Geography(planet earth)
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is the equator? | The imaginary line running halfway between the poles
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| How often does the earth rotate on its axis? | Every 24hours
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| At what angle is the earth tilted at? | 23 1/2 degrees
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| How often does the earth orbit the sun? | Every 365 1/4 days
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| How much of the earths surface is covered by water? | 2/3
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| Explain the structure of the earth | Crust, mantle, outer core and inner core
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| What is magma? | The rock in a molten state witch flows around in a slow-moving current
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| What do plates move around in? | Convection currents
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| What are fold mountains? | The outcome of plates in collision. E.g the Rocky Mountains, North America
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| What are volcanoes? | The outcome of plates in separation. E.g Hawaii
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| What are mid-ocean ridges? | The outcome of plates in separation. E.g the Pacific Ring of Fire
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| What is Pangaea? | When all the land on the earth was once a supercontinent
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| Name 3 major plates on the earth | The African plate, the American plate, the Australian plate
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| What are earthquakes? | The result of plates in collision or when plates slide past each other. It is a violent shaking of the earth
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| What is the focus? | The point within the crust where to earthquake occurs
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| What is the epicenter? | The place on the surface found directly above the focus
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| What are aftershocks? | Small tremors after the earthquake
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| What is the Richter scale? | The item used to measure the force of the earthquake
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| What a seismometer? | The instrument that identify's tremors on the crust
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| Give three effects of earthquakes | Loss of life, damage to buildings, gas and electricity damage
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| What are Tsunamis? | Giant tidal waves that are generate as a result of an earthquake occurring on the ocean floor
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| What is an active volcano? | A volcano that erupts regularly, e.g Mount St Helena, USA
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| What is a dormant volcano? | A volcano that hasn't erupted in a long time but may erupt again, e.g Cotopaxi in Peru
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| What is an extinct volcano? | A volcano that hasn't erupted in recorded history, e.g Slemish Mountain ,Ireland
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| List three advantages of volcanoes | Tourism, creation of new land and building material
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Created by:
Chimozukee
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