The Structure of the Earth (Junior Cert Geography): Quizzes
📚Quizzes
Practise the questions
22 questions from this quiz
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Practise the questions
22 questions from this quiz
How many main layers make up the Earth?
How many main layers make up the Earth?
Three
What is the outermost layer of the Earth made of?
What is the outermost layer of the Earth made of?
Solid rock
How thick is the Earth's crust under the oceans?
How thick is the Earth's crust under the oceans?
5-10 km
What is the approximate thickness of the crust under continents?
What is the approximate thickness of the crust under continents?
30-60 km
What is magma?
What is magma?
Very hot, partly molten rock
What temperature can the mantle reach?
What temperature can the mantle reach?
Up to 4,000°C
What do slow movements in the mantle cause?
What do slow movements in the mantle cause?
Earth's plates to move
What natural events do mantle movements lead to?
What natural events do mantle movements lead to?
Earthquakes & volcanoes
What state is the outer core in?
What state is the outer core in?
Molten (liquid)
Which metals mainly make up the outer core?
Which metals mainly make up the outer core?
Iron & nickel
Why is the inner core solid despite extreme heat?
Why is the inner core solid despite extreme heat?
Pressure forces metals to stay solid
What is the temperature of the inner core?
What is the temperature of the inner core?
Over 5,000°C
How many main layers make up the Earth's structure?
How many main layers make up the Earth's structure?
Three
What is the outermost layer of the Earth made of?
What is the outermost layer of the Earth made of?
Solid rock
How thick is the crust under the oceans?
How thick is the crust under the oceans?
5-10 km
How thick is the crust under the continents?
How thick is the crust under the continents?
30-60 km
What is the maximum temperature that the mantle can reach?
What is the maximum temperature that the mantle can reach?
4,000°C
What do slow movements in the mantle cause?
What do slow movements in the mantle cause?
Tectonic plates to move
What metals mainly make up the outer core?
What metals mainly make up the outer core?
Iron and nickel
What is the state of the outer core?
What is the state of the outer core?
Molten (liquid)
Why is the inner core solid despite extreme heat?
Why is the inner core solid despite extreme heat?
Pressure forces metals to stay solid
What is the temperature of the inner core?
What is the temperature of the inner core?
Over 5,000°C