Volcanic Activity

1. When magma emerges at the surface it is called

Molten rock

Lava

Volcano

Ash

2. This type of cone is formed of alternate layers of lava and ash.

Ash and cinder cone

Composite cone

Lava cone

Viscous lava cone

3. Sometimes it forms the root or core of a mountain. Which intrusive volcanic feature is this?

Sill

Laccolith

Batholith

Dyke

4. If magma emerges from a fissure, it may build up

Volcano

Lava plateau

Sill

Laccolith

5. A fluid lava builds a this type of cone.

Steeply sloping cone

Gently sloping cone

Layered cone

Single cone

6. When a sheet of magma lies along a bedding plane it forms a structure called a

Sill

Laccolith

Batholith

Dyke

7. When a mass of magma cuts across bedding planes, it forms a wall-like feature called a

Sill

Laccolith

Batholith

Dyke

8. Which volcanic cone is formed through this process? Lava is blown to great heights when it is violently ejected, and it breaks into small fragments which fall back to earth and build up a cone.

Composite cone

Shield volcano cone

Lava cone

Ash and cinder cone

9. This volcano 's cone was formed by viscous lava

Mauna Loa

Helgafell

Mont Pelee

Stromboli

10. These are made of granite and they form surface features only after they have been exposed by denudation.

Sill

Laccolith

Batholith

Dyke

11. This feature forms ridge-like escarpments when exposed by erosion.

Sill

Laccolith

Batholith

Dyke

12. The channel through which the lava rises during an eruption is called the

Vent

Pipe

Cone

Crater

Volcanic Activity

1. When magma emerges at the surface it is called

2.

What first name or nickname would you like us to use?

2. This type of cone is formed of alternate layers of lava and ash.

3. Sometimes it forms the root or core of a mountain. Which intrusive volcanic feature is this?

4. If magma emerges from a fissure, it may build up

5. A fluid lava builds a this type of cone.

6. When a sheet of magma lies along a bedding plane it forms a structure called a

7. When a mass of magma cuts across bedding planes, it forms a wall-like feature called a

8. Which volcanic cone is formed through this process? Lava is blown to great heights when it is violently ejected, and it breaks into small fragments which fall back to earth and build up a cone.

9. This volcano 's cone was formed by viscous lava

10. These are made of granite and they form surface features only after they have been exposed by denudation.

11. This feature forms ridge-like escarpments when exposed by erosion.

12. The channel through which the lava rises during an eruption is called the