everything Flashcards
(33 cards)
All the continents?
Europe, Africa, Asia, North America, South America, Antartica, Oceania
All the oceans?
Arctic Ocean, Pacific Ocean, Indian Ocean, Southern Ocean, Atlantic Ocean.
Famous uk mountains?
Ben nevis, Snowdon, Scaffel pike
Famous uk rivers?
River thames, River severn, River trent
Major Uk cities?
London, Manchester, Glasgow, Cardiff, Edinburgh, Liverpool, Leeds, Birmingham, Belfast, Newcastle, Sheffield, Bristol, Southhampton, Leicester
How old is the earth?
4 billion years old (4.543)
What are the different rock types?
Igneous, metamorphic & sedimentary
What is longitude and latitude?
Longitude- top to bottom, east to west
Latitude- left to right, north to south
How was the earth formed?
Dust left over from the creation of the sun clumped together to form what we now know as the earth.
Earth’s layers?
Crust, inner core, outer core, mantle,
Why do tectonic plates move?
They move because of convection currents. They make them move cm’s a year.
Names of tectonic plates?
Eurasian plate, African plate, Indo- Australian Plate, Antarctic Plate, North American plate, South American Plate, Nazca plate, Caribbean plate, Cocos plate, Arabian plate.
Types of crust?
Oceanic crust
Continental crust
What type of crust has low density? How does it help?
The continental crust, it helps because it makes it float on the mantle therefore forming the land that we live on.
Characteristics of the Oceanic Crust?
It is thinner and has higher density than the continental crust and it is much younger. Being less than 200 million years old. It is constantly being destroyed and replaced at plate boundaries. Commonly sinking.
Characteristics of the Continental Crust?
Lighter than the Oceanic Crust, lower density helping it to form land! This is partly why the continents are at a higher elevation from the ocean floor. It’s also older.
What is Earth’s crust. What is it made up of?
The crust is the layer that makes up the Earth’s surface and it lies on top of a harder layer, called the mantle. It is made up of a variety of metamorphic, igneous and sedimentary rock. It is the thinnest of Earth’s layers.
What is Earth’s mantle made up of?
The upper part of the mantle is made mostly of peridotite. A rock with higher density than the rocks in the crust. The mantle is a semi-liquid layer, like jam almost!
What are tectonic plates?
Slabs of rock that are broken off the crust. They are constantly moving and volcanoes and earthquakes are found.
Types of plate boundaries?
Destructive, constructive, conservative and collision.
What is a destructive plate boundary?
When oceanic and continental plates move together, the oceanic plate is forced under the continental plate and then the friction causes the melting of the oceanic plate. This will cause earthquakes and magma rising up to the surface from the cracks. Composite cone volcanoes and BIG earthquakes.
What is a constructive plate boundary?
When plates move apart, volcanoes start to form and magma fills the gaps. A new crust starts to form. Shield volcanoes and earthquakes.
What is a conservative plate boundary?
When the plates slide past each other in different directions or in the same direction at a different
speed. Friction is then overcome and the plates suddenly slip past. Causing violent earthquakes because of the shock waves.
What is a collision zone?
Collision zones form when two continental plates collide. Neither plate is forced under the other, and so both are forced up and form fold mountains.