Compression - losing quality or saving space?
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Does compression shrink file size?
2. Does lossy compression always keep all the original data?
3. Does lossless compression keep all original data?
4. Can too much compression hurt quality?
5. Do smaller compressed files usually load faster?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1Compression | AWrong - shrinking file size is what compression does | |
| 2Lossy compression | BShrinks a file but can lose some quality | |
| 3Keeps all original data while shrinking a file | CCompression | |
| 4Reduces how much storage a file uses | DWrong - lossless compression keeps all original data | |
| 5Lossless compression always loses quality | EReducing file size by removing or simplifying data | |
| 6Compression never shrinks file size | FLossless compression |
C
Definitions
Compression
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
___________ shrinks file size
2.
_____ compression can lose quality
3.
________ compression keeps all data
4.
Compression saves storage _____
5.
Too much compression harms _______
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
Compression grows file size
B
Lossy compression loses data
C
Lossless keeps all data
Question 2
A
Compression shrinks file size
B
Lossless compression loses data
C
Lossy compression loses data
Question 3
A
Compression saves storage space
B
Lossy files may look worse
C
Lossy files always look better
Question 4
A
Compression shrinks file size
B
Lossy compression can lose quality
C
Lossless keeps everything
D
Compression never saves space
Question 5
A
Compression saves storage space
B
Lossy files may lose quality
C
Lossless files keep quality
D
Too much compression helps quality
E
Small files load faster
Answer Key
Compression - losing quality or saving space?
Section A: Quick Questions
Q1
A — Yes
Q2
A — No
Q3
B — Yes
Q4
A — Yes
Q5
B — Yes
Section B: Match the Pairs
Q1
Compression → Reducing file size by removing or simplifying data
Q2
Lossy compression → Shrinks a file but can lose some quality
Q3
Keeps all original data while shrinking a file → Lossless compression
Q4
Reduces how much storage a file uses → Compression
Q5
Lossless compression always loses quality → Wrong - lossless compression keeps all original data
Q6
Compression never shrinks file size → Wrong - shrinking file size is what compression does
Section C: Definitions
Q1
Compression — Reducing file size by removing or simplifying data, sometimes losing quality.Section D: Fill in the Blanks
Q1
Compression shrinks file sizeQ2
Lossy compression can lose qualityQ3
Lossless compression keeps all dataQ4
Compression saves storage spaceQ5
Too much compression harms qualitySection E: Spot the Error
Q1
A — Compression shrinks file size, it doesn't grow it.
Q2
B — Lossless compression keeps all data, it doesn't lose any.
Q3
C — Lossy compression can make quality worse, not better.
Q4
D — Compression is used specifically to save storage space.
Q5
D — Too much compression usually harms quality, not helps it.