Questions About the Facts
RI.3.1
Read the text, then answer the questions.
Turning Milk into Cheese
Cheese begins as an accident that people learned to repeat. Milk is mostly water with fat and protein in it. To make cheese, the protein has to be separated out. A starter culture of bacteria is added first. The bacteria turn some of the milk sugar into acid, and the acid begins to make the protein clump together. Then rennet is added, which finishes the job. The milk splits into solid curds and watery whey. The whey is drained off. The curds are pressed, salted, and left to age. Time does the rest: a cheese aged for two years tastes nothing like the same cheese at two weeks.
- 1. What is milk mostly made of?
- 2. What is added first?
- 3. What are the two parts the milk splits into?
The Salmon's Return
A salmon hatches in a river, swims to the sea, and comes back years later to the river it was born in. It finds its way home by smell. Every river carries its own mixture of soil, rock and plants, and a young salmon learns that smell before it leaves. The return journey is upstream. The fish leap waterfalls, sometimes several metres high, and they do not eat once they enter fresh water. Because it is not feeding, a salmon uses up its own body on the climb. By the time it reaches the gravel where it hatched, it is thin and worn. There it lays its eggs. Most Atlantic salmon die soon afterwards.
- 1. Does a salmon eat on the return journey?
- 2. Where does a salmon hatch?
- 3. How does it find its way home?
LessonPrint · RI.3.1 · Set 14 · free to copy for classroom use