Why Paper Has a Grain: teacher key

How Paper Is Made, grade 6 edition, written for 6th grade. Long fibers, A sizes, a ream and a grain: the hidden design inside every sheet.

Read the book. Print this page for the key.

Questions and answers

Why do softwood fibers make stronger paper?
- They are about four times as long as hardwood fibers (answer)
- They are green
- They are wet
What causes the grain in machine-made paper?
- Fibers line up in the direction the paper moves (answer)
- Ink
- Glue
How many sheets are in a ream?
- 100
- 500 (answer)
- 1,000
How big is an A0 sheet?
- One square meter (answer)
- One square foot
- One square mile
What does acid-free mean for paper?
- It is made to last a long time (answer)
- It is very wet
- It is made from rags