1A2 GEOGRAPHY MARCH 10TH

Objectives:• Students will review the ways in which

igneous and sedimentary rocks are made.• Students will learn about the formation of

metamorphic rock – marble & quartzite.

HOMEWORK:

Last night’s homework. Let’s look over questions 2 & 3!

HOMEWORK FOR MONDAY’S CLASS

Over the coming week, take note of places around the town where you find examples of the uses of marble.

REVIEW!

Over the past week, we have been learning about the ways in which different kinds of rock are formed.

Now we’ll review what we’ve done so far! Activity.

METAMORPHIC ROCK

Made from rocks that already exist. When igneous and sedimentary rocks are

exposed to great heat and pressure, they can be changed into new, harder rocks.

Rocks formed in this way are called metamorphic rocks.

Examples include marble and quartzite.

MARBLE

This is formed when limestone is put under great heat and pressure.

Marble varies in colour, depending on the location in which it was formed:

Co. Cork. Connemara, Co. Galway. Co. Kilkenny. Co. Antrim (white!)

MARBLE

Marble can be cut, polished and used for many things:

1. Fireplaces.2. Floor tiles.3. Monuments.4. Ornaments.5. Headstones on graves. It is a very hard rock.

QUARTZITE

This is formed when sandstone is exposed to great heat and pressure.

It is extremely hard. Found on:1. Croagh Patrick, Co Mayo.2. Sugarloaf, Co. Wicklow. Used in many objects:1. Road chippings.2. Sand paper.3. Glass.4. Watches.

1A2 GEOGRAPHYMARCH 10TH

Objectives:• Students will review the formation of

metamorphic rocks.• Students will learn about some of the uses

of rock.

HOMEWORK

Don’t forget! For Monday’s class, you must take note of

places around the town where you find examples of the uses of marble.

REVIEW OF THIS MORNING’S CLASS

Metamorphic rocks are formed when… Marble is formed when… Quartzite is formed when…

USES OF ROCK

When we studied Primary Economic Activities, we learned that, when we exploit a resource, we are using it to provide for our own needs.

How to people exploit the rocks that are available to us?

USES OF ROCK

Rocks have many uses. We know that rock is an important building

material. Did you know rocks can also be a source of

energy?

USES OF ROCK: ENERGY

The term ‘fossil fuel’ refers to coal, oil and gas.

These fossil fuels are extracted from the crust in different ways.

COAL

Methods used to extract coal differ according to the depth at which it is found.

Coal is taken from open pits or underground mines.

COAL

Shaft mining is a way of taking coal from deep within the crust.

Vertical wells are drilled first.

Then, corridors are dug out on various levels so coal can be extracted.

Uses of Rock Shaft mining

OIL AND GAS

Extracted from the crust through a process of drilling and pumping.

This can be done on land and at sea.

Offshore, rigs are used to pump oil and gas to the surface. It is then brought ashore.

Example: Kinsale, Co. Cork.

BUILDING MATERIALS

Rocks are also taken from deep in the crust for use in construction.

Quarrying: Large machines are used to cut rock out.

Dynamite: Used to explode rock from the crust.

Limestone, sandstone and marble are examples of rocks extracted from the crust for use in construction.

A DAY IN THE LIFE OFFSHORE

https://www.youtube.com/watch?v=SSicB_xydwA