Question

1. geologists know that wherever pressure is built up in a mass of rock along a fault a. earthquakes are not likely b. earthquakes are likely c. the location of the focus d. the location of the epicenter
2. the risk of earthquakes is high along the san andreas fault because a. the pacific and north american plates pull away from each other. b. thats where the pacific and n. american plates meet, creating a subduction zone. c. thats where the pacific and n. american plates slip past each other. d. thats where the pacific sinks under the north american plate.
3. in what order do seismic waves arrive to a seismograph station? a. s waves, p waves, then surface waves b. surface waves, p waves, then s waves c. p waves, s waves, then surface waves d. p waves, surface waves, then s wave
4. most active volcanoes on earth are located in a belt known as the a. the outer rim b. orions belt c. the ring of fire d. the circle of fire
5. which of the following are geohazards associated with earthquakes? i. liquefaction ii. tsunamis iii. aftershocks iv. lahars a. i only b. i, ii, and iii c. i and iv only d. ii and iii only
6. which of the following locations is most likely to experience a lahar? a. the himalayan mountains b. the san andreas fault c. the mid - atlantic ridge d. the andes mountains
7. the difference between lava and magma is that... a. lava is igneous, and magma is not b. magma is on the earth’s surface, and lava is below c. magma is igneous, and lava is not d. lava is on the earth’s surface, and magma is below
8. the three main groups of rock are classified by... a. color b. grain size c. chemical composition d. how they form
9. rocks are made up of... a. vitamins b. minerals c. gems d. fossils
10. a rock formed from liquid magma at temperatures above 1000 degrees celsius and then cooled and hardened. what kind of rock is it? a. igneous b. sedimentary c. metamorphic d. foliated

Explanation:

1. Geologists know pressure - build up along faults can cause earthquakes.
2. The San Andreas Fault is where the Pacific and North American plates slip past each other, increasing earthquake risk.
3. P waves are fastest, then S waves, and surface waves are the slowest to arrive at a seismograph station.
4. Most active volcanoes are in the Ring of Fire.
5. Liquefaction, tsunamis, and aftershocks are earthquake - related geohazards.
6. The Andes Mountains are likely to experience lahars due to volcanic activity.
7. Magma is below the Earth's surface and lava is magma that reaches the surface.
8. Rocks are classified as igneous, sedimentary, and metamorphic based on how they form.
9. Rocks are made up of minerals.
10. A rock formed from liquid magma that cools and hardens is an igneous rock.

Answer:

1. a
2. c
3. c
4. c
5. b
6. d
7. d
8. d
9. b
10. a