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Science Test 10-16
This is the science test study thing
| Question | Answer |
|---|---|
| What is an earthquake? | -The shaking and vibrating of the earth. |
| What causes most earthquakes? | -Large and sudden releases of energy due to the shifting of tectonic plates. |
| What causes energy to be released from the earth? | -The energy is released when movement occurs along large “cracks” in the earth’s outer layer. |
| What is a more uncommon cause of earthquakes? | -About 5% of all earthquakes are related to volcanic activity |
| What is a seismologist? | -A scientist who studies earthquakes. |
| Which way does the P-wave move? | -Push/Pull (vertically) |
| Which way does the S-wave move? | -Side to side(horizontally) |
| Which wave is faster? The P-wave or the S-wave? | -P-waves move faster |
| Why do building collapse during an earthquake? | -Because they are not built on solid ground |
| What is the process in which loose ground becomes liquid? | -Liquefaction |
| What is a seismogram? | - A seismogram is the paper that the vibrations are recorded on. |
| What is a seismograph? | -A seismograph records the vibrations of the earth during an earthquake. |
| Why are dogs used to locate people in earthquakes? | -They have a great sense of smell |
| What is the epicenter? | -The point on the earth’s surface directly above the focus. |
| What is the focus | -The point inside the earth where the earthquake occurs. |
| Why is there more damage done to buildings closer to the epicenter? | -Waves lose strength as they drift away father from the epicenter |
| Why do earthquakes occur in some places more than others? | -They occur where tectonic plates meet |
| What is the Richter Scale? | -A scale used to measure the magnitude of earthquakes. |
| What is the Mercalli Scale? | -A scale used to measure the intensity of an earthquake. |
| What is a tsunami? | -A large wave(s) usually caused by an underwater earthquake. |
| What are the layers of the earth? | -Crust, mantle, and the core. |
| What are the two types of crust? | -Oceanic and continental |
| Which type of crust is thicker? | -The continental crust. |
| Which type of crust is thicker? | -The continental crust. |
| What is crust made up of? | -Rock |
| What is the largest layer? | -The mantle makes up most of the earth. |
| What is the top rigid layer of the mantle called? | -The lithosphere. It is broken up into parts called tectonic plates. |
| What is the hottest part of the earth? | The core |
| What is the core made up of? | -Iron and nickel |
| What happens when two continental plates collide? | -Mountains form |
| What happens when two oceanic plates collide? | -Volcanic mountain ranges form. |
| What happens when plates slide? | -No new landform is created |
| What happens when an oceanic plate and a continental plate collide? | -A volcanic mountain range or an ocean trench |
| What happens when plates separate? | -Mantle comes up to fill the parts with no plate. They start out as ridges. They eventually build up into mountains. Why do plates separate and |
| Why do plates separate and collide? | -Because of convection currents in the mantle below. |
Created by:
Sanika
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