ______ lets people do, such as share files or a printer. Word 2 of: _______ ___________ (11)
- 2. To ______ is to turn information into a code. To ______ is to turn the code back into the information, using a key. They are opposites. Word 1 of: ______ / ______ (6)
- 7. One wrong digit in an image code changes just one pixel. Decode the code back into a picture to spot the wrong pixel, then fix that digit. Word 3 of: ______ to _____ (5)
- 9. Read a pixel grid in order: start at the top ______, go left to right across it, then move down to the next ______ until the grid ends. Word 1 of: ___ by ___ (3)
Answer Key
ACARA Digital Technologies Years 5–6 · Modules 44–57
1D
2E
3P
A
T
T
E
R
N
S
C
C
O
R
4D
E
C
O
D
E
5W
H
I
T
E
P
6B
L
A
7C
K
T
H
8B
I
N
A
9R
Y
E
O
O
C
10N
E
T
W
O
R
K
Across
3PATTERN — Something that repeats or mirrors in an image code, like matching rows, a symmetrical picture or a run of the same digit. You can spot it and describe it in words.
4DECODE — Word 2 of the term in 2 Down: ______ / ______
5WHITE — To encode a ______-and-______ picture, write 1 for each ______ pixel and 0 for each ______ pixel. Work row by row, one bit per pixel. Word 4 of: 1 = _____, 0 = _____
6BLACK — Word 2 of the term in 5 Across: 1 = _____, 0 = _____
8BINARY — Using only two values, like 0 and 1 or on and off. Computers store all data using just these two states.
10NETWORK — Word 1 of the term in 1 Down: _______ ___________
Down
1DESCRIPTION — A few short sentences that name the devices in a ______, say how they connect, and say what the ______ lets people do, such as share files or a printer. Word 2 of: _______ ___________
2ENCODE — To ______ is to turn information into a code. To ______ is to turn the code back into the information, using a key. They are opposites. Word 1 of: ______ / ______
7CHECK — One wrong digit in an image code changes just one pixel. Decode the code back into a picture to spot the wrong pixel, then fix that digit. Word 3 of: ______ to _____
9ROW — Read a pixel grid in order: start at the top ______, go left to right across it, then move down to the next ______ until the grid ends. Word 1 of: ___ by ___