Reread to Understand
RF.3.4
Read the text, then answer the questions.
Why Swallows Leave
Swallows do not leave Britain because of the cold. They leave because of the insects. A swallow eats flying insects, and it catches them in the air. In October the insects disappear, and a bird that eats nothing else has to follow the food. So swallows fly to southern Africa: about six thousand miles, taking roughly six weeks. They travel by day and feed as they go. They lose about a third of their body weight on the way. Many do not arrive. The following spring they return, and a swallow will often nest in the very barn it hatched in.
- 1. What does "migration" mean?
- 2. What does "hatched" mean?
- 3. How long does the journey take?
- 4. How much weight do they lose?
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 added first?
- 2. What is milk mostly made of?
- 3. What does "age" mean when talking about cheese?
- 4. What are the two parts the milk splits into?
LessonPrint · RF.3.4 · Set 13 · free to copy for classroom use