10 questions🇬🇧English
🌋 Plate Tectonics – Year 8
Geography · Year 8 (KS3) — practise the structure of the Earth, plate boundaries and the causes of earthquakes and volcanoes
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Questions
Which layer of the Earth is the thinnest?
Mantle
Crust
Outer core
Inner core
20s
Which layer of the Earth is made of liquid iron and nickel?
Inner core
Mantle
Outer core
Crust
20s
Why does the Pacific Ring of Fire have so many earthquakes and volcanoes?
It lies directly along the Equator
Sea water heats up the rocks beneath it
It is the deepest part of the world's oceans
It follows the edges of many tectonic plates
20s
What happens to the plates at a constructive plate boundary?
They move towards each other
They move apart from each other
They slide past each other
They stay still and rise upwards
20s
What causes convection currents in the Earth's mantle?
The Moon's gravity pulling on the plates
Heat from the Sun warming the crust
Ocean currents pushing on the plates
Heat from the core warming the mantle rock
30s
At a destructive boundary, why does the oceanic plate sink beneath the continental plate?
The oceanic plate is hotter
The oceanic plate moves faster
The oceanic plate is thicker
The oceanic plate is denser
30s
What is the point on the Earth's surface directly above the focus of an earthquake called?
Epicentre
Magma chamber
Fault line
Crater
20s
What causes earthquakes at a conservative plate boundary?
Plates stick, pressure builds, then they jerk free
One plate melts as it sinks into the mantle
Magma rises and pushes the plates upwards
Plates pull apart and leave a gap in the crust
30s
On the Richter scale, how many times bigger are the seismic waves of a magnitude 6 earthquake than a magnitude 4?
1,000 times
20 times
100 times
2 times
30s
Iceland lies on a constructive boundary. Which two plates are moving apart there?
South American and African
African and Eurasian
North American and Eurasian
Pacific and North American
30s