Restless Earth

Question 0

How are fold mountains formed?

Answer 0

Two tectonic plates collide. The sedimentary rocks fold and buckle and force upwards. Fold. Mountains are formed

Question 1

What plate boundaries can fold mountains be formed?

Answer 1

Destructive plate boundries

Question 2

Give and example of fold mountains formed by a continental and an oceanic plate colliding?

Answer 2

The Andes in south America

Question 3

Give and example of fold mountains being formed by two continental plates colliding?

Answer 3

The Himalayas in Asia

Question 4

What plate boundaries can volcanoes be formed at?

Answer 4

Constructive and destructive.

Question 5

How are volcanoes formed at destructive plate boundaries?

Answer 5

Oceanic plate goes under the continental plate which cause and ocean trench. The oceanic plate moves down into the mantle and is melted and destroyed. A pool of magma is then formed. The magma erupts on to the surface (called lava) and forms a volcano

Question 6

How are volcanoes formed at constructive plate boundaries?

Answer 6

Magma rises up into a crack where the plates are moving apart forming a volcano

Question 7

What are hotspots?

Answer 7

Volcanoes that form ver parts of the mantle tht are really hot

Question 8

What are the the characteristics of composite volcanoes?

Answer 8

Formed by alternation layers of laval and ash. Steep sides. Thick flowing lava which hardens to form the steep sides.

Question 9

What are the characteristics of a shield volcano?

Answer 9

Made up of only lava. The runny laval spreads quickly across a larger surface area to form a flaw low volcano.

Question 10

What are the characteristics of a dome volcano?

Answer 10

Made up of only lava, thick lava, steep sides

Question 11

How do scientists try to predict eruptions?

Answer 11

They look for things such as tiny earthquakes, escaping gas and changes in the shape of the volcano

Question 12

Give and example of a volcano at a destructive plate boundary?

Answer 12

The soufriere hills in Montserrat

Question 13

What are super volcanoes?

Answer 13

Really large volcnoes

Question 14

How are super volcanoes formed?

Answer 14

Magma rises up through the cracks in the crust to form a magma basin below the surface. The pressure causes a circular bulge of the surface several kilometres wide. The bulge can crack creating vents for the lava to escape. This causes earthquakes and also sends up giant plumes of ash and rock.

Question 15

Which plate boundries do earthquakes occur at?

Answer 15

Destructive, constructive, and conservative.

Question 16

How is an earthquake formed at a destructive plate boundary?

Answer 16

Tension builds of when one plate gets stuck as it’s moving down past the mantle

Question 17

How do earth quakes happen at constructive plate boundaries?

Answer 17

Tension builds along cracks within the plates as they move away from each other

Question 18

How do earthquakes happen a conservative plate boundaries?

Answer 18

Tension builds up when plates are moving past each other and get stuck. When the tension is released it causes and earthquake.

Question 19

How can earhtquakes be measured?

Answer 19

Using the mercalli and richter scales.

Question 20

What type of scale is the richter scale?

Answer 20

A logarithmic scale

Question 21

What causes a Tsunami?

Answer 21

Volcanoes and earthquakes at sea.

Question 22

How many deaths were there from the mt st helens eruption?

Answer 22

57

Question 23

How many deaths were there from the mt st helens eruption?

Answer 23

57