Answer from the Sources
W.2.8
Read the text, then answer the questions.
Earthquakes
The Earth's crust is not one piece. It is broken into huge slabs called plates, and the plates are always moving — about as fast as your fingernails grow. Where two plates meet, they can catch on each other. Pressure builds up for years while they are stuck. When they finally slip, all that stored energy is released at once. The ground shakes. That shaking is an earthquake. Most earthquakes are too small to feel. A few are strong enough to bring down buildings, which is why new buildings in some places are made to sway.
- 1. What makes the ground shake?
- 2. How fast do the plates move?
- 3. The author says new buildings are made to sway. What reason is given?
- 4. How would a heading over the last paragraph help a reader?
Launching a Lifeboat
When a boat is in trouble, a call goes out to the lifeboat station. Pagers sound. The crew are volunteers, so they stop whatever they are doing and drive to the station. Most arrive within six minutes. They pull on drysuits and lifejackets and climb aboard. The boat slides down a ramp into the sea and the engines start. At sea, the crew look for a flare, a light, or a shape in the water. Once they find the boat, they take the people off first and the boat second. A lifeboat can right itself if a wave rolls it over.
- 1. Why do the crew take the people off first?
- 2. What do the crew take off the boat first?
- 3. How would numbered steps help this text?
- 4. How long do most of the crew take to reach the station?
LessonPrint · W.2.8 · Set 17 · free to copy for classroom use