Which statements describe the richter scale? check all that apply.

1. it gauges fault movement during an earthquake.
2. it measures large earthquakes far from the seismograph.
3. it estimates the total energy released from an earthquake.
4. it increases in magnitude as amount of damage increases.
5. it determines an earthquake’s magnitude based on the size of its seismic waves.

Which of the following describes what rocks usually are composed of ,

Match your vocabulary word to its definition. 1. emigration 2. immigration 3. migration 4. overpopulation 5. sustainable development 6. under population 7. unsustainable development 8. urbanization the movement from one place to another the number of people exceeds the available natural resources in an area leaving one's homeland to settle in a new place the increase in the population of a city the movement of people to a new country the ability to meet current needs without reducing the ability to meet future needs resources being used up at a faster rate than they can be replenished birth rate insufficient to replace the existing population

Which of the following can scientists estimate geologic time? a.observing rock sequences b.radiometric dating c.comparing fossils d.all of these